Astrophysics – Page 244 – Kavli Institute Pre-Print Publications

Generating operators of symmetry breaking — from discrete to continuous

Posted by dbos July 31, 2023Tokyo

Kavli Affiliate: Toshiyuki Kobayashi | First 5 Authors: Toshiyuki Kobayashi, , , , | Summary: Based on the "generating operator" of the Rankin–Cohen brackets introduced in Kobayashi-Pevzner [arXiv:2306.16800], we present a method to construct various fundamental operators with continuous parameters such as invariant trilinear forms on infinite-dimensional representations, the Fourier and the Poisson transforms on […]

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Generating operators of symmetry breaking — from discrete to continuous

Posted by klaurent July 31, 2023Tokyo

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Explainable Equivariant Neural Networks for Particle Physics: PELICAN

Posted by July 31, 2023Chicago

Kavli Affiliate: David W. Miller | First 5 Authors: Alexander Bogatskiy, Timothy Hoffman, David W. Miller, Jan T. Offermann, Xiaoyang Liu | Summary: PELICAN is a novel permutation equivariant and Lorentz invariant or covariant aggregator network designed to overcome common limitations found in architectures applied to particle physics problems. Compared to many approaches that use […]

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A radio pulsar phase from SGR J1935+2154 provides clues to the magnetar FRB mechanism

Posted by dbos July 30, 2023Peking

Kavli Affiliate: Kejia Lee | First 5 Authors: Weiwei Zhu, Heng Xu, Dejiang Zhou, Lin Lin, Bojun Wang | Summary: The megajansky radio burst, FRB 20200428, and other bright radio bursts detected from the Galactic source SGR J1935+2154 suggest that magnetars can make fast radio bursts (FRBs), but the emission site and mechanism of FRB-like […]

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Existence and regularity of pullback attractors for nonclassical non-autonomous diffusion equations with delay

Posted by klaurent July 28, 2023Peking

Kavli Affiliate: Ke Wang | First 5 Authors: Bin Yang, Yuming Qin, Alain Miranville, Ke Wang, | Summary: In this paper, we consider the asymptotic behavior of weak solutions for non-autonomous diffusion equations with delay in time-dependent spaces when the nonlinear function $f$ is critical growth, the delay term $g(t, u_t)$ contains some hereditary characteristics […]

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A search for new physics in low-energy electron recoils from the first LZ exposure

Posted by klaurent July 28, 2023Stanford

Kavli Affiliate: C. M. Ignarra | First 5 Authors: The LZ Collaboration, J. Aalbers, D. S. Akerib, A. K. Al Musalhi, F. Alder | Summary: The LUX-ZEPLIN (LZ) experiment is a dark matter detector centered on a dual-phase xenon time projection chamber. We report searches for new physics appearing through few-keV-scale electron recoils, using the […]

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A search for new physics in low-energy electron recoils from the first LZ exposure

Posted by klaurent July 28, 2023Stanford

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The proto-galaxy of Milky Way-mass haloes in the FIRE simulations

Posted by klaurent July 28, 2023MIT

Kavli Affiliate: Lina Necib | First 5 Authors: Danny Horta, Emily C. Cunningham, Robyn Sanderson, Kathryn V. Johnston, Alis Deason | Summary: Observational studies are finding stars believed to be relics of the earliest stages of hierarchical mass assembly of the Galaxy. In this work, we contextualize these findings by studying the masses, ages, spatial […]

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The proto-galaxy of Milky Way-mass haloes in the FIRE simulations

Posted by dbos July 28, 2023MIT

Kavli Affiliate: Lina Necib | First 5 Authors: Danny Horta, Emily C. Cunningham, Robyn Sanderson, Kathryn V. Johnston, Alis Deason | Summary: Observational studies are finding stars believed to be relics of the earliest stages of hierarchical mass assembly of the Milky Way (i.e., proto-Galaxy). In this work, we contextualize these findings by studying the […]

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The proto-galaxy of Milky Way-mass haloes in the FIRE simulations

Posted by klaurent July 28, 2023MIT

Kavli Affiliate: Lina Necib | First 5 Authors: Danny Horta, Emily C. Cunningham, Robyn Sanderson, Kathryn V. Johnston, Alis Deason | Summary: Observational studies are finding stars believed to be relics of the earliest stages of hierarchical mass assembly of the Milky Way (i.e., proto-Galaxy). In this work, we contextualize these findings by studying the […]

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