Tootfinder

The Effects of Linear Matter Power Spectrum Enhancement on Dark Matter Substructure
Ethan O. Nadler, Vera Gluscevic, Andrew Benson
https://arxiv.org/abs/2507.16889 https://

The Effects of Linear Matter Power Spectrum Enhancement on Dark Matter Substructure
We present cosmological dark matter (DM)--only zoom-in simulations of a Milky Way (MW) analog originating from enhanced linear matter power spectra $P(k)$ relative to the standard cold, collisionless DM (CDM) cosmology. We consider a Gaussian power excess in $P(k)$ followed by a cutoff in select cases; this behavior could arise from early-universe physics that alters the primordial matter power spectrum or DM physics in the radiation-dominated epoch. We find that enhanced initial conditions (IC…

Probing superheavy dark matter with exoplanets: #DarkMatter in gas giants could collapse into detectable black holes: https://news.ucr.edu/articles/2025/08/21/using-exoplanets-study-dark-matter

Kinematic Imprints of vortex-lines of BEC Dark Matter on Baryonic Matter
Iv\'an \'Alvarez-Rios, Carlos Tena-Contreras, Francisco S. Guzm\'an
https://arxiv.org/abs/2506.17535

Kinematic Imprints of vortex-lines of BEC Dark Matter on Baryonic Matter
Our results demonstrate that vortex lines in Bose-Einstein Condensate Dark Matter (BECDM) can act as gravitational seeds that induce the condensation of baryonic matter, leading to localized gas accumulation even in the absence of imposed symmetries or rotation. Our analysis is based on the numerical solution of the system of equations for the BECDM gravitationally coupled to Euler equations for a compressible ideal gas (IG) that we use as a model of baryonic matter. Numerical simulations are c…

$g$-mode oscillations of dark matter admixed neutron stars
Swarnim Shirke, Debarati Chatterjee, Prashanth Jaikumar
https://arxiv.org/abs/2506.18892 https:/…

$g$-mode oscillations of dark matter admixed neutron stars
We investigate $g$-mode oscillations in dark matter admixed neutron stars employing a relativistic mean field model to describe hadronic matter and a model for self-interacting fermionic dark matter motivated by the neutron decay anomaly. Following the construction of such admixed configurations, we derive the equilibrium and adiabatic speeds of sound therein, leading to a computation of the star's $g$-mode spectrum in the Cowling approximation. In particular, we explore the effect of dark matt…

Search for dark-matter axions beyond the quantum limit: the Cosmological Axion Sarov Haloscope (CASH) proposal
Andrey L. Pankratov, Pavel A. Belov, Eduard E. Boos, Alexander S. Chepurnov, Alexander V. Chiginev, Alexander V. Derbin, Ilia S. Drachnev, Lev V. Dudko, Dmitry S. Gorbunov, Maxim A. Gorlach, Vadim V. Ivanov, Leonid V. Kravchuk, Maxim V. Libanov, Michael M. Merkin, Valentina N. Muratova, Alexander E. Pukhov, Dmitry V. Salnikov, Petr S. Satunin, Dmitrii A. Semenov, Alexander M. …

Search for dark-matter axions beyond the quantum limit: the Cosmological Axion Sarov Haloscope (CASH) proposal
Firmly established in astrophysical observations, dark matter evades direct detection in experiments. Axions and axion-like particles are among the leading dark-matter candidates, and numerous attempts to detect them in laboratories have been performed. Here, we propose to advance these efforts substantially, extending the sensitivity for dark-matter axions in the mass range $(38-54)~μ$eV down to the axion-photon couplings $g_{aγγ}\lesssim \left(10^{-14}-10^{-15}\right)$ GeV$^{-1}$, motivate…

Dark matter signatures in cosmic rays
M. Maroudas, A. Argiriou, G. Cantatore, E. Georgiopoulou, M. Karuza, A. Kryemadhi, I. Lazanu, A. Mastronikolis, M. Parvu, Y. K. Semertzidis, I. Tsagris, M. Tsagri, G. Tsiledakis, K. Zioutas
https://arxiv.org/abs/2506.17676

Dark matter signatures in cosmic rays
This study analyzes an 11-year cosmic ray dataset of positrons and antiprotons for planetary dependencies related to gravitationally focused dark matter streams. By projecting event timestamps onto planetary heliocentric longitudes, structured flux modulations are found. The results resemble previously reported planetary relationships in solar and terrestrial observables. This supports the possibility that streaming dark matter particles are focused toward Earth by solar system bodies, includin…

No matter what Trump says, the US has gone to war – and there will be profound and lasting consequences | Simon Tisdall | The Guardian https://www.theguardian.com/commentisfree/2025/jun/22/donald-trump-usa-iran-israel-war-bombing…

A new Limit for Axion Dark Matter with SPACE
M. A. Akg\"um\"us, N. Salama, J. Egge, E. Garutti, M. Maroudas, L. H. Nguyen, D. Leppla-Weber
https://arxiv.org/abs/2506.18411

A new Limit for Axion Dark Matter with SPACE
The axion, which has yet to be discovered, is a promising candidate for dark matter that emerges from Peccei-Quinn theory. This article presents the search for axion dark matter with the "Student Project for an Axion Cavity Experiment" (SPACE), which is also the first one in Germany. The hypothetical particle was looked for in the mass range from $16.626~\mathrm{μeV}$ to $16.653~\mathrm{μeV}$, corresponding to a frequency range of 4.020 GHz to 4.027 GHz, using a resonant cavity in a peak magn…

Implicit neural representations for accurate estimation of the standard model of white matter
Tom Hendriks, Gerrit Arends, Edwin Versteeg, Anna Vilanova, Maxime Chamberland, Chantal M. W. Tax
https://arxiv.org/abs/2506.15762

Implicit neural representations for accurate estimation of the standard model of white matter
Diffusion magnetic resonance imaging (dMRI) enables non-invasive investigation of tissue microstructure. The Standard Model (SM) of white matter aims to disentangle dMRI signal contributions from intra- and extra-axonal water compartments. However, due to the model its high-dimensional nature, extensive acquisition protocols with multiple b-values and diffusion tensor shapes are typically required to mitigate parameter degeneracies. Even then, accurate estimation remains challenging due to nois…

'The Models Were Right!' Astronomers Locate Universe's 'Missing' Matter - Slashdot
https://science.slashdot.org/story/25/06/21/064247/the-models-were-right-astronomers-locate-universes-missing-matter

The nanoscale molecular chemistry of outer solar system organic matter in asteroid Ryugu
Christian Vollmer, Demie Kepaptsoglou, Johannes Lier, Aleksander B. Mosberg, Quentin M. Ramasse
https://arxiv.org/abs/2506.16798

The nanoscale molecular chemistry of outer solar system organic matter in asteroid Ryugu
The analysis of biorelevant molecules in returned mission samples such as from the carbonaceous asteroid (162173) Ryugu is key to unravelling the role of extraterrestrial organics in the evolution of life. Coordinated analyses using minimally destructive techniques at the finest length-scales on pristine samples are particularly important. Here, we identify the chemical signature of unique globular and nitrogen-containing diffuse organic matter in asteroid Ryugu and map the distribution of thes…

Observational constraints on phenomenological emergent dark energy and barotropic dark matter characterized by a constant equation of state parameter
Jian-Qi Liu, Yan-Hong Yao, Yan Su, Jia-Wei Wu
https://arxiv.org/abs/2507.16147

Observational constraints on phenomenological emergent dark energy and barotropic dark matter characterized by a constant equation of state parameter
While cold dark matter is widely supported by a range of cosmological observations, it encounters several difficulties at smaller scales. These issues have prompted the investigation of various alternative dark matter candidates, leaving the question "What is dark matter?" still open. In this work, we propose a new cosmological model that considers dark matter as a barotropic fluid with a constant equation of state parameter and interprets dark energy as the phenomenological emergent dark energ…

Sources: Meta plans to launch its first glasses with a display and a wristband that lets users control the glasses with hand gestures, at Connect in September (CNBC)
https://www.cnbc.com/2025/08/22/meta-hypernova-ar-glasses-wristband.html

Meta set to unveil first consumer-ready smart glasses with a display, wristband next month
Meta's glasses are codenamed Hypernova and will include a small display in the right lens of the device, people familiar with the matter told CNBC.

Constraints on Axion Dark Matter by Spin-Dependent Macroscopic Force
Dongyi Yang, Chenxi Sun, Jianwei Zhang
https://arxiv.org/abs/2507.17148 https://

Constraints on Axion Dark Matter by Spin-Dependent Macroscopic Force
Axion-like particles (ALPs) are hypothetical particles that serve as promising candidates for cold dark matter. Portals like inelastic axion scattering and axion propagated force have been employed to search for the upper limit of the ALPs' coupling with standard model particles. Other methods, like the axion-fermion interaction in the CASPEr experiment, integrate the dark matter motion into the measurement. We suggest a new method for detecting dark matter axions based on axionelectron elastic…

From Few to Many Emitters Cavity QED: Energy Levels and Emission Spectra From Weak to Deep-Strong Coupling
Andrea Zappal\'a, Alberto Mercurio, Daniele Lamberto, Samuel Napoli, Omar Di Stefano, Salvatore Savasta
https://arxiv.org/abs/2506.18763

From Few to Many Emitters Cavity QED: Energy Levels and Emission Spectra From Weak to Deep-Strong Coupling
We present a systematic study of the properties of systems composed of $N$ two-level quantum emitters coupled to a single cavity mode, for light-matter interaction strengths ranging from the weak to the ultrastrong and deep-strong coupling regimes. Beginning with an analysis of the energy spectrum as a function of the light-matter coupling strength, we examine systems with varying numbers of emitters, from a pair to large collections, approaching the thermodynamic limit ($N \to \infty$). Additi…

Dancing in the dark: probing Dark Matter through the dynamics of eccentric binary pulsars
Giorgio Nicolini, Andrea Maselli, Miguel Zilh\~ao
https://arxiv.org/abs/2507.16904 http…

Dancing in the dark: probing Dark Matter through the dynamics of eccentric binary pulsars
We investigate the dynamics of eccentric binary pulsars embedded in dark matter environments. While previous studies have primarily focused on circular orbits in collisionless dark matter halos, we extend this framework to eccentric systems and explore their interaction with ultralight scalar fields. Adopting a perturbative approach, we compute the modifications to the orbital period induced by dark matter-driven dynamical friction. Our results show that orbital eccentricity amplifies the impri…

A general model for frictional contacts in colloidal systems
Kay Hofmann, Kay-Robert Dormann, Benno Liebchen, Friederike Schmid
https://arxiv.org/abs/2507.16388

A general model for frictional contacts in colloidal systems
In simulations of colloidal matter, frictional contacts between particles are often neglected. For spherical colloids, such an approximation can be problematic, since frictional contacts couple translational and rotational degrees of freedom, which may affect the collective behavior of, e.g., colloids under shear and chiral active matter. Deterministic models for frictional contacts have been proposed in the granular matter community. On the colloidal scale, however, thermal fluctuations are im…

Nuclear and neutron matter in the relativistic Brueckner-Hartree-Fock theory with next-to-leading order covariant chiral nuclear force
Wei-Jiang Zou, Yi-Long Yang, Jun-Xu Lu, Peng-Wei Zhao, Li-Sheng Geng, Jie Meng
https://arxiv.org/abs/2506.18519

Nuclear and neutron matter in the relativistic Brueckner-Hartree-Fock theory with next-to-leading order covariant chiral nuclear force
The symmetric nuclear matter and pure neutron matter are investigated by the relativistic Brueckner-Hartree-Fock (RBHF) theory with the covariant chiral nuclear forces up to the next-to-leading order~(NLO). A fitting scheme to ensure the naturalness of the low-energy constants is proposed, which plays a crucial role in the proper description of nuclear matter. With a momentum cutoff $Λ=590$ MeV, the empirical saturation energy and density, as well as the incompressibility coefficient at the sa…

Another essential thread from @… ...
https://mamot.fr/@pluralistic/114733317506784669
pluralistic@mamot.fr - A major problem with letting billionaires decide how your country is run is that they will back whichever psycho promises the lowest taxes and least regulation, no matter how completely batshit and unfit that person is:
https://www.hamiltonnolan.com/p/nations-are-people
--
If you'd like an essay-formatted version of this thread to read or share, here's a link to it on pluralistic.net, my surveillance-free, ad-free, tracker-free blog:
https://pluralistic.net/2025/06/23/billionaires-eh/#galen-weston-is-a-rat
1/

No matter what Trump says, the US has gone to war - and there will be profound and lasting consequences (Simon Tisdall/The Guardian)
https://www.theguardian.com/commentisfree/2025/jun/22/donald-trump-usa-iran-israel-war-bombing
http://www.memeorandum.com/250622/p70#a250622p70

Sometimes when I put pills and water in my mouth, I forget how to swallow without chewing
I can swallow water just fine, and I can chew and swallow food just fine, but even though I take pills every day, often I stall with my mouth full of water, whether it's one pill or multiple, and no matter how much water

The latest extraordinary intervention by the White House in corporate America.
Trump said on Friday the U.S. would take a 10% stake in Intel
under a deal with the struggling chipmaker
-- and is planning more such moves,
An official announcement on the arrangement is expected later in the day, a source familiar with the matter said. Trump is set to meet with CEO Lip-Bu Tan later on Friday

Distinguishing dual lattice by strong-pulse matter-wave diffraction
Fangde Liu, Wei Han, Yunda Li, Feifan Zhao, Liangchao Chen, Lianghui Huang, Pengjun Wang, Zengming Meng, Jing Zhang
https://arxiv.org/abs/2507.16592

Distinguishing dual lattice by strong-pulse matter-wave diffraction
Dual lattices such as honeycomb and hexagonal lattices typically obey Babinet's principle in optics, which states that the expected interference patterns of two complementary diffracting objects are identical and indistinguishable, except for their overall intensity. Here, we study Kapitza--Dirac diffraction of Bose--Einstein condensates in optical lattices and find that matter waves in dual lattices obey Babinet's principle only under the condition of weak-pulse Raman--Nath regimes. In contras…

Positive Neutrino Masses with DESI DR2 via Matter Conversion to Dark Energy: #DarkEnergy offers a cure to hiccups in our understanding of the universe, including the mass of ghost-like particles called neutrinos.

an all too brief snippet of the recent robyn hitchcock/gillian welch/dave rawlings set at the winnipeg #folk festival, including the #GratefulDead's "candyman." they apparently did "wharf rat," too, a debut no matter which one of them sang it.

Three-dimensional equation of state extension of quark matter in Fermi-liquid theory
Zhenyu Zhu, Shuai Zha, Sophia Han
https://arxiv.org/abs/2506.17569 htt…

Three-dimensional equation of state extension of quark matter in Fermi-liquid theory
The cold, dense matter equation of state (EoS) determines crucial global properties of neutron stars (NSs), including the mass, radius and tidal deformability. However, a one-dimensional (1D), cold, and $β$-equilibrated EoS is insufficient to fully describe the interactions or capture the dynamical processes of dense matter as realized in binary neutron star (BNS) mergers or core-collapse supernovae (CCSNe), where thermal and out-of-equilibrium effects play important roles. We develop a method…

Over on BlueSky, @… (author of “Ludicrous”, a history of Tesla Motors) is live streaming the California DMVs cases against Tesla Motors for deceptive advertising regarding their “Self Driving” capabilities.
It’s an interesting read.
Day 1:

https://eci.ec.europa.eu/045/public/#/screen/home
We managed to bring the conversion therapy ban over the finish line.
This is nowhere a life-or-death matter as that one, of course, but there are many, many gamers who would definitely support this if they saw it. And it sh…

Polar solitons in a nonpolar chiral soft matter system
Jiahao Chen, Xingzhou Tang, Yang Ding, Susanta Chakraborty, Satoshi Aya, Bingxiang Li, Yanqing Lu
https://arxiv.org/abs/2506.16778

Polar solitons in a nonpolar chiral soft matter system
Polar solitons, i.e., solitonic waves accompanying asymmetry of geometry or phase, have garnered attention in polar systems, such as ferroelectric or magnetoelectric materials, where they play a critical role in topological transitions and nonreciprocal responses to external fields. A key question is whether such polar solitons can emerge in nonpolar systems, where intrinsic polarity is absent. Here, we demonstrate an unprecedented polar soliton with nematic order in a nonpolar and chiral liqui…

Tracing Dark Matter in the Central Regions of Galaxy Clusters Using Galaxies, Gas, and Intracluster Light in TNG300: Connections to Cluster Dynamical State
Jaewon Yoo, Jihye Shin, Ho Seong Hwang, Cristiano G. Sabiu, Hyowon Kim, Jongwan Ko, Jong Chul Lee
https://arxiv.org/abs/2506.16280

Tracing Dark Matter in the Central Regions of Galaxy Clusters Using Galaxies, Gas, and Intracluster Light in TNG300: Connections to Cluster Dynamical State
Recent studies have highlighted the potential of intracluster light (ICL) as a dark matter tracer. Moreover, the ICL co-evolves with the brightest cluster galaxy (BCG) and the host cluster, making it a valuable tool for understanding cluster dynamics. In this study, we utilize 426 galaxy clusters (with total mass $M_{\rm tot}>10^{14} M_{\odot}$ at $z=0$) simulated in the cosmological hydrodynamical simulation Illustris TNG300 to compare the spatial distributions of dark matter, member galaxies,…

Say it with me: LLM's offer next likely token prediction.
If you want to predict likely tokens (E.g., predictive keyboard typing), great!
If you want ANYTHING OTHER THAN NEXT LIKELY TOKEN PREDICTION you don't want an LLM.
No, not even if you add RAG.
No, not even if it's "agentic".
If you want certainty, if you want rule adherence, if you want comprehension of any kind, you don't want an LLM. No matter what OpenAI tells you.

pro tip: add this to your .bashrc (or similar shell setup script) on hosts that matter:
alias reboot='echo "really? use systemctl reboot instead"'
Prevented me from rebooting the main server instead of the VM I actually wanted to reboot :)

Indiana fans are going to learn what Warriors fans sadly learned the last few years: you can't win if you keep conceding turnovers, no matter how good you are. Eventually you run out of time.

#ScribesAndMakers 22
Show us something you've created. Tell us the story behind it.
https://cs.wellesley.edu/~pmwh/labyrinfinite/
I was thinking on a dog walk about how most games with procedurally generated content like Minecraft get pretty repetitive at some point if you zoom out far enough, and large-scale structures that have structural constraints like rivers are very hard to generate piecemeal. So I wanted to come up with an algorithm that could generate globally-consistent structures piece-by-piece, with consistency even if pieces were generated out-of-order, while maintaining only a fixed amount of context no matter how far from the origin you went. This demo is *almost* that, except the amount of context scales logarithmically with the distance-from-origin, which I find a very acceptable compromise. In the demo, there's a single infinitely-long path that eventually touches every cell of the infinite 2D grid (okay, computer limitations mean it's not really infinite, but mathematically it could be). You can get different path structures from different random seeds, although the generation trick does constrain things a lot relative to the set of all possible such paths (notice that in each 5x5 region it touches every cell before leaving; that's not in general necessary).

Last night I had a dream about when I was at Ozzfest ‘99 in Somerset, WI. #ozzyosbourne was a marvelous and unique performer until the very end. Legends never die 👊
Also, I have never, and will never ever again see so many toppless women (and men for that matter) in one place at a time in my life again 😆

Ikea möbelt Smart Home mit mehr Matter-Technik auf: Über 20 neue Geräte geplant
Ikea will das Smart-Home-Sortiment massiv ausbauen, von ZigBee zu Thread wechseln und via Matter-Standard auch andere Markengeräte steuern.

#running slow is hard but my fitness is such that it requires a rebuild of the foundation. Trying to stay in HR2 means a decent amount of walking interspersed. I don’t love it, but it’s necessary.
I have a much more open schedule now, so I should be able to get out and run regularly. The trick will be staying patient and trusting the process.

Minimal Dark Matter in the sky: updated Indirect Detection probes
Mohammad Aghaie, Alessandro Dondarini, Giulio Marino, Paolo Panci
https://arxiv.org/abs/2507.17607

Minimal Dark Matter in the sky: updated Indirect Detection probes
Minimal Dark Matter is among the simplest and most predictive Dark Matter frameworks, with the Majorana SU(2) 5-plet as its smallest accidentally stable real representation. We present a comprehensive reassessment of its indirect-detection signals. The $γ$-ray flux from both Sommerfeld-enhanced annihilations and bound-state formation is calculated, incorporating next-to-leading-order corrections and next-to-leading-log resummation of the relevant electroweak effects. In the Milky Way halo, bou…

Influence of dark matter on quantum entanglement and coherence in curved spacetime
Shu-Min Wu, Yu-Xuan Wang, Si-Han Shang, Wentao Liu
https://arxiv.org/abs/2507.16142

Influence of dark matter on quantum entanglement and coherence in curved spacetime
Dark matter (DM) remains undetected, and developing theoretical models such as the promising perfect fluid dark matter (PFDM) is a key challenge in modern cosmology. In this work, we investigate the quantum characteristics of PFDM by analyzing the behavior of quantum entanglement and coherence for both fermionic and bosonic fields near a Schwarzschild black hole embedded in a PFDM halo. Our results reveal that PFDM can either enhance or degrade quantum entanglement and coherence, depending sens…

Electric field control of superconducting fluctuations and quasiparticle interference at oxide interfaces
Graham Kimbell (Department of Quantum Matter Physics, University of Geneva, Geneva, Switzerland), Ulderico Filippozzi (Kavli Institute of Nanoscience, Delft University of Technology, Delft, Netherlands), Stefano Gariglio (Department of Quantum Matter Physics, University of Geneva, Geneva, Switzerland), Marc Gabay (Laboratoire de Physique des Solides, Universite Paris Saclay, CNRS U…

Electric field control of superconducting fluctuations and quasiparticle interference at oxide interfaces
We investigate tunable superconducting transitions in (111)$\mathrm{LaAlO}_3/\mathrm{KTaO}_3$ field-effect devices. Large increases in conductivity, associated with superconducting fluctuations, are observed far above the transition temperature. However, the standard Aslamazov-Larkin paraconductivity model significantly underestimates the effect observed here. We use a model that includes conductivity corrections from normal state quasiparticle interference together with all contributions from …

Quantifying Gibbs measures of disordered crystals up to the solid-liquid phase transition
Vladislav Efremkin, Julian Heske, Thomas D. K\"uhne, Emil Prodan
https://arxiv.org/abs/2506.18190

Quantifying Gibbs measures of disordered crystals up to the solid-liquid phase transition
Quantifying the configuration space and the Gibbs measure of thermally disordered condensed matter systems has been a long standing problem. The challenge is to avoid the Gibbs paradox, which forbids any ordering or labeling of the atoms. Our key observation is that the lattice of a thermally disordered condensed matter system, in either solid, liquid or gas phase, can be fully reconstructed from the Voronoi cells of the atoms alone, even if these Voronoi cells are disassembled and randomly scr…

Logo singularity is real. No matter how complex your logo starts off, it will inevitably be homogenized into a single colored dot.
Cracker Barrel's logo has just breached the event horizon and quickly descends down the wormhole.

Does Language Matter for Early Detection of Parkinson's Disease from Speech?
Peter Plantinga, Briac Cordelle, Dominique Lou\"er, Mirco Ravanelli, Denise Klein
https://arxiv.org/abs/2507.16832 …

Does Language Matter for Early Detection of Parkinson's Disease from Speech?
Using speech samples as a biomarker is a promising avenue for detecting and monitoring the progression of Parkinson's disease (PD), but there is considerable disagreement in the literature about how best to collect and analyze such data. Early research in detecting PD from speech used a sustained vowel phonation (SVP) task, while some recent research has explored recordings of more cognitively demanding tasks. To assess the role of language in PD detection, we tested pretrained models with vary…

Gray matter abnormalities in sight deprivation and sight restoration https://link.springer.com/article/10.1007/s00429-025-02994-6 "white matter may potentially serve as a biomarker of structural plasticity following sight restoration"; brain plasticity

Gray matter abnormalities in sight deprivation and sight restoration - Brain Structure and Function
Blindness provides a unique model for investigating brain plasticity in response to sensory deprivation. While structural changes in both gray and white matter have been widely documented, particularly in cases of early or congenital visual deprivation, gray matter studies have traditionally focused on cortical thickness, often finding cortical thickening in posterior regions. However, other aspects of gray matter integrity, such as cortical myelin content, remain underexplored. In this study, …

Alpha clustering in warm and dense nuclear matter from heavy-ion collisions
Rui Wang, Zhen Zhang, Yu-Gang Ma, Lie-Wen Chen, Che Ming Ko, Kai-Jia Sun
https://arxiv.org/abs/2507.16613

Alpha clustering in warm and dense nuclear matter from heavy-ion collisions
Although light nuclear clusters are known to affect the properties of warm and dilute nuclear matter, their role in warm and dense nuclear matter remains unclear due to the lack of experimental evidence for their modifications by the Mott effect in such an environment. To address this issue, we resort to intermediate-energy heavy-ion collisions, where light clusters are mainly produced in the transiently formed warm and dense matter. A kinetic approach, which includes dynamically the formation …

It does not matter if Trump is a fool¹ as long as he is a tool².
__
¹but it may help the latter
²for Project 2025 and others
#pol #uspol

Neutralization of Levitated Charged Nanodiamond: Towards matter-wave interferometry with massive objects
Sela Liran, Or Dobkowski, Rafael Benjaminov, Peter Skakunenko, Michael Averbukh, Yaniv Bar-Haim, David Groswasser, Joshua H. Baraban, Ron Folman
https://arxiv.org/abs/2508.15625

Neutralization of Levitated Charged Nanodiamond: Towards matter-wave interferometry with massive objects
Quantum mechanics (QM) and General relativity (GR), also known as the theory of gravity, are the two pillars of modern physics. A matter-wave interferometer with a massive particle, can test numerous fundamental ideas, including the spatial superposition principle - a foundational concept in QM - in completely new regimes, as well as the interface between QM and GR, e.g., testing the quantization of gravity. Consequently, there exists an intensive effort to realize such an interferometer. While…

Cosmology with a Non-minimally Coupled Dark Matter Fluid I. Background Evolution
Samuele Silveravalle, Andrea Lapi, Francesco Benetti, Stefano Liberati
https://arxiv.org/abs/2507.16614

Cosmology with a Non-minimally Coupled Dark Matter Fluid I. Background Evolution
We explore a cosmological model in which dark matter is non-minimally coupled to gravity at the fluid level. While typically subdominant compared to Standard Model forces, such couplings may dominate dark matter dynamics. We show that this interaction modifies the early-time Friedmann equations, driving a phase of accelerated expansion that can resolve the horizon and flatness problems without introducing additional fields. At even earlier times, the coupling to spatial curvature may give rise …

Trump gripes he won't get Nobel Peace Prize 'no matter what' as global conflicts persist (Miriam Waldvogel/The Hill)
https://thehill.com/homenews/5361632-trump-gripes-he-wont-get-nobel-peace-prize-no-matter-what-as-global-conflicts-persist/
http://www.memeorandum.com/250620/p115#a250620p115

Self-Interacting Dark-Matter Spikes and the Final-Parsec Problem: Bayesian constraints from the NANOGrav 15-Year Gravitational-Wave Background
Shreyas Tiruvaskar, Chris Gordon
https://arxiv.org/abs/2506.18153

Self-Interacting Dark-Matter Spikes and the Final-Parsec Problem: Bayesian constraints from the NANOGrav 15-Year Gravitational-Wave Background
A self-interacting dark-matter (SIDM) density spike around merging supermassive black holes (SMBHs) may be able to supply the dynamical friction needed to shrink binaries from $\sim 1\, \mathrm{pc}$ to $\sim 10^{-2} \,\mathrm{pc}$, thereby resolving the long-standing ``final-parsec problem.'' Embedding the binary-halo system in a cosmological population model, we evolve the inspiral under the combined influence of gravitational-wave (GW) emission and SIDM drag, compute the resulting nanohertz G…

#COZMIC - Cosmological Zoom-in Simulations with Initial Conditions Beyond Cold Dark Matter / Cosmological Zoom-in Simulations with Fractional non-CDM Initial Conditions / Cosmological Zoom-in Simulations of Self-interacting Dark Matter with Suppressed Initial Conditions: https://iopscience.iop.org/article/10.3847/1538-4357/adceef / https://iopscience.iop.org/article/10.3847/1538-4357/adce83 / https://iopscience.iop.org/article/10.3847/1538-4357/adce82 -> Scientists code Milky Way twin galaxies to better understand dark matter: https://today.usc.edu/scientists-code-milky-way-twin-galaxies-to-better-understand-dark-matter - USC researchers led the development of a computer simulation that gives astrophysicists a mechanism for testing ideas about dark matter and its behavior in the Milky Way and other galaxies.

Detection of a dark matter sub-halo near the Sun from pulsar timing
Sukanya Chakrabarti, Philip Chang, Stefano Profumo, Peter Craig
https://arxiv.org/abs/2507.16932

Detection of a dark matter sub-halo near the Sun from pulsar timing
Using pulsar accelerations, we identify and constrain the properties of a dark matter sub-halo in the Galaxy for the first time from analyzing the excess, correlated power in the acceleration field of binary pulsars. We find that this sub-halo has a mass of $1.02^{+3.47}_{-0.90} \times 10^{7}~M_{\odot}$ and is located at Galactic coordinates $d = 0.93^{+0.32}_{-0.38}$ kpc, $b=36.78^{+17.59}_{-23.55}$, $l=30.16^{+19.36}_{-23.82}$, or equivalently at Galactocentric coordinates $X = 7.52^{+0.34}_{…

The CSA releases Matter 1.4.2 to improve reliability, stability, and cross-platform coordination, like Wi-Fi-only commissioning to cut its Bluetooth dependency (Jennifer Pattison Tuohy/The Verge)
https://www.theverge.com/matter/757179/matter-1…

Matter’s latest update doubles down on stability and pushes the platforms to play better together
Updates to how Wi-Fi routers work in Matter, how devices connect to the network, and the addition of Wi-Fi commissioning arrive with the latest Matter spec.

Intrinsic pressure as a convenient mechanical framework for dry active matter
Zihao Sun, Longfei Li, Chuyun Wang, Jing Wang, Huaicheng Chen, Gao Wang, Liyu Liu, Fangfu Ye, Mingcheng Yang
https://arxiv.org/abs/2507.14644

Intrinsic pressure as a convenient mechanical framework for dry active matter
The identification of local pressure in active matter systems remains a subject of considerable debate. Through theoretical calculations and extensive simulations of various active systems, we demonstrate that intrinsic pressure (defined in the same way as in passive systems) is an ideal candidate for local pressure of dry active matter, while the self-propelling forces on the active particles are considered as effective external forces originating from the environment. Such a framework is univ…

Dehnen-type dark matter wormholes in the $f(\mathcal{R},\mathcal{L}_m,\mathcal{T})$ action
A. Errehymy, O. Donmez, B. Turimov, K. Myrzakulov, N. Alessa, A. -H. Abdel-Aty
https://arxiv.org/abs/2507.16465

Dehnen-type dark matter wormholes in the $f(\mathcal{R},\mathcal{L}_m,\mathcal{T})$ action
We are exploring the possibility of traversable wormholes existing in a more realistic context. Specifically, we are looking at scenarios that don't rely on exotic factors, like having a mass shell at the throat or allowing particles and antiparticles to coexist without annihilation. To do this, we are constructing wormholes with double power-law density distributions, drawing inspiration from the Dehnen-type dark matter halo in the framework of generalized geometry-matter coupling gravity. Our…

Dark matter pair absorption
Martin Bauer, Javier Perez-Soler, Jack D. Shergold
https://arxiv.org/abs/2507.14287 https://arxiv.org/pdf…

Dark matter pair absorption
We present a comprehensive analysis of the sensitivity of atomic transitions to light dark matter pair absorption. Unlike scattering, where only a fraction of the dark matter energy is deposited, pair absorption processes absorb the full mass, and are therefore capable of constraining far lighter dark matter. Spin-flip and fine structure transitions are able to constrain electroweak scale axial-vector couplings for bosonic dark matter with $μ\mathrm{eV}$ to eV masses, whilst principal quantum …

Inference of matter power spectrum at z=0 using DESI DR1 Full-Shape data
R. Cereskaite, E. Mueller, C. Howlett, Tamara M. Davis, J. Aguilar, S. Ahlen, D. Bianchi, D. Brooks, F. J. Castander, T. Claybaugh, A. Cuceu, A. de la Macorra, S. Ferraro, A. Font-Ribera, J. E. Forero-Romero, E. Gaztanaga, G. Gutierrez, C. Hahn, K. Honscheid, D. Huterer, M. Ishak, R. Joyce, S. Juneau, D. Kirkby, A. Kremin, O. Lahav, A. Lambert, M. Landriau, L. Le Guillou, M. Manera, A. Meisner, R. Miquel, J. Moust…

Inference of matter power spectrum at z=0 using DESI DR1 Full-Shape data
Measurements of galaxy distributions at large cosmic distances capture clustering from the past. In this study, we use a cosmological model to translate these observations into the present-day galaxy distribution. Specifically, we reconstruct the 3D matter power spectrum at redshift $ z = 0 $ using Dark Energy Spectroscopic Instrument (DESI) Year 1 (DR1) galaxy clustering data and Cosmic Microwave Background (CMB) observations, assuming the $ Λ\text{CDM} $ model, and compare it to the result a…

Quantum control of Nitrogen-Vacancy spin in Diamonds: Towards matter-wave interferometry with massive objects
N. Levi, O. Feldman, Y. Rosenzweig, D. Groswasser, A. Elgarat, M. Gal-Katizri, R. Folman
https://arxiv.org/abs/2508.15504

Quantum control of Nitrogen-Vacancy spin in Diamonds: Towards matter-wave interferometry with massive objects
Quantum mechanics (QM) and General relativity (GR), also known as the theory of gravity, are the two pillars of modern physics. A matter-wave interferometer with a massive particle can test numerous fundamental ideas, including the spatial superposition principle - a foundational concept in QM - in previously unexplored regimes. It also opens the possibility of probing the interface between QM and GR, such as testing the quantization of gravity. Consequently, there exists an intensive effort to…

Observation of charge–parity symmetry breaking in baryon decays: #universe.

Observable signatures of Black Holes with Hernquist Dark Matter Halo having a cloud of strings: From Geodesics to Shadow
Faizuddin Ahmed, Ahmad Al-Badawi, \.Izzet Sakall{\i}
https://arxiv.org/abs/2506.18457

Observable signatures of Black Holes with Hernquist Dark Matter Halo having a cloud of strings: From Geodesics to Shadow
We present a comprehensive theoretical investigation of a novel black hole (BH) spacetime: a Schwarzschild BH embedded in a Hernquist-type dark matter halo (HDMH) and surrounded by a cloud of cosmic strings (CSs) -- collectively termed the Schwarzschild-HDMH with CS (SHDMHCS) configuration. By analyzing the spacetime geometry, we explore how key parameters -- the core radius and halo density of the dark matter, along with the string tension -- affect the geodesic motion of both massless and mas…

Matter-Update: Smart-Home-Standard sperrt Trojaner-Geräte aus
Das Update auf Version 1.4.2 schließt potenzielle Sicherheitslücke und erleichtert den Betrieb von Saugrobotern und Wi-Fi-Geräten.
https://www.

Replaced article(s) found for astro-ph.HE. https://arxiv.org/list/astro-ph.HE/new
[2/2]:
- Boosted dark matter versus dark matter-induced neutrinos from single and stacked blazars
Andrea Giovanni De Marchi, Alessandro Granelli, Jacopo Nava, Filippo Sala

Association between optically identified galaxy clusters and the underlying dark matter halos
DES Collaboration, Shulei Cao, Hao-Yi Wu, Matteo Costanzi, Arya Farahi, Sebastian Grandis, David H. Weinberg, August E. Evrard, Eduardo Rozo, Andr\'es N. Salcedo, Chun-Hao To, Lei Yang, Conghao Zhou
https://arxiv.org/abs/2506.17526

Association between optically identified galaxy clusters and the underlying dark matter halos
Clusters of galaxies trace massive dark matter halos in the Universe, but they can include multiple halos projected along lines of sight. We study the halos contributing to clusters using the Cardinal simulation, which mimics the Dark Energy Survey data. We use the red-sequence-based cluster finding algorithm redMaPPer as a case study. For each cluster, we identify the halos hosting its member galaxies, and we define the main halo as the one contributing the most to the cluster's richness ($λ$…

Omnidirectionally manipulated skyrmions in an orientationally chiral system
Jiahao Chen, Wentao Tang, Xingzhou Tang, Yang Ding, Jie Ni, Yuxi Chen, Bingxiang Li, Rui Zhang, Juan de Pablo, Yanqing Lu
https://arxiv.org/abs/2506.16781

Omnidirectionally manipulated skyrmions in an orientationally chiral system
Skyrmions, originally from condensed matter physics, have been widely explored in various physical systems, including soft matter. A crucial challenge in manipulating topological solitary waves like skyrmions is controlling their flow on demand. Here, we control the arbitrary moving direction of skyrmions in a chiral liquid crystal system by adjusting the bias of the applied alternate current electric field. Specifically, the velocity, including both moving direction and speed can be continuous…

Going beyond $S_8$: fast inference of the matter power spectrum from weak-lensing surveys
Cyrille Doux, Tanvi Karwal
https://arxiv.org/abs/2506.16434 https…

Going beyond $S_8$: fast inference of the matter power spectrum from weak-lensing surveys
Weak lensing surveys are often summarized by constraints on the derived parameter ${S_8\equivσ_8\sqrt{Ω_{\rm m}/0.3}}$, obscuring the rich scale and redshift information encoded in the data, and limiting our ability to identify the origin of any tensions with $Λ$CDM predictions from the cosmic microwave background. In this work, we introduce a fast and flexible framework to extract the scale-dependent matter power spectrum $P(k, z)$ from cosmic shear and CMB lensing measurements, parameteriz…

Source: Meta has signed a deal with Google, worth more than $10B over six years, to use Google Cloud's servers, storage, networking, and other services (The Information)
https://www.theinformation.com/articles/meta-signs-10-billion-plus-cloud-deal-goo…

Meta Signs $10 Billion-Plus Cloud Deal With Google
Google has struck a major cloud computing deal with Meta Platforms, according to two people familiar with the matter. As part of the agreement, the social media giant will use Google Cloud’s servers, storage, networking and other services, one of the people said. The deal—worth more than $10 ...

Observational Constraints on Scalar Field--Matter Interaction in Weyl Integrable Spacetime
Andronikos Paliathanasis
https://arxiv.org/abs/2506.16223 https:…

Observational Constraints on Scalar Field--Matter Interaction in Weyl Integrable Spacetime
We test an analytic cosmological solution within the framework of Weyl Integrable Spacetime using current observational data. In this model, dark energy is described by a pressureless fluid, while a scalar field arises naturally through the definition of the connection. This gravitational theory reveals a Chameleon Mechanism leading to a nonzero interaction between the scalar field and the matter sector. This model extends the standard $Λ$CDM cosmology by introducing one additional degree of f…

Excitonic contributions to dark matter-electron scattering
Nora Taufertsh\"ofer, Vanessa Zema, Riccardo Catena, Valerio Olevano, Nicola A. Spaldin
https://arxiv.org/abs/2507.14345

Excitonic contributions to dark matter-electron scattering
We determine whether excitonic effects affect predictions of dark matter (DM)-electron scattering rates by calculating the energy- and momentum-dependent energy-loss function, including electron-hole interaction excitonic effects, for the dark-matter scintillating detector materials GaAs and NaI. By comparing our results using the Bethe-Salpeter equation in the framework of many-body perturbation theory, which explicitly includes excitonic effects, with those using the quasiparticle random-phas…

Accelerating Universe without dark energy: matter creation after DESI DR2
Sauvik Bhattacharjee, Sudip Halder, Jaume de Haro, Supriya Pan, Emmanuel N. Saridakis
https://arxiv.org/abs/2507.15575

Accelerating Universe without dark energy: matter creation after DESI DR2
We investigate the cosmological matter creation scenario, an alternative approach to both dark energy and modified gravity theories, after the recent DESI DR2-BAO release. We consider that the total matter sector consists of three independently evolving components, namely, radiation, baryons, and dark matter, with the latter being governed by an adiabatic matter creation process that leads to a modified continuity equation. Due to the violation of the standard conservation law, a creation press…

Union through UNITY - Cosmology with 2000 SNe Using a Unified Bayesian Framework: #DarkEnergy Surprise: https://newscenter.lbl.gov/2025/07/21/super-set-of-supernovae-suggests-dark-energy-surprise/ - namely "tension with flat cold dark matter and possible evidence for thawing dark energy". Also a looong interview with the first author: https://www.youtube.com/watch?v=BkfVo401mck

Robustness of Solutions of the Quantum Kinetic Equations in the Presence of Matter Density Fluctuations
Shashank Shalgar, Mariam Gogilashvili
https://arxiv.org/abs/2508.15747 ht…

Robustness of Solutions of the Quantum Kinetic Equations in the Presence of Matter Density Fluctuations
We investigate the role of fluctuations in the matter density on neutrino flavor evolution by studying their effects on the collision terms in the spherically symmetric quantum kinetics equations (QKEs). We solve the QKEs with varying radial resolution ($r_{\mathrm{bins}} = 150 \, , 1500 \, , 15000$) to assess numerical convergence in angular distributions, number densities, and energy spectra for four neutrino flavors ($ν_e$, $\barν_e$, $ν_x$, $\barν_x$). Our results demonstrate that the s…

Quantum Beatings in Optical Cavities
Ishaan Ganti, Jianshu Cao
https://arxiv.org/abs/2507.17339 https://arxiv.org/pdf/2507.17339

Quantum Beatings in Optical Cavities
Cavity polaritons, quasiparticles formed by coherent light-matter coupling, are at the heart of fundamental concepts of quantum optics. The quintessential signature of this coherent coupling is the Rabi oscillation, which results from the neglect of the counter-rotating-wave (CRW) effect in the weak-coupling regime. The goal of this letter is to predict resonant beatings that envelop the Rabi oscillation on the second or higher excitation manifold. These polariton beatings arise from the CRW te…

The physics and mathematics of living and dying matter
Tanniemola B. Liverpool, Kristian K. M\"uller-Nedebock, Xichen Chao, Chang Yuan
https://arxiv.org/abs/2507.14294

The physics and mathematics of living and dying matter
We introduce and study a class of active matter models in which we keep track of fuel (stored energy) consumption. They are by construction, thermodynamically consistent. Using these models it is possible for us to observe and follow how active behaviour develops and also how it dissipates as the energy runs out. It is also straightforward to define, calculate and keep track of macroscopic thermodynamic quantities.

Detection of pure warm-hot #IntergalacticMedium emission from a 7.2 Mpc long filament in the Shapley supercluster using X-ray spectroscopy: https://www.aanda.org/articles/aa/full_html/2025/06/aa54944-25/aa54944-25.html -> Astronomers have discovered a huge filament of hot gas bridging four galaxy clusters: https://www.esa.int/Science_Exploration/Space_Science/XMM-Newton/The_models_were_right_astronomers_find_missing_matter - at 10 times as massive as our galaxy, the thread could contain some of the Universe’s ‘missing’ matter, addressing a decades-long mystery.

Strong Confinement of a Nanoparticle in a Needle Paul Trap: Towards Matter-Wave Interferometry with Nanodiamonds
Peter Skakunenko, Daniel Folman, Yaniv Bar-Haim, Ron Folman
https://arxiv.org/abs/2508.14272

Strong Confinement of a Nanoparticle in a Needle Paul Trap: Towards Matter-Wave Interferometry with Nanodiamonds
Quantum mechanics (QM) and General relativity (GR), also known as the theory of gravity, are the two pillars of modern physics. A matter-wave interferometer with a massive particle, can test numerous fundamental ideas, including the spatial superposition principle - a foundational concept in QM - in completely new regimes, as well as the interface between QM and GR, e.g., testing the quantization of gravity. Consequently, there exists an intensive effort to realize such an interferometer. While…

Strangeon Matter: from Stars to Nuggets
Haoyang Qi, Renxin Xu
https://arxiv.org/abs/2507.13935 https://arxiv.org/pdf/2507.13935

Strangeon Matter: from Stars to Nuggets
The fact that strange sea quarks are abundant in the nucleons, but without strangeness, is of great importance for understanding the nature of dense matter condensed by the strong interaction, particularly in the context of the ``gigantic nucleus'' formed by the gravitational collapse of an evolved massive star. We hypothesize that the basic unit of bulk strong matter with the light-flavor symmetry of valence quarks is ``strangeon'', which is the counterpart of the nucleon found in atomic nucle…

Connecting Early Dark Energy to Late Dark Energy by the Diluting Matter Potential
Eduardo I. Guendelman, Ramon Herrera, Pedro Labrana
https://arxiv.org/abs/2507.17095 https://…

Connecting Early Dark Energy to Late Dark Energy by the Diluting Matter Potential
In this work we study a scale invariant gravity theory containing two scalar fields, dust particles and a measure defined from degrees of freedom independent of the metric. The integration of the degrees of freedom that define the measure spontaneously break the scale symmetry, leaving us in the Einstein frame with an effective potential that is dependent on the density of the particles. The potential contains three flat regions, one for inflation, another for early dark energy and the third fo…

Simba Simulation: The Effect of Feedback Physics on Matter Distribution in the Cosmic Web
Chenze Dong, Florian Dedieu, Daniela Gal\'arraga-Espinosa, Khee-Gan Lee, Daniele Sorini, Romeel Dav\'e
https://arxiv.org/abs/2507.16115

Simba Simulation: The Effect of Feedback Physics on Matter Distribution in the Cosmic Web
The discrepancy between the early-time estimation and late-time observation on the cosmic baryon content - the 'missing baryon problem' - is a longstanding problem in cosmology. Although recent studies with fast radio bursts (FRBs) have largely addressed this discrepancy, the precise spatial distribution of these baryons remains uncertain due to the effect of galaxy feedback. Cosmological hydrodynamical simulations such as Simba have shown that the partitioning of baryons between the intergalac…

Marangoni swimmer pushing particle raft under 1D confinement
Abhradeep Maitra, Anupam Pandey, Sebastien Michelin, Sunghwan Jung
https://arxiv.org/abs/2508.15205 https://

Marangoni swimmer pushing particle raft under 1D confinement
Active matter systems, due to their spontaneous self-propulsion ability, hold potential for future applications in healthcare and environmental sustainability. Marangoni swimmers, a type of synthetic active matter, are a common model system for understanding the underlying physics. Existing studies of the interactions of active matter with passive particles have mostly focused on the modification of the behavior of the passive particles. In contrast, we analyse here experimentally the impact on…

Design of high-efficiency UHV loading of nanodiamonds into a Paul trap: Towards Matter-Wave Interferometry with Massive Objects
Rafael Benjaminov, Sela Liran, Or Dobkowski, Yaniv Bar-Haim, Michael Averbukh, Ron Folman
https://arxiv.org/abs/2508.14722

Design of high-efficiency UHV loading of nanodiamonds into a Paul trap: Towards Matter-Wave Interferometry with Massive Objects
Quantum mechanics (QM) and General relativity (GR), also known as the theory of gravity, are the two pillars of modern physics. A matter-wave interferometer with a massive particle, can test numerous fundamental ideas, including the spatial superposition principle - a foundational concept in QM - in completely new regimes, as well as the interface between QM and GR, e.g., testing the quantization of gravity. Consequently, there exists an intensive effort to realize such an interferometer. While…

Testing the dark side of neutrino oscillations with the solar neutrino fog at Dark Matter experiments
Julia Gehrlein, Tanmay Kushwaha
https://arxiv.org/abs/2508.14166 https://…

Testing the dark side of neutrino oscillations with the solar neutrino fog at Dark Matter experiments
The recent detection of the solar neutrino background at Dark Matter direct detection experiments paves the way to fully explore an important degeneracy in neutrino oscillations in the presence of new interactions, named the LMA-Dark degeneracy. This degeneracy makes it impossible to determine the neutrino mass ordering in oscillation experiments if neutrinos have new vectorial interactions with matter. As the composition of solar neutrinos at the Earth consists of all three neutrino flavors, t…

Towards relativistic inspirals into black holes surrounded by matter
Luk\'a\v{s} Polcar, Vojt\v{e}ch Witzany
https://arxiv.org/abs/2507.15720 https://

Towards relativistic inspirals into black holes surrounded by matter
Extreme mass ratio inspirals, compact objects spiraling into massive black holes, represent key sources for future space-based gravitational-wave detectors such as LISA. The inspirals will occur within rich astrophysical environments containing gravitating matter. Motivated by this, we develop a fully relativistic framework for inspirals under the gravitational influence of matter environments. Our approach employs a two-parameter perturbation expansion in the mass ratio and an environmental pa…

Analysis of shape and angular orientation parameters of velocity-dependent dark matter annihilation signals in Galactic Centers for FIRE simulations
Daniel McKeown
https://arxiv.org/abs/2506.16583

Analysis of shape and angular orientation parameters of velocity-dependent dark matter annihilation signals in Galactic Centers for FIRE simulations
We use FIRE-2 zoom cosmological simulations of Milky Way size galaxy halos to characterize the shape of the J-factor emission signal on the sky. We find that, at a fixed dJ/dΩ contour,the shape is well-fit by an ellipse, with semi-major axis Rmajor and semi-minor axis Rminor measured in degrees on the sky. We use least squares fitting to fit ellipses to the J-factor emission, viewed from the solar location. The ratio of minor to major axes (Rminor/Rmajor) allows us to characterize the shape of…

A novel approach to cosmological non-linearities as an effective fluid: #universe: https://news.uq.edu.au/2025-08-revealing-how-matter-affects-evolution-universe

Trapping and cooling of nanodiamonds in a Paul trap under ultra-high vacuum: Towards matter-wave interferometry with massive objects
Omer Feldman, Ben Baruch Shultz, Maria Muretova, Or Dobkowski, Yonathan Japha, David Grosswasser, Ron Folman
https://arxiv.org/abs/2508.14687

Trapping and cooling of nanodiamonds in a Paul trap under ultra-high vacuum: Towards matter-wave interferometry with massive objects
Quantum mechanics (QM) and General relativity (GR), also known as the theory of gravity, are the two pillars of modern physics. A matter-wave interferometer with a massive particle can test numerous fundamental ideas, including the spatial superposition principle - a foundational concept in QM - in previously unexplored regimes. It also opens the possibility of probing the interface between QM and GR, such as testing the quantization of gravity. Consequently, there exists an intensive effort to…

Identifying Monochromatic Signals in LISA and Taiji via Spectral Split: Gravitational Waves versus Ultralight Dark Matter
Yue-Hui Yao, Tingyuan Jiang, Wenyan Ren, Di Chen, Yong Tang, Yu-Feng Zhou
https://arxiv.org/abs/2508.14655

Identifying Monochromatic Signals in LISA and Taiji via Spectral Split: Gravitational Waves versus Ultralight Dark Matter
The detection of gravitational waves (GWs) has opened a new window to explore the dark Universe. Ultralight dark matter (ULDM), an attractive candidate for dark matter, might induce monochromatic signals in gravitational-wave (GW) laser interferometers. However it is not clear how such signals are disentangled from the GWs emitted by galactic compact binaries. Here we initiate the investigation on the spectral split of monochromatic signals caused by detector's heliocentric motion in space and …

Replaced article(s) found for cond-mat.soft. https://arxiv.org/list/cond-mat.soft/new
[1/1]:
- The importance of being discrete -- An agent-based model for active nematics and more
Mathieu Dedenon, Carles Blanch-Mercader, Karsten Kruse, Jens Elgeti

Fully Self-Consistent Semiclassical Gravity
R. Muci\~no, E. Okon, D. Sudarsky, M. Wiedemann
https://arxiv.org/abs/2506.17149 https://…

Fully Self-Consistent Semiclassical Gravity
A theory of quantum gravity consists of a gravitational framework which, unlike general relativity, takes into account the quantum character of matter. In spite of impressive advances, no fully satisfactory, self-consistent and empirically viable theory with those characteristics has ever been constructed. A successful semiclassical gravity model, in which the classical Einstein tensor couples to the expectation value of the energy-momentum tensor of quantum matter fields, would, at the very le…

Cosmic Sign-Reversal: Non-Parametric Reconstruction of Interacting Dark Energy with DESI DR2
Yun-He Li, Xin Zhang
https://arxiv.org/abs/2506.18477 https://…

Cosmic Sign-Reversal: Non-Parametric Reconstruction of Interacting Dark Energy with DESI DR2
A direct interaction between dark energy and dark matter provides a natural and important extension to the standard $Λ$CDM cosmology. We perform a non-parametric reconstruction of the vacuum energy ($w=-1$) interacting with cold dark matter using the cosmological data from DESI DR2, Planck CMB, and three SNIa samples (PP, DESY5, and Union3). By discretizing the coupling function $β(z)$ into 20 redshift bins and assuming a Gaussian smoothness prior, we reconstruct $β(z)$ without assuming any …

INTEGRAL, eROSITA and Voyager Constraints on Light Bosonic Dark Matter: ALPs, Dark Photons, Scalars, $B-L$ and $L_{i}-L_{j}$ Vectors
Thong T. Q. Nguyen, Pedro De la Torre Luque, Isabelle John, Shyam Balaji, Pierluca Carenza, Tim Linden
https://arxiv.org/abs/2507.13432

INTEGRAL, eROSITA and Voyager Constraints on Light Bosonic Dark Matter: ALPs, Dark Photons, Scalars, $B-L$ and $L_{i}-L_{j}$ Vectors
The decay of light bosonic dark matter particles can produce a bright electron/positron ($e^+e^-$) flux that can be strongly constrained by local Voyager observations of the direct $e^+e^-$ flux, as well as 511 keV Line and X-ray continuum observations of $e^+e^-$ emission. We carefully analyze the $e^+e^-$ yield and resulting cosmic-ray and X-ray spectra from theoretically well-motivated light dark matter models, including: (a) electrophilic axion-like particles, (b) dark photons, (c) scalars,…

Unidirectional perfect absorption induced by chiral coupling in spin-momentum locked waveguide magnonics
Jie Qian, Qi Hong, Zi-Yuan Wang, Wen-Xin Wu, Yihao Yang, C. -M. Hu, J. Q. You, Yi-Pu Wang
https://arxiv.org/abs/2507.16698

Unidirectional perfect absorption induced by chiral coupling in spin-momentum locked waveguide magnonics
Chiral coupling opens new avenues for controlling and exploiting light-matter interactions. We demonstrate that chiral coupling can be utilized to achieve unidirectional perfect absorption. In our experiments, chiral magnon-photon coupling is realized by coupling the magnon modes in yttrium iron garnet (YIG) spheres with spin-momentum-locked waveguide modes supported by spoof surface plasmon polaritons (SSPPs). These photon modes exhibit transverse spin, with the spin direction determined by th…

Replaced article(s) found for cond-mat.soft. https://arxiv.org/list/cond-mat.soft/new
[1/1]:
- Depletion interaction between cylindrical inclusions in polymer brushes
Ji Woong Yu, Daeseong Yong, Bae-Yeun Ha, Changbong Hyeon

CosmoGLINT: Cosmological Generative Model for Line Intensity Mapping with Transformer
Kana Moriwaki, Rui Lan Jun, Ken Osato, Naoki Yoshida
https://arxiv.org/abs/2506.16843

CosmoGLINT: Cosmological Generative Model for Line Intensity Mapping with Transformer
Modelling star-forming galaxies is crucial for upcoming observations of large-scale matter and galaxy distributions with galaxy redshift surveys and line intensity mapping (LIM). We introduce CosmoGLINT (Cosmological Generative model for Line INtensity mapping with Transformer), a Transformer-based generative framework designed to create realistic galaxy populations from dark matter (DM)-only simulations. CosmoGLINT auto-regressively generates sequences of galaxy properties -- including star fo…

A note on entropy of matter in presence of gravity: status of extensivity of entropy
Saurav Samanta, Bibhas Ranjan Majhi
https://arxiv.org/abs/2507.14817 h…

A note on entropy of matter in presence of gravity: status of extensivity of entropy
Entropy of matter in a very strong gravity depends on cross-sectional area of the container of the system -- is being further bolstered by calculating entropy of a monoatomic gas kept under uniform strong gravity at Newtonian scale. This bypasses the earlier analysis where existence of horizon is crucial. Also the extensivity of this entropy has been discussed in the light of the same of a two-space dimensional ultra-relativistic non-interacting gas without gravity. The whole analysis, as far a…

Probing Purely Inelastic Scalar Dark Matter Across Colliders and Gravitational Wave Observatories
Jinhui Guo, Jia Liu, Chenhao Peng, Xiao-Ping Wang
https://arxiv.org/abs/2508.13276

Probing Purely Inelastic Scalar Dark Matter Across Colliders and Gravitational Wave Observatories
We propose and study a purely inelastic scalar dark matter model, where two real scalars-dark matter $ϕ_1$ and its excited partner $ϕ_2$ interact with the Standard Model via a Higgs portal. After mass diagonalization, only inelastic couplings remain, allowing the model to evade stringent bounds from direct detection. We show that thermal (co-)annihilation between $ϕ_1$ and $ϕ_2$ naturally yields the observed dark matter relic abundance. The same interaction structure can induce a strongly f…

Tidal adaptive softening and artificial fragmentation in cosmological simulations
Robert A. Mostoghiu Paun, Darren Croton, Chris Power, Alexander Knebe, Adam J. Ussing, Alan R. Duffy
https://arxiv.org/abs/2507.16930

Tidal adaptive softening and artificial fragmentation in cosmological simulations
Traditional N-body methods introduce localised perturbations in the gravitational forces governing their evolution. These perturbations lead to an artificial fragmentation in the filamentary network of the Large Scale Structure, often referred to as "beads-on-a-string." This issue is particularly apparent in cosmologies with a suppression of the matter power spectrum at small spatial scales, such as warm dark matter models, where the perturbations induced by the N-body discretisation dominate t…

Thermodynamics of the Reissner-Nordstr\"om black hole with quintessence matter on the EGUP framework
Hao Chen, Bekir Can L\"utf\"uo\u{g}lu, Hassan Hassanabadi, Zheng-Wen Long
https://arxiv.org/abs/2508.15467

Thermodynamics of the Reissner-Nordström black hole with quintessence matter on the EGUP framework
In this paper, we investigate the quantum correction on thermodynamics of the Reissner-Nordström black hole in the presence of the quintessence matter associated with dark energy. To this end, the modified Hawking temperature, heat capacity, and entropy functions of the black hole are derived. { Investigation reveals that the modified uncertainty principles and normalization factor $α$ restrict the lower bound value of horizon radius to affect the Hawking temperature and the parameter $η_{0}…

Exotic Dark Matter and the DESI Anomaly
Matteo Braglia, Xingang Chen, Abraham Loeb
https://arxiv.org/abs/2507.13925 https://arxiv.org…

Exotic Dark Matter and the DESI Anomaly
Exotic dark matter (EDM) refers to a dark matter species whose equation of state deviates from zero at late times. This behavior enables it to model a variety of non-standard late-time cosmologies, offering alternatives to various dark energy (DE) models, especially when the DE sector violates the null energy condition. In this work, by fitting to CMB, BAO, and Supernovae (SNe) data and comparing models in a Bayesian approach, we show that simple models of exotic dark matter are statistically c…

Chameleon Gravity as an Alternative to Dark Matter
Raziyeh Zaregonbadi, Nasim Saba, Mehrdad Farhoudi
https://arxiv.org/abs/2507.13972 https://

Chameleon Gravity as an Alternative to Dark Matter
By studying the chameleon gravity on galaxy scales, we investigate the effects of the chameleon dark matter. To perform this task, we consider the dynamics of the chameleon scalar field in the region of galactic halos in static spherically symmetric spacetimes that differ only slightly from classical general relativity, but have similar symmetry behind this region. Hence, we demonstrate its ability to act as dark matter. In fact, by obtaining the expression for the tangential speed in this regi…