Tootfinder

RE: https://mastodon.social/@Datagraver/115838941958659188
Watch Tesla's rise and fall (dark green bar) in Dutch new car sales. BYD just popping up here (last picture, at the bottom).

The DECADE #CosmicShear project - a new weak lensing shape catalog of 107 million galaxies: https://arxiv.org/abs/2502.17674 -> UChicago astrophysicists test a new piece of the sky to probe dark matter and dark energy: https://www.eurekalert.org/news-releases/1108575

The Year in Physics
Physicists spotted a “terribly exciting” new black hole,
doubled down on weakening dark energy,
and debated the meaning of quantum mechanics
https://www.quantamagazine.org/the-year-in-physics-20251217/

The Year in Physics | Quanta Magazine
Physicists spotted a “terribly exciting” new black hole, doubled down on weakening dark energy, and debated the meaning of quantum mechanics.

#30DayMapChallenge 🗺️ Day 3️⃣: Polygons
I went with a classic #choropleth map to keep things simple (and save my energy) and this one shows the population change of the 201 barangays (kinda like wards) of the city of Pasay in the

On Website Technicals (2021-02) - Tech updates: image preview tweak for dark mode, DNS secondary fun. - https://m.earth.org.uk/note-on-site-technicals-45.html

On Website Technicals (2021-02)
Tech updates: image preview tweak for dark mode, DNS secondary fun.

“As we consider these three risks, we don’t have to speculate about how AI data centers might affect Massachusetts. Consider Ireland, a country with a similar population size, where AI has driven a data center boom. Warehouses full of servers are on pace to use one-third of Ireland’s electricity, drawing from fossil-fuel power plants and wind farms alike. That keeps old, dirty plants on the grid, sucks up renewable energy that otherwise would help replace fossil fuels, and drives up costs fo…

Merry Christmas to all of you!
Little lights shining in the dark.

Moody Urbanity - Action Required 🧭
情绪化城市 - 行动指南 🧭
📷 Pentax MX
🎞️ Ilford HP5 Plus 400, expired 1993
#filmphotography #Photography #blackandwhite

A dark Christmas looms in Odesa Oblast as Russia hammers energy facilities, bridges, ports: https://benborges.xyz/2025/12/22/a-dark-christmas-looms-in.html

Constranits of dynamical dark energy models from different observational datasets
Peiyuan Xu, Lu Chen, Guohao Li, Yang Han
https://arxiv.org/abs/2510.10439 https://

Constranits of dynamical dark energy models from different observational datasets
The measurements of baryon acoustic oscillation by the Dark Energy Spectroscopic Instrument Data Release 2 indicate that dark energy may be a dynamical quantity with a time-varying equation of state. This challenges the core assumptions of the $Λ$CDM model and has generated significant interest in dynamical dark energy models. Therefore, studying the parameterization of the equation of state for dynamical dark energy is crucial. Existing work has achieved fruitful results in the dark energy mo…

Note on Kaniadakis Holographic Dark Energy
A. Sheykhi, A. Asvar, E. Ebrahimi
https://arxiv.org/abs/2510.11569 https://arxiv.org/pdf/2510.11569

Note on Kaniadakis Holographic Dark Energy
It is well-known that any modification to the entropy expression not only change the energy density of the holographic dark energy, but also modifies the cosmological field equations through thermodynamics-gravity correspondence. Here we revisit the Kaniadakis holographic dark energy (KHDE) in the background of the modified Kaniadakis cosmology by incorporating the effects of Kaniadakis entropy into the Friedmann equations. We choose the Hubble radius, $L=H^{-1}$, as system's IR cutoff and dete…

Dark Matter Boosted by Terrestrial Collisions
Zamiul Alam, Christopher V. Cappiello, Francesc Ferrer
https://arxiv.org/abs/2510.12791 https://arxiv.org/pdf…

Dark Matter Boosted by Terrestrial Collisions
Inelastic dark matter (IDM) models feature an energy threshold for scattering with Standard Model particles, which enables their consistency with the increasingly stringent limits placed by direct detection experiments. In a typical construction, elastic scattering is absent at tree level, and a lighter dark matter state must first upscatter into a heavier state in order to interact with the nuclei in the detector. We model the excitation of IDM in the Earth followed by its downscattering insid…

““We visited a dark factory producing some astronomical number of mobile phones,” recalls Greg Jackson, the boss of British energy supplier Octopus.
“The process was so heavily automated that there were no workers on the manufacturing side, just a small number who were there to ensure the plant was working.
“You get this sense of a change, where China’s competitiveness has gone from being about government subsidies and low wages to a tremendous number of highly skilled, educated engineers who are innovating like mad.””
https://www.telegraph.co.uk/business/2025/10/12/why-western-executives-visit-china-coming-back-terrified/

We report the first calculation of light scattering on heavy dark matter (DM) particles: #DarkMatter, the substance that makes up most of the Universe, could potentially be detected as a red or blue light ‘fingerprint’, new research shows: https://www.york.ac.uk/news-and-events/news/2025/research/dark-matter-light-colour/

Constraints on the interacting holographic dark energy models: implications from background and perturbations data
N. Nazari Pooya
https://arxiv.org/abs/2510.08875 https://

Constraints on the interacting holographic dark energy models: implications from background and perturbations data
In this study, we employ a two-step method to analyze models of holographic dark energy (HDE) and interacting holographic dark energy (IHDE), incorporating three distinct dark energy (DE)-dark matter (DM) interaction terms. First, using the latest background dataset, we conduct a Markov chain Monte Carlo (MCMC) analysis to constrain the free parameters of the models. Then, we assess the models against each other using the key background parameters and compare them to the $Λ$CDM standard model.…

This is not good. The energy that is required to heat the volume of one of the world's largest lakes by an extra 3°C is enormous. Excellent comments by colleagues Jay Austin and Maggie Xenopoulos on the anomalous heating of Lake Superior. Coinciding with the anniversary of the sinking of the Edmund Fitzgerald, this will likely also extend the shipping season, adding late season risks.

Quantized Dirac Fields in torsionful gravity: cosmological implications and links with the dark universe
Antonio Capolupo, Sante Carloni, Luca Fabbri, Simone Monda, Aniello Quaranta, Stefano Vignolo
https://arxiv.org/abs/2510.06874

Quantized Dirac Fields in torsionful gravity: cosmological implications and links with the dark universe
We consider a classical field in square torsion theory as a source of torsion for a quantum fermion field in FLRW metric. In the framework of QFT, we obtain vacuum contributions to the energy-momentum tensor and to the axial current that modify the dynamics of the classical field and the field equations as back-reaction. These contributions lead to a modified classical field and therefore to a modified torsion term $L^μ$ and expectation value of energy-momentum tensor $T^{μν}$ on the quantum…

Search for dark matter production in association with bottom quarks and a lepton pair in proton-proton collisions at $\sqrt{s}$ = 13 TeV
CMS Collaboration
https://arxiv.org/abs/2510.12396

Search for dark matter production in association with bottom quarks and a lepton pair in proton-proton collisions at $\sqrt{s}$ = 13 TeV
A search is performed for dark matter produced in association with bottom quarks and a pair of electrons or muons in data collected with the CMS detector at the LHC, corresponding to 138 fb$^{-1}$ of integrated luminosity of proton-proton collisions at a center-of-mass energy of 13 TeV. For the first time at the LHC, the associated production of a bottom quark-antiquark pair and a new heavy neutral Higgs boson (H) that subsequently decays into a leptonically decaying Z boson and a pseudoscalar …

Low-energy threshold demonstration for dark matter searches in TREX-DM with an $^{37}$Ar source produced at CNA HiSPANoS
J. Castel, S. Cebri\'an, T. Dafni, D. D\'iez-Ib\'a\~nez, A. Ezquerro, B. Fern\'andez, J. Gal\'an, J. A. Garc\'ia, C. Guerrero, I. G. Irastorza, G. Luz\'on, C. Margalejo, H. Mirallas, L. Obis, A. Ortiz de Sol\'orzano, O. P\'erez, J. Porr\'on, M. J. Puyuelo, A. Quintana

Low-energy threshold demonstration for dark matter searches in TREX-DM with an $^{37}$Ar source produced at CNA HiSPANoS
We report on the successful implementation of an $^{37}$Ar calibration source in the TREX-DM detector, a high-pressure time projection chamber designed for low-mass dark matter searches. The $^{37}$Ar source was produced through fast neutron activation of CaO powder at the HiSPANoS facility of Centro Nacional de Aceleradores (CNA) in Spain, yielding $O(1)$ kBq of activity. Using a novel combined GEM-Micromegas readout system, we successfully detected both characteristic emissions from $^{37}$Ar…

#Blakes7 Series C, Episode 06 - City at the Edge of the World
VILA: If the energy threshold isn't too low, and the field too thick. This one tried, but the air ran out on him. Ship was still in flight. [takes probe from skeleton]
KERRIL: Can I do anything?

Unified Dark Matter and Dark Energy in a model of Non-Canonical Scalar-Tensor Theory
Nihal Jalal Pullisseri, Sanil Unnikrishnan
https://arxiv.org/abs/2510.07103 https://

Unified Dark Matter and Dark Energy in a model of Non-Canonical Scalar-Tensor Theory
We consider a model of non-canonical scalar-tensor theory in which the kinetic term in the Brans-Dicke action is replaced by a non-canonical scalar field Lagrangian $\mathcal{L}(X, ϕ)= λX^αϕ^β- V(ϕ)$ where $X = (1/2) \partial_μ ϕ\partial^μ ϕ$ and $α$, $β$ and $λ$ are parameters of the model. This can be considered as a simple non-canonical generalization of the Brans-Dicke theory with a potential term which corresponds to a special case of this model with the values of the paramete…

Constraining neutrino electromagnetic properties with recent low-energy electron recoil data at dark matter direct detection experiments
M. Demirci, H. I. Sezer, M. F. Mustamin, A. B. Balantekin
https://arxiv.org/abs/2510.12449

Constraining neutrino electromagnetic properties with recent low-energy electron recoil data at dark matter direct detection experiments
Neutrinos that are elastically scattered off atomic electrons provide a unique opportunity to investigate the Standard Model (SM) and beyond SM physics. In this work, we explore the new physics effects of neutrino electromagnetic properties through elastic neutrino-electron scattering using solar neutrinos at the low energy range of PandaX-4T and XENONnT experiments. The properties of interest include the neutrino magnetic moment, millicharge, and charge radius, all of which are natural consequ…

Alleviating the $H_0$ tension through new interacting dark energy model in light of DESI DR2
Yi-Min Zhang, Tian-Nuo Li, Guo-Hong Du, Sheng-Han Zhou, Li-Yang Gao, Jing-Fei Zhang, Xin Zhang
https://arxiv.org/abs/2510.12627

Alleviating the $H_0$ tension through new interacting dark energy model in light of DESI DR2
The $H_0$ tension has become one of the most significant challenges in modern cosmology. The recent DESI DR2 data has shown a significant preference for dynamical dark energy, yet this has further exacerbated the $H_0$ tension. In this work, we explore the potential of new interacting dark energy models ($\widetildeΛ$CDM and $e\widetildeΛ$CDM) to alleviate the $H_0$ tension. We perform observational constraints using the latest baryon acoustic oscillation data from DESI DR2, cosmic microwave …

Crosslisted article(s) found for astro-ph.HE. https://arxiv.org/list/astro-ph.HE/new
[1/1]:
- Dark matter Simplified models in the Resonance Region
Mattia Di Mauro, Bohan Xie

Is CPL dark energy a mirage?
Mikel Artola, Ismael Ayuso, Ruth Lazkoz, Vincenzo Salzano
https://arxiv.org/abs/2510.04191 https://arxiv.org/pdf/2510.04191

Is CPL dark energy a mirage?
Recent observations from the Dark Energy Spectroscopic Instrument (DESI) raise doubts about the standard cosmological model, $Λ$CDM, suggesting a preference for an inherently dynamical dark energy component. The Chevallier-Polarski-Linder (CPL) parameterization -- a widely used two-parameter model for the dark energy equation of state -- displays marked early-time phantom behavior and a recent crossing of the phantom divide. These features suggest the convenience to check observationally the r…

An FPCA-Enhanced Ensemble Learning Framework for Photometric Identification of Type Ia Supernovae
Moonzarin Reza, Lifan Wang, Lei Hu
https://arxiv.org/abs/2510.09990 https://

An FPCA-Enhanced Ensemble Learning Framework for Photometric Identification of Type Ia Supernovae
Type Ia supernovae (SNe Ia) are essential tools for addressing key cosmic questions, including the Hubble tension and the nature of dark energy. Modern surveys are predominantly photometry-based, making the construction of a clean photometric SNe Ia sample crucial. In this study, we investigate whether functional principal component analysis (FPCA) scores derived from photometric light curves, combined with ensemble learning, can reliably distinguish SNe Ia from other transients using the PLAsT…

Determination of the absolute energy scale of the DAMPE calorimeter with the geomagnetic rigidity cutoff method
JingJing Zang, Chuan Yue, Qiang Yuan, Wei Jiang, Xiang Li, Yunlong Zhang, Cong Zhao, Fabio Gargano
https://arxiv.org/abs/2510.03854

Determination of the absolute energy scale of the DAMPE calorimeter with the geomagnetic rigidity cutoff method
The Dark Matter Particle Explorer (DAMPE) is a satellite-borne detector designed to detect high-energy cosmic ray particles with its core component being a BGO calorimeter capable of measuring energies from $\sim$GeV to $O(100)$ TeV. The 32 radiation lengths thickness of the calorimeter is designed to ensure full containment of showers produced by cosmic ray electrons and positrons (CREs) and $γ$-rays at energies below tens of TeV, providing high resolution in energy measurements. The absolute…

Weekend #Plankton Factoid 🦠🦐
Heliozoans are a group of amoeboid protists found commonly in both fresh and saltwater. They were termed sun-animalcules due to their spherical shape and distinctive radiating microtubules, which support axiopods used to capture food and facilitate movement. Some will also capture symbiotic algal cells which provide energy through photosynthesis. Heliozoa is &quo…

Updated constraints on interacting dark energy: A comprehensive analysis using multiple CMB probes, DESI DR2, and supernovae observations
Tian-Nuo Li, Guo-Hong Du, Yun-He Li, Yichao Li, Jia-Le Ling, Jing-Fei Zhang, Xin Zhang
https://arxiv.org/abs/2510.11363

Updated constraints on interacting dark energy: A comprehensive analysis using multiple CMB probes, DESI DR2, and supernovae observations
Recent DESI baryon acoustic oscillation (BAO) measurements, combined with Planck cosmic microwave background (CMB) data and DESY5 type Ia supernova (SN) data, indicate a significant deviation from $Λ$CDM, which seems to suggest that this deviation can be explained by an interaction between dark energy and dark matter. In this work, we perform a comprehensive analysis by utilizing the latest DESI DR2 BAO data in conjunction with CMB data from ACT, SPT, Planck, and WMAP, along with SN data from …

From ⁨⁨⁨⁨⁨#AnnafromUkraine⁩⁩⁩⁩⁩ @AnnafromUkraine@youtube.com
#⁠MOSCOW IN THE DARK: UKRAINE STRIKES CRITICAL #ENERGY CORRIDORS Vlog 1201: War in #Ukraine

Crosslisted article(s) found for hep-th. https://arxiv.org/list/hep-th/new
[1/1]:
- Intrinsically Quantum Effects of Axion Dark Matter are Undetectable
Yunjia Bao, Dhong Yeon Cheong, Nicholas L. Rodd, Joey Takach, Lian-Tao Wang, Kevin Zhou

Gravitational Wave Signatures of Warm Dark Matter in Gauge Extensions of the Standard Model
Lucia A. Popa (Institute of Space Sciences)
https://arxiv.org/abs/2510.05841 https://…

Gravitational Wave Signatures of Warm Dark Matter in Gauge Extensions of the Standard Model
We study the left-right symmetric extension of the Standard Model (LRSM), featuring a TeV-scale right-handed (RH) gauge boson $W_R$ and three RH neutrinos. This setup naturally realises the type-II seesaw mechanism for active neutrino masses. We identify the conditions that yield sufficient entropy dilution to reconcile the keV sterile neutrino dark matter energy density with observations while inducing an early matter domination (EMD) phase. These constrain the lightest active neutrino mass to…

Is Dark Energy Changing? Probing the Universe's Expansion with present and future astronomical probes
Mehdi Rezaei, Supriya Pan, Weiqiang Yang, David F. Mota
https://arxiv.org/abs/2510.09766

Is Dark Energy Changing? Probing the Universe's Expansion with present and future astronomical probes
This study explores the possibility of a time-varying dark energy (DE) equation of state (EoS) deviating from -1. We employ a comprehensive dataset of usual astronomical probes (Type Ia supernovae, baryon acoustic oscillations, Big Bang nucleosynthesis, Hubble data, and Planck 2018 CMB) alongside future mock gravitational wave (GW) distance measurements from the Einstein Telescope. We utilize the Pad'e approximation, a versatile framework encompassing well-known DE models like constant EoS, Che…

Moody Urbanity - UP 🆙
情绪化城市 - 上面 🆙
📷 Nikon FE
🎞️ Ilford HP5 Plus 400, expired 1993
#filmphotography #Photography #blackandwhite

Non-linear structure formation with elastic interactions in the dark sector
Jose Beltr\'an Jim\'enez, David Figueruelo, David F. Mota, Hans A. Winther
https://arxiv.org/abs/2510.12551

Non-linear structure formation with elastic interactions in the dark sector
Cosmological models where dark matter interacts with dark energy via a pure momentum transfer and with no energy exchange (i.e. elastic) provide compelling scenarios for addressing the apparent lack of structures at low redshift. In particular, it has been shown that measurements of $S_8$ may show a statistically significant preference for the presence of elastic interactions. In this work we implement a specific realisation of these scenarios into an $N$-body code to explore the non-linear reg…

On planetary orbits, ungravity and entropic gravity
G. P\'erez Cu\'ellar, M. Sabido
https://arxiv.org/abs/2510.06375 https://arxiv.org/pdf/2510.063…

On planetary orbits, ungravity and entropic gravity
In previous works, entropic gravity and ungravity have been considered as possible solutions to the dark energy and dark matter problems. To test the viability of these models, modifications to planetary orbits are calculated for ungravity and different models of entropic gravity. Using the gravitational sector of unparticles, an equation for the contribution to the effect of orbital precession is obtained. We conclude that the estimated values for the ungravity parameters from planetary orbits…

Investigating the $w$CDM Model with Latest DESI BAO Observations
Manisg Yadav, Archana Dixit, M. S. Barak, Anirudh Pradhan
https://arxiv.org/abs/2510.09074 https://

Investigating the $w$CDM Model with Latest DESI BAO Observations
In this study, we explore the impact of various combinations of CMB-independent datasets, including the recent DESI BAO measurements, on the equation of state (EoS) of dark energy and other cosmological parameters within the framework of the dynamical dark energy model ($w$CDM). Assuming a constant EoS parameter for dark energy, we derive constraints on the free parameters of the model using observational datasets such as DESI BAO, BBN, Observational Hubble Data (OHD), and Pantheon Plus (SN$^+$…

Crosslisted article(s) found for hep-ex. https://arxiv.org/list/hep-ex/new
[1/1]:
- Probing Dark Matter Interactions with Stellar Motion near Sagittarius A*
R. Andrew Gustafson, Ian M. Shoemaker, Volodymyr Takhistov

Multiprobe constraints on early and late time dark energy
Alexander Reeves, Simone Ferraro, Andrina Nicola, Alexandre Refregier
https://arxiv.org/abs/2510.06114 https://

Multiprobe constraints on early and late time dark energy
We perform a multiprobe analysis combining cosmic microwave background (CMB) data from Planck and the Atacama Cosmology Telescope (ACT), ACT CMB lensing, and large-scale structure (LSS) measurements from the Dark Energy Spectroscopic Instrument (DESI), including DESI Legacy Imaging Survey (LS) galaxies and baryon acoustic oscillations (BAOs). We present the first $5\times2$pt analysis of ACT DR6 lensing, DESI LS, and Planck ISW. Within $Λ$CDM, this yields $S_8 = σ_8(Ω_m/0.3)^{0.5} = 0.819 \p…

Observational Constraints on Chaplygin Gas Models in Non-Minimally Coupled Power Law $f(Q)$ Gravity with Quasars
Nakul Aggarwal, Ali Pourmand, Fatimah Shojai, Harish Parthasarathy
https://arxiv.org/abs/2510.12472

Observational Constraints on Chaplygin Gas Models in Non-Minimally Coupled Power Law $f(Q)$ Gravity with Quasars
In the framework of $f(Q)$ gravity, where gravity emerges from non-metricity $Q$, we explore the cosmological implications of its non-minimal coupling to matter. Inspired by the recent success of Chaplygin gas models in explaining dark energy, we consider a background fluid composed of baryonic matter, radiation, and a family of Chaplygin gas variants namely Generalized Chaplygin Gas (GCG), Modified Chaplygin Gas (MCG), and Variable Chaplygin Gas (VCG). We constrain these models with three rece…

Replaced article(s) found for hep-ph. https://arxiv.org/list/hep-ph/new
[1/2]:
- EUSO-SPB2 sensitivity to macroscopic dark matter
Thomas C. Paul, Sarah T. Reese, Luis A. Anchordoqui, Angela V. Olinto

Beyond CPL: Evidence for dynamical dark energy in three-parameter models
Sonej Alam, Md. Wali Hossain
https://arxiv.org/abs/2510.03779 https://arxiv.org/pd…

Beyond CPL: Evidence for dynamical dark energy in three-parameter models
We introduce three-parameter extensions of the two-parameter minimal Akhtar-Hossain (mAH) parametrization, termed modified minimal AH (MmAH1,2), which provide greater flexibility in the dynamics of dark energy. These models are compared with $Λ$CDM, $w$CDM, mAH, CPL, and three-parameter CPL (CPL-$w_{\rm b}$) using a joint data set of the CMB compressed likelihood, DESI DR2, Pantheon$+$ supernovae, $H(z)$ measurements, and redshift-space distortions. While the common cosmological parameters rem…

Replaced article(s) found for hep-ex. https://arxiv.org/list/hep-ex/new
[1/1]:
- Sensitivity of an Early Dark Matter Search using the Electromagnetic Calorimeter as a Target for ...
LDMX Collaboration, et al.

Cosmology in the Hoyle Narlikar gravity
J. K. Singh, Sonal Aggarwal, Shaily, Hamid Shabani
https://arxiv.org/abs/2510.11762 https://arxiv.org/pdf/2510.117…

Cosmology in the Hoyle Narlikar gravity
In this paper, we study the late time cosmic acceleration of the Quintessence model within the framework of Hoyle Narlikar Gravity, consisting of a creation field. Using the Hubble tension as a function of the density parameter for matter, the density parameter for radiation, and the density parameter for dark energy in the covariant formulation, we find the gravitational field equations in the spatially flat, homogeneous, and isotropic spacetime to examine the dynamical mechanism that leads to…

Expanding the Landscape of Exotic Muon Decays
Admir Greljo, Ajdin Palavri\'c, Mirsad Tunja, Jure Zupan
https://arxiv.org/abs/2510.08674 https://arxiv.o…

Expanding the Landscape of Exotic Muon Decays
We chart new-physics models that produce exotic, high-multiplicity muon decays featuring prompt or displaced $e^+e^-$ pairs and/or photons, with or without missing energy, such as $μ\to 5e$, $μ\to 7e$, etc. Starting from an effective-field-theory perspective, we estimate the reach on the ultraviolet scale and identify conditions under which lower-multiplicity modes are suppressed or occur at comparable rates. We then construct explicit realizations in minimal dark-sector models with light, fe…

The dark sector of the Universe as a scalar field in Horndeski Gravity
M. S. Oliveira, F. A. Brito, J. A. V. Campos
https://arxiv.org/abs/2510.08459 https://

The dark sector of the Universe as a scalar field in Horndeski Gravity
In the present work, we study a subclass of Horndeski gravity characterized by a non-minimal derivative coupling between a scalar field and the Einstein tensor, as a possible alternative to alleviate the observational tension associated with estimates of the Hubble constant $H_{0}$. Two scenarios within a flat FRW spacetime were considered. In the first case, the scalar field mimics cold dark matter, whereas in the second case, it acts as dark energy. We derive the dynamical equations and perfo…

Crosslisted article(s) found for hep-ex. https://arxiv.org/list/hep-ex/new
[1/1]:
- Intrinsically Quantum Effects of Axion Dark Matter are Undetectable
Yunjia Bao, Dhong Yeon Cheong, Nicholas L. Rodd, Joey Takach, Lian-Tao Wang, Kevin Zhou

Euclid preparation. Cosmology Likelihood for Observables in Euclid (CLOE). 5. Extensions beyond the standard modelling of theoretical probes and systematic effects
Collaboration, Goh, Nouri-Zonoz, Pamuk, Ballardini, Bose, Ca\~nas-Herrera, Casas, Franco-Abell\'an, Ili\'c, Keil, Kunz, Le Brun, Lepori, Martinelli, Sakr, Sorrenti, Teixeira, Tutusaus, Blot, Bonici, Bonvin, Camera, Cardone, Carrilho, Di Domizio, Durrer, Farrens, Beauchamps, Joudaki, Moretti, Pezzotta, S\'anchez, …

Euclid preparation. Cosmology Likelihood for Observables in Euclid (CLOE). 5. Extensions beyond the standard modelling of theoretical probes and systematic effects
Euclid is expected to establish new state-of-the-art constraints on extensions beyond the standard LCDM cosmological model by measuring the positions and shapes of billions of galaxies. Specifically, its goal is to shed light on the nature of dark matter and dark energy. Achieving this requires developing and validating advanced statistical tools and theoretical prediction software capable of testing extensions of the LCDM model. In this work, we describe how the Euclid likelihood pipeline, Cos…

Probing cosmic curvature with Alcock-Paczynski data
Yungui Gong, Qing Gao, Xuchen Lu, Zhu Yi
https://arxiv.org/abs/2510.11555 https://arxiv.org/pdf/2510.11…

Probing cosmic curvature with Alcock-Paczynski data
The Alcock-Paczynski (AP) parameter $F_{AP}$ is independent of the sound horizon $r_d$, making the Dark Energy Spectroscopic Instrument (DESI) baryon acoustic oscillation (BAO) AP measurements particularly well suited for cosmological applications. We propose a novel null test of cosmic curvature tailored to DESI BAO data that combines $F_{AP}$ with the ratios $D_V'/D_V$ or $D_M'/D_M$. This null test can also be performed using a joint dataset of DESI BAO and type Ia supernova (SNe Ia) observat…

Ly{\alpha} Intensity Mapping in HETDEX: Galaxy-Ly{\alpha} Intensity Cross-Power Spectrum
Maja Lujan Niemeyer, Eiichiro Komatsu, Jos\'e Luis Bernal, Chris Byrohl, Robin Ciardullo, Olivia Curtis, Daniel J. Farrow, Steven L. Finkelstein, Karl Gebhardt, Caryl Gronwall, Gary J. Hill, Matt J. Jarvis, Donghui Jeong, Erin Mentuch Cooper, Deeshani Mitra, Shiro Mukae, Julian B. Mu\~noz, Masami Ouchi, Shun Saito, Donald P. Schneider, Lutz Wisotzki

Lyα Intensity Mapping in HETDEX: Galaxy-Lyα Intensity Cross-Power Spectrum
We present a measurement of the Lyman-$α$ (Ly$α$) intensity mapping power spectrum from the Hobby-Eberly Telescope Dark Energy Experiment (HETDEX). We measure the cross-power spectrum of the Ly$α$ intensity and Ly$α$-emitting galaxies (LAEs) in a redshift range of $1.9 < z < 3.5$. We calculate the intensity from HETDEX spectra that do not contain any detected LAEs above a signal-to-noise ratio of $5.5$. To produce a power spectrum model and its covariance matrix, we simulate the data using …

Extending CSST Emulator to post-DESI era
Zhao Chen, Yu Yu
https://arxiv.org/abs/2510.09503 https://arxiv.org/pdf/2510.09503

Extending CSST Emulator to post-DESI era
The recent DESI BAO measurements have revealed a potential deviation from a cosmological constant, suggesting a dynamic nature of dark energy. To rigorously test this result, complementary probes such as weak gravitational lensing are crucial, demanding highly accurate and efficient predictions of the nonlinear matter power spectrum within the $w_0w_a$CDM framework. However, most existing emulators fail to cover the full parameter posterior from DESI DR2+CMB constraints in the $w_0\mbox{-}w_a$ …

Replaced article(s) found for astro-ph.CO. https://arxiv.org/list/astro-ph.CO/new
[2/2]:
- Imprints of screened dark energy on nonlocal quantum correlations
Fabiano Feleppa, Gaetano Lambiase, Sunny Vagnozzi

Replaced article(s) found for astro-ph.CO. https://arxiv.org/list/astro-ph.CO/new
[1/2]:
- Markov Walk Exploration of Model Spaces: Bayesian Selection of Dark Energy Models with Supernovae
Benedikt Schosser, Tobias R\"ospel, Bjoern Malte Schaefer

Islands in Simulated Cosmos: Probing the Hubble Flow around Groups and Clusters
David Benisty, Antonino Del Popolo
https://arxiv.org/abs/2510.11382 https://

Islands in Simulated Cosmos: Probing the Hubble Flow around Groups and Clusters
The local Hubble flow offers a powerful laboratory to study the interplay between cosmic expansion and gravitational dynamics. On large scales, galaxy velocities follow Hubble's law, but within groups and clusters local gravitational effects introduce significant departures from linearity. Using the IllustrisTNG cosmological simulations, we investigate whether dark energy leaves detectable imprints on the local velocity-radius relation. We model the kinematics with extensions of the Lemaitre-To…

Anchoring the Universe with Characteristic Redshifts using Raychaudhuri Equation Informed Reconstruction Algorithm (REIRA)
Shibendu Gupta Choudhury, Purba Mukherjee, Anjan Ananda Sen
https://arxiv.org/abs/2510.09602

Anchoring the Universe with Characteristic Redshifts using Raychaudhuri Equation Informed Reconstruction Algorithm (REIRA)
We study the robustness and physical implications of a set of characteristic redshifts that capture key features of the late-time Universe. Using both model-independent reconstructions as well as different dark energy (DE) parameterizations, we show that these redshifts remain stable across cosmological models and reconstruction algorithm, making them reliable geometric anchors of the expansion history. Moreover, the Alcock-Paczyński corrections at these redshift anchors are found to be unity …

Detection of supernova magnitude fluctuations induced by large-scale structure
A. Nguyen, C. Blake, R. J. Turner, V. Aronica, J. Bautista, J. Aguilar, S. Ahlen, S. BenZvi, D. Bianchi, D. Brooks, A. Carr, T. Claybaugh, A. Cuceu, A. de la Macorra, B. Dey, P. Doel, K. Douglass, S. Ferraro, J. E. Forero-Romero, E. Gazta\~naga, S. Gontcho A Gontcho, G. Gutierrez, J. Guy, K. Honscheid, C. Howlett, D. Huterer, M. Ishak, R. Joyce, R. Kehoe, A. G. Kim, A. Kremin, O. Lahav, M. Landriau, L. Le Gu…

Detection of supernova magnitude fluctuations induced by large-scale structure
The peculiar velocities of supernovae and their host galaxies are correlated with the large-scale structure of the Universe, and can be used to constrain the growth rate of structure and test the cosmological model. In this work, we measure the correlation statistics of the large-scale structure traced by the Dark Energy Spectroscopic Instrument Bright Galaxy Survey Data Release 1 sample, and magnitude fluctuations of type Ia supernova from the Pantheon+ compilation across redshifts z < 0.1. We…

Probing departures from $\Lambda$CDM by late-time datasets
Himanshu Chaudhary, Vipin Kumar Sharma, Salvatore Capozziello, G. Mustafa
https://arxiv.org/abs/2510.08339 https://

Probing departures from $Λ$CDM by late-time datasets
Observational data play a pivotal role in identifying cosmological models that are both theoretically consistent and empirically viable. In this work, we investigate whether the standard $Λ$CDM model exhibits significant departure with current late time datasets, including Cosmic Chronometers, Baryon Acoustic Oscillations from DESI DR2, and various Type Ia supernova compilations (Pantheon$^+$, DES-SN5Y, Union3). We analyze several dynamical dark energy models, including $ω$CDM, o$ω$CDM, $ω_…

Validation of the DESI-DR1 3x2-pt analysis: scale cut and shear ratio tests
N. Emas, A. Porredon, C. Blake, J. DeRose, J. Aguilar, S. Ahlen, D. Bianchi, D. Brooks, F. J. Castander, T. Claybaugh, A. Cuceu, A. de la Macorra, A. Dey, B. Dey, P. Doel, S. Ferraro, J. E. Forero-Romero, C. Garcia-Quintero, E. Gazta\~naga, S. Gontcho A Gontcho, G. Gutierrez, S. Heydenreich, K. Honscheid, D. Huterer, M. Ishak, S. Joudaki, R. Joyce, E. Jullo, S. Juneau, R. Kehoe, D. Kirkby, T. Kisner, A. Kremin,…

Validation of the DESI-DR1 3x2-pt analysis: scale cut and shear ratio tests
Combined survey analyses of galaxy clustering and weak gravitational lensing (3x2-pt studies) will allow new and accurate tests of the standard cosmological model. However, careful validation is necessary to ensure that these cosmological constraints are not biased by uncertainties associated with the modelling of astrophysical or systematic effects. In this study we validate the combined 3x2-pt analysis of the Dark Energy Spectroscopic Instrument Data Release 1 (DESI-DR1) spectroscopic galaxy …