dbos – Page 427 – Kavli Institute Pre-Print Publications

Critical fates induced by interaction competition in the three-dimensional tilted Dirac semimetals

Posted by dbos July 25, 2023Peking

Kavli Affiliate: Jing Wang | First 5 Authors: Jing Wang, Jie-Qiong Li, Wen-Hao Bian, Qiao-Chu Zhang, Xiao-Yue Ren | Summary: The interplay between Coulomb interaction, electron-phonon coupling, and phonon-phonon coupling has a significant impact on the low-energy behavior of three-dimensional type-I tilted Dirac semimetals. To investigate this phenomenon, we construct an effective theory, calculate one-loop […]

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Classical radiation fields for scalar, electromagnetic, and gravitational waves with spacetime-symmetry breaking

Posted by dbos July 25, 2023Peking

Kavli Affiliate: Lijing Shao | First 5 Authors: Quentin G. Bailey, Alexander S. Gard, Nils A. Nilsson, Rui Xu, Lijing Shao | Summary: An effective field theory framework is used to investigate some Lorentz-violating effects on the generation of electromagnetic and gravitational waves, complementing previous work on propagation. Specifically we find solutions to a modified, […]

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Extra-tensor-induced origin for the PTA signal: No primordial black hole production

Posted by dbos July 24, 2023Tokyo

Kavli Affiliate: Misao Sasaki | First 5 Authors: Mohammad Ali Gorji, Misao Sasaki, Teruaki Suyama, , | Summary: Recently, pulsar timing array (PTA) collaborations announced evidence for an isotropic stochastic gravitational wave (GW) background. The origin of the PTA signal can be astrophysical or cosmological. In the latter case, the so-called secondary scalar-induced GW scenario […]

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Underluminous tidal disruptions

Posted by dbos July 24, 2023Peking

Kavli Affiliate: Pau Amaro Seoane | First 5 Authors: Pau Amaro Seoane, , , , | Summary: We have evidence of X-ray flares in several galaxies consistent with a a star being tidally disrupted by a supermassive black hole (MBH). If the star starts on a nearly parabolic orbit relative to the MBH, one can […]

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Pro-PRIME: A general Temperature-Guided Language model to engineer enhanced Stability and Activity in Proteins

Posted by dbos July 24, 2023Tokyo

Kavli Affiliate: Jia Liu | First 5 Authors: Fan Jiang, Mingchen Li, Jiajun Dong, Yuanxi Yu, Xinyu Sun | Summary: Designing protein mutants of both high stability and activity is a critical yet challenging task in protein engineering. Here, we introduce PRIME, a deep learning model, which can suggest protein mutants of improved stability and […]

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Fast and Fourier: Extreme Mass Ratio Inspiral Waveforms in the Frequency Domain

Posted by dbos July 24, 2023MIT

Kavli Affiliate: Scott A. Hughes | First 5 Authors: Lorenzo Speri, Michael L. Katz, Alvin J. K. Chua, Scott A. Hughes, Niels Warburton | Summary: Extreme Mass Ratio Inspirals (EMRIs) are one of the key sources for future space-based gravitational wave interferometers. Measurements of EMRI gravitational waves are expected to determine the characteristics of their […]

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Fast and Fourier: Extreme Mass Ratio Inspiral Waveforms in the Frequency Domain

Posted by dbos July 24, 2023MIT

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Unravelling the Mechanics of Knitted Fabrics Through Hierarchical Geometric Representation

Posted by dbos July 23, 2023Harvard

Kavli Affiliate: Katia Bertoldi | First 5 Authors: Xiaoxiao Ding, Vanessa Sanchez, Katia Bertoldi, Chris H. Rycroft, | Summary: Knitting interloops one-dimensional yarns into three-dimensional fabrics that exhibit behaviours beyond their constitutive materials. How extensibility and anisotropy emerge from the hierarchical organisation of yarns into knitted fabrics has long been unresolved. We sought to unravel […]

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Complex magnetic and spatial symmetry breaking from correlations in kagome flat bands

Posted by dbos July 21, 2023Berkeley

Kavli Affiliate: Joel E. Moore | First 5 Authors: Yu-Ping Lin, Chunxiao Liu, Joel E. Moore, , | Summary: We present the mean-field phase diagram of electrons in a kagome flat band with repulsive interactions. In addition to flat-band ferromagnetism, the Hartree-Fock analysis yields cascades of unconventional magnetic orders driven by onsite repulsion as filling […]

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Design principles of transcription factors with intrinsically disordered regions

Posted by dbos July 20, 2023Harvard

Kavli Affiliate: Ariel Amir | First 5 Authors: Wencheng Ji, Ori Hachmo, Naama Barkai, Ariel Amir, | Summary: Transcription Factors (TFs) are proteins crucial for regulating gene expression. Effective regulation requires the TFs to rapidly bind to the correct target, enabling the cell to respond timely to various stimuli such as nutrient availability or toxin […]

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