July 2023 – Page 8 – Kavli Institute Pre-Print Publications

Unravelling the Mechanics of Knitted Fabrics Through Hierarchical Geometric Representation

Posted by klaurent 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 organization of yarns into knitted fabrics has long been unresolved. We sought to unravel […]

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Observation of spin polarons in a frustrated moiré Hubbard system

Posted by klaurent July 23, 2023Cornell

Kavli Affiliate: Jie Shan | First 5 Authors: Zui Tao, Wenjin Zhao, Bowen Shen, Patrick Knüppel, Kenji Watanabe | Summary: The electron’s kinetic energy plays a pivotal role in magnetism. While virtual electron hopping promotes antiferromagnetism in an insulator, the real process usually favors ferromagnetism. But in kinetically frustrated systems, such as hole doped triangular […]

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Cosmological baryon spread and impact on matter clustering in CAMELS

Posted by klaurent July 21, 2023MIT

Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Matthew Gebhardt, Daniel Anglés-Alcázar, Josh Borrow, Shy Genel, Francisco Villaescusa-Navarro | Summary: We quantify the cosmological spread of baryons relative to their initial neighboring dark matter distribution using thousands of state-of-the-art simulations from the Cosmology and Astrophysics with MachinE Learning Simulations (CAMELS) project. We show that dark […]

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Four years of Type Ia Supernovae Observed by TESS: Early Time Light Curve Shapes and Constraints on Companion Interaction Models

Posted by klaurent July 21, 2023MIT

Kavli Affiliate: George R. Ricker | First 5 Authors: M. M. Fausnaugh, P. J. Vallely, M. A. Tucker, C. S. Kochanek, B. J. Shappee | Summary: We present 307 Type Ia supernova (SN) light curves from the first four years of the TESS mission. We use this sample to characterize the shapes of the early […]

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

Posted by klaurent July 21, 2023Berkeley

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Sagnac interferometry for high-sensitivity optical measurements of spin-orbit torque

Posted by klaurent July 21, 2023Cornell

Kavli Affiliate: Daniel C. Ralph | First 5 Authors: Saba Karimeddiny, Thow Min Jerald Cham, Orion Smedley, Daniel C. Ralph, Yunqiu Kelly Luo | Summary: Sagnac interferometry can provide a significant improvement in signal-to-noise ratio compared to conventional magnetic imaging based on the magneto-optical Kerr effect (MOKE). We show that this improvement is sufficient to […]

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Discovery and characterisation of two Neptune-mass planets orbiting HD 212729 with TESS

Posted by klaurent July 21, 2023MIT

Kavli Affiliate: Sara Seager | First 5 Authors: David J. Armstrong, Ares Osborn, Vardan Adibekyan, Elisa Delgado-Mena, Saeed Hojjatpanah | Summary: We report the discovery of two exoplanets orbiting around HD 212729 (TOI,1052, TIC 317060587), a $T_{rm eff}=6146$K star with V=9.51 observed by TESS in Sectors 1 and 13. One exoplanet, TOI-1052b, is Neptune-mass and […]

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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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Roles of intrinsically disordered regions in transcription factor search

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 that regulate gene expression. The regulation mechanism is via the binding of a TF to a specific part of the gene associated with it, the TF’s target. For the regulation to be […]

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