Prépublication
· 2026 arXiv
EN
The Gálvez Davison Index (GDI) is a thermodynamic diagnostic designed to summarize convective favorability in the tropical regions, yet its transferability across complex terrain and heterogeneous hydroclimates remains uncertain. Here we assess the climatologi...
Mauricio López-Reyes, Carlos Calvo-Sancho et al.
#physics.ao-ph
Prépublication
· 2026 arXiv
EN
As we move through the world and carry out everyday tasks, we encounter objects that may become relevant only later. We are capable of recalling where we left something or what was inside a container, even without knowing we would need it later. Here, we study...
Shravan Chaudhari, William Paul et al.
#cs.CV
Prépublication
· 2026 arXiv
EN
Many of the questions now put to large language models have no correct answer to score against: what a policy is worth, which option a user should choose, how to weigh competing values. Stated-preference economics has faced this problem for decades. It judges...
Daniel Robert Kling Alexander, Catherine Louise Kling
#cs.AI
Prépublication
· 2026 arXiv
EN
Robot foundation models provide strong visuomotor control, yet their performance can degrade when object positions or task instructions change. Further improvements often require post-training on substantial robot data, which can be costly to collect through m...
Python Song, Zhixuan Liang et al.
#cs.AI
Prépublication
· 2026 arXiv
EN
How can we predict which base checkpoint is worth an expensive round of agentic post-training? End-to-end pass@$K$ tests whether successful behavior already appears in a base model's distribution, but it is a poor fit for agentic coding: many base checkpoints...
Tan Yu, Alexander Bukharin et al.
#cs.AI
Prépublication
· 2026 arXiv
EN
Deployments of research agents are moving to populations of thousands that share one pool of compute, while most current systems organize one project at a time or leave the population unorganized. We argue that such a population will acquire an organization wh...
Ali Asaria, Deep Gandhi et al.
#cs.MA
Prépublication
· 2026 arXiv
EN
Rapid and accurate prediction of urban wind and temperature fields is important for urban microclimate design and climate adaptation. Large-eddy simulation (LES) effectively resolves these instantaneous fields, but its application is limited in iterative desig...
Peng Liu, Shaoxiang Qin et al.
#physics.flu-dyn
Prépublication
· 2026 arXiv
EN
Transient supplies of nutrients to the surface ocean, both natural and artificial, stimulate blooms of phytoplankton and the formation of organic matter, driving air-sea gradients and uptake of CO$_2$. However, quantifying the associated carbon budget remains...
Stefano Campagnola, Stephanie Dutkiewicz et al.
#physics.ao-ph
Prépublication
· 2026 arXiv
EN
We constrain oscillatory features in the primordial power spectrum using the public DESI DR1 galaxy and quasar clustering data. Our analysis is based on a custom pipeline for the redshift-space power spectrum and bispectrum of the six main DESI DR1 tracers, mo...
Shi-Fan Chen, Anton Chudaykin et al.
#astro-ph.CO
Prépublication
· 2026 arXiv
EN
We present the angular BAO analysis using DESI DR1 data as a complementary approach to DESI's primary 3D BAO analysis. We perform the analysis using the two-point angular correlation function $w(θ)$ in tomographic redshift shells of $δz = 0.02, 0.05$, spanning...
Anya Paopiamsap, Juan Mena-Fernández et al.
#astro-ph.CO
Prépublication
· 2026 arXiv
EN
Cosmic birefringence, the rotation of the polarization plane of CMB photons, provides an intriguing probe of physics beyond the Standard Model. In this paper, we investigate a vector Chern-Simons coupling between the neutrino current and photons as a possible...
Kentaro Kasai, Ippei Obata
#astro-ph.CO
Prépublication
· 2026 arXiv
EN
Standard benchmark tests for numerical magnetohydrodynamics codes focus on one- and two-dimensional problems that ignore the possibility of dynamos, i.e., an exponential instability converting kinetic energy into magnetic energy. They also tend to ignore magne...
Nikyta Shchutskyi, Axel Brandenburg et al.
#physics.comp-ph