Tootfinder

It's been bothering me for a while, so I created a Racket extension to refer to variables by position: eg,
(define hypotenuse
(lambda 2
(sqrt ( (square $0)
(square $1)))))
Why not. What fun. No more variable name choice paralysis! 🤣
https://github.com/shriram/lambda-n

GitHub - shriram/lambda-n: the lambda-n language
the lambda-n language. Contribute to shriram/lambda-n development by creating an account on GitHub.

Rectangular representations and $\lambda$-independence of algebraic monodromy groups
Chun-Yin Hui, Wonwoong Lee
https://arxiv.org/abs/2506.21941 https://…

Rectangular representations and $λ$-independence of algebraic monodromy groups
Let $\mathfrak g$ be a complex semisimple Lie algebra. We define what it means for a finite dimensional representation of $\mathfrak g$ to be rectangular and completely classify faithful rectangular representations. As an application, we obtain new $λ$-independence results on the algebraic monodromy groups of compatible systems of $λ$-adic Galois representations of number fields.

SCET sum rules for $\Lambda_b \to \Lambda \ell^ \ell^-$, $\Lambda \gamma$ decays
Long-Shun Lu, Cai-Dian L\"u, Yue-Long Shen, Yan-Bing Wei
https://arxiv.org/abs/2506.21419

SCET sum rules for $Λ_b$ $\rightarrow$ $Λ\ell^+\ell^-$, $Λγ$ decays
We construct light-cone sum rules for various types of effective form factors in the $Λ_b \to Λ\ell^+\ell^-$ and $Λ_b \to Λγ$ decays by analyzing vacuum-to-$Λ_b$ (or $γ^\ast$-to-$Λ_b$) correlation functions with the light $Λ$-baryon interpolating current. These form factors, defined via hadronic matrix elements within soft-collinear effective theory (SCET), enter the next-to-leading-power QCD factorization formulas for large-recoil transitions. Implementing the perturbative matching fr…

A Quantum-Control Lambda-Calculus with Multiple Measurement Bases
Alejandro D\'iaz-Caro, Nicolas A. Monzon
https://arxiv.org/abs/2506.16244 https://

A Quantum-Control Lambda-Calculus with Multiple Measurement Bases
We introduce Lambda-SX, a typed quantum lambda-calculus that supports multiple measurement bases. By tracking duplicability relative to arbitrary bases within the type system, Lambda-SX enables more flexible control and compositional reasoning about measurements. We formalise its syntax, typing rules, subtyping, and operational semantics, and establish its key meta-theoretical properties. This proof-of-concept shows that support for multiple bases can be coherently integrated into the type disc…

from my link log —
The Epic Verse calculus: a core calculus for functional logic programming.
https://simon.peytonjones.org/verse-calculus/
saved 2025-06-12

Measurement of $\Lambda$ Polarization in the $\pi^{-}p \to K^{0} \Lambda$ Reaction at $p_{\pi^{-}}=1.33$ GeV/$c$ toward a New $\Lambda p$ Scattering Experiment
PARC E40 Collaboration, T. Sakao, K. Miwa, J. K. Ahn, Y. Akazawa, T. Aramaki, S. Ashikaga, S. Callier, N. Chiga, S. W. Choi, H. Ekawa, P. Evtoukhovitch, N. Fujioka, M. Fujita, T. Gogami, T. Harada, S. Hasegawa, S. H. Hayakawa, R. Honda, S. Hoshino, K. Hosomi, M. Ichikawa, Y. Ichikawa, M. Ieiri, M. Ikeda, K. Imai, Y. Ishikawa, S.…

Measurement of $Λ$ Polarization in the $π^{-}p \to K^{0} Λ$ Reaction at $p_{π^{-}}=1.33$ GeV/$c$ toward a New $Λp$ Scattering Experiment
This paper presents high-precision experimental data of the polarization of the $Λ$ hyperon in the $π^{-}p \to K^{0} Λ$ reaction, measured in the angular range $0.6<\cos θ^{CM}_{K0}<1.0$ with a fine bin width of $d\cos θ^{CM}_{K0}=0.05$. The data were obtained from the J-PARC E40 experiment at the K1.8 beamline in the J-PARC Hadron Experimental Facility. The observed average polarization of $Λ$ in the range $0.60<\cos θ^{CM}_{K0}<0.85$ was $0.932 \pm 0.058 \,(\text{stat}) \pm 0.028 \,(\t…

Soundtoys Donating 100% Of Sales On June 25 & 26 To Supporting LGBTQIA Civil Rights https://www.synthtopia.com/content/2025/06/25/soundtoys-donating-100-of-sales-on-june-25-26-to-supporting-lgbtqia-civi…

Soundtoys Donating 100% Of Sales On June 25 & 26 To Supporting LGBTQIA+ Civil Rights
Customers who purchase any Soundtoys plug-in, bundle, or upgrade during the campaign period will help support Lambda Legal’s legal advocacy, public policy work, and impact litigation efforts across…

This https://arxiv.org/abs/2406.13539 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_qfi…

Robust Lambda-quantiles and extremal distributions
In this paper, we investigate the robust models for $Λ$-quantiles with partial information regarding the loss distribution, where $Λ$-quantiles extend the classical quantiles by replacing the fixed probability level with a probability/loss function $Λ$. We find that, under some assumptions, the robust $Λ$-quantiles equal the $Λ$-quantiles of the extremal distributions. This finding allows us to obtain the robust $Λ$-quantiles by applying the results of robust quantiles in the literature. …

from my link log —
A multivalued language with a dependent type system. (A precursor to Epic Verse.)
https://www.leafpetersen.com/leaf/publications/dtp2013/lambda-aleph-overview.pdf
saved 2025-06-12

Soundtoys Donating 100% Of Sales On June 25 & 26 To Supporting LGBTQIA Civil Rights https://www.synthtopia.com/content/2025/06

Soundtoys Donating 100% Of Sales On June 25 & 26 To Supporting LGBTQIA+ Civil Rights
Customers who purchase any Soundtoys plug-in, bundle, or upgrade during the campaign period will help support Lambda Legal’s legal advocacy, public policy work, and impact litigation efforts across…

Precise Measurement of the $\Lambda$ Electric Dipole Moment through the Entangled Strange Baryon-Antibaryon System
BESIII Collaboration
https://arxiv.org/abs/2506.19180

Precise Measurement of the $Λ$ Electric Dipole Moment through the Entangled Strange Baryon-Antibaryon System
The dominance of matter over antimatter in the universe has consistently driven the pursuit of new physics beyond the Standard Model that violates charge-parity symmetry. Unlike the well-constrained electrons and neutrons, strange baryons (hyperons) remain a largely unexplored territory, in which interactions between hyperons and particles from new physics could induce a non-trivial electric dipole moment (EDM). However, direct measurements of hyperon EDMs through spin precession are highly cha…

from my link log —
Dependent types and program equivalence.
https://www.seas.upenn.edu/~sweirich/papers/popl10-lambda-eek.pdf
saved 2025-06-10

Comparison of $R_h=ct$ and $\Lambda$CDM using DESI DR1 measurements
Kunj Panchal, Shantanu Desai
https://arxiv.org/abs/2506.18445 https://

Comparison of $R_h=ct$ and $Λ$CDM using DESI DR1 measurements
We use DESI DR1 BAO measurements of the ratio of tranvserse comoving distance to Hubble distance in order to test the compatibility of $R_h=ct$ over flat $Λ$CDM. For this purpose, we used Bayesian model selection to evaluate the efficacy of these models given the observed data. When we consider the BAO measurements up to redshift of 1.3, both models are equally favored. However, when we consider the Lyman-$α$ QSO measurement at redshift of 2.33, we find Bayes factors of greater than 100 for f…

Characteristic equations of linearized $\lambda R$ gravity
J. Aldair Pantoja-Gonzalez (Puebla U., Inst. Fis.), D. Vanessa Castro-Luna (Puebla U., Inst. Fis.), Alberto Escalante (Puebla U., Inst. Fis.)
https://arxiv.org/abs/2506.16603

Characteristic equations of linearized $λR$ gravity
A detailed Hamilton-Jacobi analysis for linearized $λR$ gravity is developed. The model is constructed by rewriting linearized gravity in terms of a parameter $λ$ and new variables. The set of all hamiltonians is identified successfully, and the fundamental differential is established. The non-involutive hamiltonians are eliminated, and the Hamilton-Jacobi generalized brackets are calculated. Such brackets are used to report the characteristic equations, and the counting of the number of degr…

On {\lambda}-Cent-Dians and Generalized-Center for Network Design: Formulations and Algorithms
V\'ictor Bucarey, Natividad Gonz\'alez-Blanco, Martine Labb\'e, Juan A. Mesa
https://arxiv.org/abs/2506.14839

On λ-Cent-Dians and Generalized-Center for Network Design: Formulations and Algorithms
In this paper, we study the $λ$-centdian problem in the domain of Network Design. The focus is on designing a sub-network within a given underlying network while adhering to a budget constraint. This sub-network is intended to efficiently serve a collection of origin/destination demand pairs. We extend the work presented in \cite{bucarey2024on}, providing an algorithmic perspective on the generalized $λ$-centdian problem. In particular, we provide a mathematical formulation for $λ\geq 0$ and…

Replaced article(s) found for cs.PL. https://arxiv.org/list/cs.PL/new
[1/1]:
Opportunistically Parallel Lambda Calculus
https://

Constraining parameters of spinor field dark energy: An alternative to $\Lambda$CDM model under the spherically symmetric FLRW space-time
Bijan Saha, Mahendra Goray
https://arxiv.org/abs/2506.16323

Constraining parameters of spinor field dark energy: An alternative to $Λ$CDM model under the spherically symmetric FLRW space-time
This study constrains the cosmological parameters within the scope of a spherically symmetric FLRW cosmological model, the role of a nonlinear spinor field in the universe's evolution. To test this approach, we incorporate the recent Cosmic chronometers, Supernova, and Sloan Digital Sky Survey data. It is found that if spherical coordinates give the FLRW model, the energy-momentum tensor (EMT) of the spinor field possesses nontrivial non-diagonal components. These non-diagonal components of EMT…

Unraveling the structure of $\Lambda$ hyperons with polarized $\Lambda\bar{\Lambda}$ pairs
The BESIII Collaboration
https://arxiv.org/abs/2506.08072 https:…

Unraveling the structure of $Λ$ hyperons with polarized $Λ\barΛ$ pairs
With data collected in a dedicated off-resonance scan within the center-of-mass energy range of 2.3864$-$3.0800 GeV, the BESIII collaboration provides the first complete energy-dependent measurements of the $Λ$ electromagnetic form factors in the time-like region. By combining double-tag and single-tag events from the $e^+e^- \to Λ\barΛ \to pπ^-\bar{p}π^+$ reaction, we achieve a complete decomposition of the spin structure of the reaction at five energy points, with high statistical and sy…

HeII emitters in the cosmic noon and beyond. Characterising the HeII {\lambda}1640 emission with MUSE and JWST/NIRSpec
R. Gonz'alez-D'iaz, J. M. V\'ilchez, C. Kehrig, I. del Moral-Castro, J. Iglesias-P\'aramo
https://arxiv.org/abs/2506.11685

HeII emitters in the cosmic noon and beyond. Characterising the HeII λ1640 emission with MUSE and JWST/NIRSpec
The study of high-redshift galaxies provides critical insights into the early stages of cosmic evolution, particularly during the so-called 'cosmic noon', when star formation activity reached its peak. Within this context, the origin of the nebular emission remains an open question. In this work, we conduct a systematic, multi-wavelength investigation of a sample of z ~ 2-4 emitters from the MUSE Hubble Ultra Deep Field surveys, utilising both MUSE and JWST/NIRSpec data and extending the sample…

The near infrared airglow continuum conundrum. Constraints for ground-based faint object spectroscopy
J. K. M. Viuho (Cosmic Dawn Center, Niels Bohr Institute, University of Copenhagen, Jagtvej 155A, DK-2200, Copenhagen N, Denmark, Nordic Optical Telescope, Rambla Jose Ana Fernandez Perez 7, ES-38711 Brena Baja, Spain, Department of Physics and Astronomy, Aarhus University, Munkegade 120, DK-8000 Aarhus C, Denmark), J. P. U. Fynbo (Cosmic Dawn Center, Niels Bohr Institute, University of Copenhagen, Jagtvej 155A, DK-2200, Copenhagen N, Denmark), M. I. Andersen (Cosmic Dawn Center, Niels Bohr Institute, University of Copenhagen, Jagtvej 155A, DK-2200, Copenhagen N, Denmark)
#toXiv_bot_toot

Constraining Dark Matter Parameters in the Lambda-CDM Framework: A Bayesian Comparison of Planck and DES Constraints
Manjeet Kunwar, Nabin Bhusal, Manil Khatiwada, Niraj Dhital
https://arxiv.org/abs/2506.07133

Constraining Dark Matter Parameters in the Lambda-CDM Framework: A Bayesian Comparison of Planck and DES Constraints
We present a Bayesian analysis of cosmological parameter constraints from early- and late-universe observations, focusing on the matter density parameter ($Ω_m$) and the amplitude of matter fluctuations ($σ_8$) within the $Λ$CDM framework. Using data from the Planck 2018 satellite mission and the Dark Energy Survey (DES) Year 3, we compute theoretical predictions for angular and matter power spectra via Boltzmann solvers and perform Markov Chain Monte Carlo (MCMC) sampling using the \texttt{…

Electromagnetic probes revealing the inner structure of the $\Lambda_c(2940)$
Ping Chen, Zi-Le Zhang, Yu Zhuge
https://arxiv.org/abs/2506.15428 https://

Electromagnetic probes revealing the inner structure of the $Λ_c(2940)$
The $Λ_c(2940)$, an open-charm baryon discovered in 2006, has sparked interest due to its ``low mass puzzle'', paralleling the $X(3872)$ in the charmoniumlike sector. Both states challenge conventional hadronic interpretations, with the $X(3872)$ understood as a $D^*\bar{D}$ molecular state and the $Λ_c(2940)$ hypothesized as a $D^*N$ molecular state. This work investigates the radiative decay modes $Λ_c(2940) \to Λ_c(2286)γ$, $Λ_c(2940) \to Λ_c(2595)γ$, and $Λ_c(2940) \to Λ_c(2765)γ…

Measurement of the branching fractions of the Cabibbo-favored decays $\Lambda_{c}^{ }\to\Lambda K_{S}^{0}K^{ }$ and $\Lambda_{c}^{ }\to\Xi^{0}K_{S}^{0}\pi^{ }$ and search for $\Lambda_{c}^{ }\to\Sigma^{0} K_{S}^{0}K^{ }$
BESIII Collaboration, et al.
https://arxiv.org/abs/2506.02969

Measurement of the branching fractions of the Cabibbo-favored decays $Λ_{c}^{+}\toΛK_{S}^{0}K^{+}$ and $Λ_{c}^{+}\toΞ^{0}K_{S}^{0}π^{+}$ and search for $Λ_{c}^{+}\toΣ^{0} K_{S}^{0}K^{+}$
Based on $e^{+}e^{-}$ collision data corresponding to an integrated luminosity of about 4.5 fb$^{-1}$ collected at center-of-mass energies between 4599.53 MeV and 4698.82 MeV with the BESIII detector, the absolute branching fraction of the Cabibbo-favored decay $Λ_{c}^{+}\toΛK_{S}^{0}K^{+}$ is measured to be $(3.12\pm0.46\pm0.15)\times10^{-3}$. Combined with a previous measurement from the BESIII Collaboration, the branching fraction of the decay $Λ_{c}^{+}\toΛK_{S}^{0}K^{+}$ is calculated …

Encoding call-by-push-value in the pi-calculus
Benjamin Bennetzen, Nikolaj Rossander Kristensen, Peter Buus Steffensen
https://arxiv.org/abs/2506.10584 htt…

Encoding call-by-push-value in the pi-calculus
In this report we define an encoding of Levys call-by-push-value lambda-calculus (CBPV) in the pi-calculus, and prove that our encoding is both sound and complete. We present informal (by-hand) proofs of soundness, completeness, and all required lemmas. The encoding is specialized to the internal pi-calculus (pi-i-calculus) to circumvent certain challenges associated with using de Bruijn index in a formalization, and it also helps with bisimulation as early-, late- and open-bisimulation coincid…

Constraints on $\Lambda N$ Effective Interactions from Mirror Hypernuclei in a Deformed Relativistic Hartree-Bogoliubov Model
Yu-Ting Rong, Dan Yang, Cheng-Jun Xia, Ting-Ting Sun
https://arxiv.org/abs/2506.13499

Constraints on $ΛN$ Effective Interactions from Mirror Hypernuclei in a Deformed Relativistic Hartree-Bogoliubov Model
We investigate the ground-state properties of four mirror hypernuclei pairs--$^{10}_Λ$Be-$^{10}_Λ$B, $^{12}_Λ$B-$^{12}_Λ$C, $^{16}_Λ$N-$^{16}_Λ$O, and $^{40}_Λ$K-$^{40}_Λ$Ca--within the deformed relativistic Hartree-Bogoliubov framework, analyzing their connection to $ΛN$ effective interactions. Systematic calculations with eight distinct effective interactions reveal linear correlations between mirror hypernuclei in $Λ$ separation energies and charge radii. The charge symmetry breaki…

Congruence conditions for the mod $\lambda$ values of the Fourier coefficients of classical eigenforms
Michael A. Daas
https://arxiv.org/abs/2506.08865 htt…

Congruence conditions for the mod $λ$ values of the Fourier coefficients of classical eigenforms
We classify all instances of the condition $a_{p}(f) \equiv x \bmod λ$ being related to a congruence on the prime $p$, where $a_{p}(f)$ denotes the $p$th Fourier coefficient of a classical normalised cuspidal eigenform $f$ and $λ$ is a prime in the number field generated by the Fourier coefficients of $f$. This classification is done in terms of the (projective) image of the mod $λ$ Galois representation associated with $f$ and extends work by Swinnerton-Dyer. We highlight that for $x = 0$, …

On Strong Markushevich bases $\{t^{\lambda_n}\}_{n=1}^{\infty}$ in their closed span in $L^2 (0, 1)$ and characterizing a subspace of $H^2 (\mathbb{D})$
Elias Zikkos
https://arxiv.org/abs/2505.24761

On Strong Markushevich bases $\{t^{λ_n}\}_{n=1}^{\infty}$ in their closed span in $L^2 (0, 1)$ and characterizing a subspace of $H^2 (\mathbb{D})$
Let $Λ=\{λ_n\}_{n=1}^{\infty}$ be a strictly increasing sequence of positive real numbers such that $\sum_{n=1}^{\infty}\frac{1}{λ_n}<\infty$ and $\inf(λ_{n+1}-λ_n)>0$. We investigate properties of the closed span of the system $\{t^{λ_n}\}_{n=1}^{\infty}$ in $L^2 (0,1)$, denoted by $\overline{M_Λ}$, and of the unique biorthogonal family $\{r_n (t)\}_{n=1}^{\infty}$ to the system $\{t^{λ_n}\}_{n=1}^{\infty}$ in $\overline{M_Λ}$. We show that the system $\{t^{λ_n}\}_{n=1}^{\infty}$ is …

Revisiting $\Lambda$CDM extensions in light of re-analyzed CMB data
Jacobo Asorey, Javier de Cruz P\'erez
https://arxiv.org/abs/2506.13537 https://

Revisiting $Λ$CDM extensions in light of re-analyzed CMB data
In the last years with the increasing precision in cosmological observations we have been able to establish an standard model of cosmology, the so-called $Λ$CDM, but also find some tensions between cosmological probes that are difficult to explain within the context of this model. We tested several phenomenological extensions of the $Λ$CDM with the newest datasets from the chain CMB+BAO+SNIa, to see whether they are able to alleviate the aforementioned tensions. We find that when the updated …

Dark energy and QCD instanton vacuum in Friedmann-Lemaitre-Robertson-Walker universe
M. M. Musakhanov
https://arxiv.org/abs/2506.13128 https://

Dark energy and QCD instanton vacuum in Friedmann-Lemaitre-Robertson-Walker universe
The standard model of the universe, lambdaCDM, is based on the Friedmann-Lemaitre-Robertson-Walker metric with flat 3-dim coordinate space and Friedmann equations. The cosmological constant lambda is providing the cancellations of the matter fields contributions in the flat space. The dynamical dark energy is appearing on over of the vacuum energy of matter fields at the flat space. Within the Standard Model the gluon Yang-Mills (YM) fields are playing the special role since specific properties…

GNHeII J1236 6215: A He II $\lambda$1640 emitting and potentially LyC leaking galaxy at $z$ = 2.9803 unveiled through JWST & Keck observations
Chayan Mondal, Kanak Saha, Anshuman Borgohain, Brent M. Smith, Rogier A. Windhorst, Naveen Reddy, Chian-Chou Chen, Keiichi Umetsu, Rolf A. Jansen
https://arxiv.org/abs/2506.06831

GNHeII J1236+6215: A He II $λ$1640 emitting and potentially LyC leaking galaxy at $z$ = 2.9803 unveiled through JWST & Keck observations
He II $λ$1640 emission in galaxies indicates the presence of sources that produce extreme ionizing photons. Here, we report the discovery of a He II $λ$1640 emitting galaxy, GNHeII J1236+6215, at $z=$ 2.9803 in the GOODS-north field. We use photometry in 17 wavebands from near-UV to infrared to characterize the galaxy SED and combine Keck LRIS and JWST NIRSpec spectra to identify 15 emission lines including He II $λ$1640. We infer that the He$^+$ ionization in the galaxy could be driven by s…

This https://arxiv.org/abs/2503.09831 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csLO_…

Strong normalization through idempotent intersection types: a new syntactical approach
It is well-known that intersection type assignment systems can be used to characterize strong normalization (SN). Typical proofs that typable lambda-terms are SN in these systems rely on semantical techniques. In this work, we study $Λ_\cap^e$, a variant of Coppo and Dezani's (Curry-style) intersection type system, and we propose a syntactical proof of strong normalization for it. We first design $Λ_\cap^i$, a Church-style version, in which terms closely correspond to typing derivations. Then…

Mass inflation from rough initial data for the spherically symmetric Einstein-Maxwell-scalar field system with $\Lambda$
Flavio Rossetti
https://arxiv.org/abs/2506.08075

Mass inflation from rough initial data for the spherically symmetric Einstein-Maxwell-scalar field system with $Λ$
Recent rigorous results on black hole interiors clearly suggest that the strong cosmic censorship conjecture fails in its most fundamental, i.e. weak, formulation: violations are expected for a class of spherically symmetric charged black holes in the presence of a positive cosmological constant near extremality. These results require sufficiently regular solutions. Conversely, when non-smooth, finite-energy initial data are prescribed for linear waves propagating on a fixed black hole backgrou…

Equidistribution and arithmetic $\Lambda$-distributions
Matthew Bertucci, Sean Howe
https://arxiv.org/abs/2505.24748 https://arxiv.or…

Equidistribution and arithmetic $Λ$-distributions
We formulate an abstract notion of equidistribution for families of $λ$-probability spaces parameterized by admissible $\mathbb{Z}$-sets. Under the assumption of equidistribution, we show that the $σ$-moment generating functions of certain infinite sums of random variables can be computed as motivic Euler products. Combining this result with earlier generalizations of Poonen's sieve, we compute the asymptotic $Λ$-distributions for several natural families of function field $L$-functions and …

This https://arxiv.org/abs/2502.09951 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hepe…

Search for Pcs(4459) and Pcs(4338) in Upsilon(1S,2S) inclusive decays at Belle
Using data samples of 102 million Upsilon(1S) events and 158 million Upsilon(2S) events collected by the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider, we search for [udsccbar] pentaquark states decaying to Jpsi Lambda. Using the first observations of Upsilon(1S, 2S) inclusive decays to Jpsi Lambda, we find evidence of the P_ccbars(4459)0 state with a local significance of 3.3 standard deviations, including statistical and systematic uncertainties. We measure the mass and width…

$CP$ violation of two-body hadronic $\Lambda_b$ decays in the PQCD approach
Jia-Jie Han, Ji-Xin Yu, Ya Li, Hsiang-nan Li, Jian-Peng Wang, Zhen-Jun Xiao, Fu-Sheng Yu
https://arxiv.org/abs/2506.07197

$CP$ violation of two-body hadronic $Λ_b$ decays in the PQCD approach
We systematically investigate the $CP$-averaged branching ratios and $CP$ violations (CPVs) for the two-body hadronic decays $Λ_b\to ph$, where $h$ runs through the mesons $π^-$, $ρ^-$, $a_1^-(1260)$, $K^-$, $K^{\ast -}$, $K_1^-(1270)$ and $K_1^-(1400)$, in the perturbative QCD approach to order $α_s^2$ in the strong coupling. Various topological amplitudes are obtained by incorporating subleading-twist hadron distribution amplitudes, which exhibit reasonable hierarchical patterns, sizable …

Variable Modified Newtonian Mechanics VII: Supermassive Black Hole at very high redshift
James C. C. Wong
https://arxiv.org/abs/2506.05423 https://

Variable Modified Newtonian Mechanics VII: Supermassive Black Hole at very high redshift
Observations of Supermassive Black Hole (SMBH) at very high redshift hosted by massive galaxy provide a challenge to the SMBH and massive galaxy formation models which are predicated on the Lambda CDM model that predicts a Hubble constant currently in tension with late time observations. In a gravitational system with two asymptotic solutions such as a central mass in an expanding cosmological background or an expanding background with radiation and baryons, we find that a particle's free falli…

This https://arxiv.org/abs/2504.14609 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

Resolving the S8 tension with the Lambda Prime ($Λ'$) model
The $S_8$ parameter, which quantifies the amplitude of matter fluctuations on scales of $8h^{-1}$ Mpc, has been a source of tension between weak lensing surveys (e.g. KiDS, DES, HSC) and the Planck Cosmic Microwave Background (CMB) measurements. This discrepancy challenges the standard $Λ$CDM model and has become one of the most significant tensions in modern cosmology. The ${Λ'}$ model offers a potential resolution by introducing modifications to the cosmic growth history through alterations…

The Intrinsic and Extrinsic Hierarchy Problems
James D. Wells
https://arxiv.org/abs/2506.05472 https://arxiv.org/pdf/2506.05472

The Intrinsic and Extrinsic Hierarchy Problems
The Hierarchy Problem of elementary particle physics can be divided into two separate problems: the Intrinsic and Extrinsic Hierarchy Problems. The Intrinsic Hierarchy Problem (IHP) arises when the Wilsonian renormalization group induces a large Lambda_UV cutoff dependence on a much lighter scalar mass, creating a large finetuning. The Extrinsic Hierarchy Problem (EHP) arises when the IR theory is augmented with generically assumed extra states and interactions in the UV, making the resulting I…

The Roman View of Strong Gravitational Lenses
Bryce Wedig, Tansu Daylan, Simon Birrer, Francis-Yan Cyr-Racine, Cora Dvorkin, Douglas P. Finkbeiner, Alan Huang, Xiaosheng Huang, Rahul Karthik, Narayan Khadka, Priyamvada Natarajan, Anna M. Nierenberg, Annika H. G. Peter, Justin D. R. Pierel, Xianzhe TZ Tang, Risa H. Wechsler
https://

The Roman View of Strong Gravitational Lenses
Galaxy-galaxy strong gravitational lenses can constrain dark matter models and the Lambda Cold Dark Matter cosmological paradigm at sub-galactic scales. Currently, there is a dearth of images of these rare systems with high signal-to-noise and angular resolution. The Nancy Grace Roman Space Telescope (hereafter, Roman), scheduled for launch in late 2026, will play a transformative role in strong lensing science with its planned wide-field surveys. With its remarkable 0.281 square degree field o…

$\lambda$ and $\rho$ Regge trajectories for the pentaquark $P_{cc\bar{c}bb}$ in the diquark-triquark picture
He Song, Xin-Ru Liu, Jia-Qi Xie, Jiao-Kai Chen
https://arxiv.org/abs/2506.01005

$λ$ and $ρ$ Regge trajectories for the pentaquark $P_{cc\bar{c}bb}$ in the diquark-triquark picture
We propose the Regge trajectory relations for the fully heavy pentaquark $P_{cc\bar{c}bb}$ utilizing both diquark and triquark Regge trajectory relations. Using these new relations, we discuss four series of Regge trajectories: the $ρ_1$-, $ρ_2$-, $λ_1$-, and $λ_2$-trajectories. We provide rough estimates for the masses of the $ρ_1$-, $ρ_2$-, $λ_1$-, and $λ_2$-excited states. Except for the $λ_1$-trajectories, the complete forms of the other three series of Regge trajectories for the p…