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Author(s): Nirmal Raj, Prajwal Shivanna, and Gaurav Niraj Rachh A number of astrophysical mechanisms can cause observationally detectable late-time reheating in neutron stars. The paper estimates the sensitivities of the James Webb Space, Extremely Large, and Thirty Meter Telescopes for such observations, also highlighting candidate target systems. [Phys. Rev. D 109, 123040] Published Thu Jun 27, 2024

Author(s): Namitha Suresh and David F. Chernoff The authors combine new (“multipoint”) methods with established asymptotic and numerical tools to calculate the emission of gravitational radiation from cosmic string loops over the entire celestial sphere from the ultra-low to the ultra-high frequency spectrum. These emissions contribute to the stochastic gravitational wave background and will be detectable by a wide range of instruments, from pulsar...

Author(s): Neal Dalal, Marios Galanis, Charles Gammie, Samuel E. Gralla, and Norman Murray This future-looking paper proposes an optical telescope array that would employ long-baseline intensity interferometry to image Active Galactic Nuclei (AGN) disks with unprecedented angular resolution. Applications include disk radial profiles of nearby bright AGN, and resolved imaging of Broad Line Regions at cosmological distances, paving the way for using...

Author(s): Elena M. Kantor, Mikhail E. Gusakov, and Kirill Y. Kraav The authors study the effect of particle diffusion on the gravitational wave signal from merging neutron stars. As neutron stars merge, the gravitational field from each star induces a tidal perturbation on the other. Particle diffusion will induce dissipation during this process, which both heats up the neutron star and drains energy from the orbit. The authors show that this...

Author(s): Francesco Turro, Anthony Ciavarella, and Xiaojun Yao The authors compute the ratio of the shear viscosity to the entropy for a SU(2) gauge theory in 2+1 dimensions at nonzero temperature. They do so by using the Kubo formula, evaluating the evolution in real time on small lattices, using both exact diagonalization and quantum computers. The two methods give consistent results, near the holographic bound of 1/4 π. [Phys. Rev. D 109...

Author(s): David J. Wilson, Christopher E. Thomas, Jozef J. Dudek, and Robert G. Edwards (for the Hadron Spectrum Collaboration) A state-of-the-art lattice QCD computation involving hundreds of finite-volume spectra up to 4100 MeV finds only one scalar χc0 and one tensor χc2 charmonium resonances. [Phys. Rev. D 109, 114503] Published Mon Jun 10, 2024

Author(s): I. Adachi et al. (Belle II Collaboration) The Belle II Collaboration finds the first evidence for the rare decay B+→K+νν¯. Interestingly, the measured branching fraction is about 2.7 sigma larger than the standard model expectation. [Phys. Rev. D 109, 112006] Published Thu Jun 06, 2024