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Author(s): L. Gavassino The author discusses causality constraints on radiative transfers in hydrodynamics. Causality imposes stringent constraints on the transport coefficients. The author proposes a relativistic hydrodynamical model of radiative transfer, proving that it is causal and covariantly stable, whence it is shown that the transport coefficients are within the so called hydrohedron bounds. [Phys. Rev. D 111, 103011] Published Wed...

Author(s): Pablo Bueno, Pablo A. Cano, Robie A. Hennigar, and Ángel J. Murcia Nonsingular black hole solutions are generically possible in modified theories of gravity in dimensions D ≥ 5. [Phys. Rev. D 111, 104009] Published Tue May 06, 2025

Author(s): Vivian Poulin, Tristan L. Smith, Rodrigo Calderón, and Théo Simon The cosmic calibration tension is a statistically significant mismatch between the BAO and SN1a distance ladders, possibly indicating deviations from the ΛCDM framework. Resolving the tension demands new physics and a broader approach — either focused on a targeted modification of the pre-recombination expansion history, or to a wider change affecting multiple cosmic...

Author(s): Rajesh Kumar, Joaquin Grefa, Konstantin Maslov, Yuhan Wang, Arvind Kumar, Ralf Rapp, Claudia Ratti, and Veronica Dexheimer Quantum chromodynamics (QCD) at non-zero temperature and density is a vastly complex and rich system, and mapping out its phase structure has consequences for physics at scales from the collisions of heavy ions to the interior of neutron stars. The authors extend a mean-field approximation to thermal QCD by including...

Author(s): K. Schoeffler, N. Shukla, and L. O. Silva The distribution of dark matter around a pair of colliding galaxy clusters appears unaffected by a putative dark-sector version of electromagnetism. [Phys. Rev. D 111, L071701] Published Thu Apr 17, 2025

Author(s): Carlos Hervías-Caimapo, Ari J. Cukierman, Patricia Diego-Palazuelos, Kevin M. Huffenberger, and Susan E. Clark The detection of rotation of linearly polarized cosmic microwave background photons, which is called cosmic birefringence, may suggest new parity-violating physics. However, scattering by dust can also mimic this same effect. In this paper, the authors extends a pre-existing dust filament model to compute this effect to make...

Author(s): Hang Yu and Shu Yan Lau In the late inspiral phase of compact binary coalescences involving neutron stars, tidal effects become increasingly important. Hang Yu and Shu Yan Lau model this system taking into consideration the tidal spin, the part of the spin that evolves in time due to tidal torquing, and its back reaction on the inspiral orbit. The rich picture developed could account for discrepancies between earlier models and numerical...