PROBs and perverse sheaves I. Symmetric products

Kavli Affiliate: Mikhail Kapranov | First 5 Authors: Mikhail Kapranov, Vadim Schechtman, , , | Summary: Algebraic structures involving both multiplications and comultiplications (such as, e.g., bialgebras or Hopf algebras) can be encoded using PROPs (categories with PROducts and Permutations) of Adams and MacLane. To encode such structures on objects of a braided monoidal category, […]


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Principles of Low Dissipation Computing from a Stochastic Circuit Model

Kavli Affiliate: David T. Limmer | First 5 Authors: Chloe Ya Gao, David T. Limmer, , , | Summary: We introduce a thermodynamically consistent, minimal stochastic model for complementary logic gates built with field-effect transistors. We characterize the performance of such gates with tools from information theory and study the interplay between accuracy, speed, and […]


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Approaching the motional ground state of a 10 kg object

Kavli Affiliate: Nergis Mavalvala | First 5 Authors: Chris Whittle, Evan D. Hall, Sheila Dwyer, Nergis Mavalvala, Vivishek Sudhir | Summary: The motion of a mechanical object — even a human-sized object — should be governed by the rules of quantum mechanics. Coaxing them into a quantum state is, however, difficult: the thermal environment masks […]


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Discovery of Candidate X-ray Jets in High-Redshift Quasars

Kavli Affiliate: Herman L. Marshall | First 5 Authors: Bradford Snios, Daniel A. Schwartz, Aneta Siemiginowska, Małgosia Sobolewska, Mark Birkinshaw | Summary: We present Chandra X-ray observations of 14 radio-loud quasars at redshifts $3 < z < 4$, selected from a well-defined sample. All quasars are detected in the 0.5-7.0 keV energy band, and resolved […]


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Feebly-Interacting Particles:FIPs 2020 Workshop Report

Kavli Affiliate: Yevgeny Stadnik | First 5 Authors: Prateek Agrawal, Martin Bauer, James Beacham, Asher Berlin, Alexey Boyarsky | Summary: With the establishment and maturation of the experimental programs searching for new physics with sizeable couplings at the LHC, there is an increasing interest in the broader particle and astrophysics community for exploring the physics […]


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Conformal maps in higher dimensions and derived geometry

Kavli Affiliate: Mikhail Kapranov | First 5 Authors: Mikhail Kapranov, , , , | Summary: By Liouville’s theorem, in dimensions 3 or more conformal transformations form a finite-dimensional group, an apparent drastic departure from the 2-dimensional case. We propose a derived enhancement of the conformal Lie algebra which is an infinite-dimensional dg-Lie algebra incorporating not […]


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GRB 191016A: A Long Gamma-Ray Burst Detected by TESS

Kavli Affiliate: Nicola Omodei | First 5 Authors: Krista Lynne Smith, Ryan Ridden-Harper, Michael Fausnaugh, Tansu Daylan, Nicola Omodei | Summary: The TESS exoplanet-hunting mission detected the rising and decaying optical afterglow of GRB 191016A, a long Gamma-Ray Burst (GRB) detected by Swift-BAT but without prompt XRT or UVOT follow-up due to proximity to the […]


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Cascades and Reconnection in Interacting Vortex Filaments

Kavli Affiliate: Shmuel M. Rubinstein | First 5 Authors: Rodolfo Ostilla-Mónico, Ryan McKeown, Michael P. Brenner, Shmuel M. Rubinstein, Alain Pumir | Summary: At high Reynolds number, the interaction between two vortex tubes leads to intense velocity gradients, which are at the heart of fluid turbulence. This vorticity amplification comes about through two different instability […]


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A Higher Probability of Detecting Lensed Supermassive Black Hole Binaries by LISA

Kavli Affiliate: Xian Chen | First 5 Authors: Zucheng Gao, Xian Chen, Yi-Ming Hu, Jian-Dong Zhang, Shunjia Huang | Summary: Gravitational lensing of gravitational waves (GWs) is a powerful probe of the matter distribution in the universe. Here we revisit the wave-optics effects induced by dark matter (DM) halos on the GW signals of merging […]


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