Showing 2021Show all

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astro-ph.EP2021★ 22 cited

A 38 Million Year Old Neptune-Sized Planet in the Kepler Field

L. G. Bouma, J. L. Curtis, K. Masuda +12

Kepler 1627A is a G8V star previously known to host a 3.8 Earth-radius planet on a 7.2 day orbit. The star was observed by the Kepler space telescope because it is nearby (d=329 pc…

astro-ph.HE2021★ 35 cited

Self-lensing flares from black hole binaries II: observing black hole shadows via light-curve tomography

Jordy Davelaar, Zoltán Haiman

Supermassive black hole (BH) binaries are thought to produce self-lensing flares (SLF) when the two BHs are aligned with the line-of-sight. If the binary orbit is observed nearly e…

astro-ph.HE2021★ 44 cited

Self-lensing flares from black hole binaries I: general-relativistic ray tracing of black hole binaries

Jordy Davelaar, Zoltán Haiman

The self-lensing of a massive black hole binary (MBHB), which occurs when the two BHs are aligned close to the line of sight, is expected to produce periodic, short-duration flares…

cond-mat.mtrl-sci2021★ 61 cited

Visualizing Atomically-Layered Magnetism in CrSBr

Daniel J. Rizzo, Alexander S. McLeod, Caitlin Carnahan +10

Two-dimensional (2D) materials can host stable, long-range magnetic phases in the presence of underlying magnetic anisotropy. The ability to realize the full potential of 2D magnet…

cond-mat.supr-con2021★ 2 cited

Anti-Poiseuille Flow: Increased Vortex Velocity at Superconductor Edges

T. Okugawa, A. Benyamini, A. J. Millis +1

Using the time-dependent Ginzburg Landau equations we study vortex motion driven by an applied current in two dimensional superconductors in the presence of a physical boundary. At…

astro-ph.HE2021★ 7 cited

Measuring the Non-Axially-Symmetric Surface Temperature Distribution of the Central Compact Object in Puppis A

J. A. J. Alford, E. V. Gotthelf, R. Perna +1

The surface temperature distributions of central compact objects (CCOs) are powerful probes of their crustal magnetic field strengths and geometries. Here we model the surface temp…

astro-ph.SR2021

A Stringent Test of Magnetic Models of Stellar Evolution

Guillermo Torres, Gregory A. Feiden, Andrew Vanderburg +1

Main-sequence stars with convective envelopes often appear larger and cooler than predicted by standard models of stellar evolution for their measured masses. This is believed to b…

cond-mat.mtrl-sci2021

The Phonon Quasiparticle Approach for Anharmonic Properties of Solids

Zhen Zhang, Dong-Bo Zhang, Tao Sun +1

Knowledge of lattice anharmonicity is essential to elucidate distinctive thermal properties in crystalline solids. Yet, accurate \textit{ab initio} investigations of lattice anharm…

astro-ph.HE2021★ 53 cited

Evidence for a Compact Object in the Aftermath of the Extra-Galactic Transient AT2018cow

Dheeraj R. Pasham, Wynn C. G. Ho, William Alston +16

The brightest Fast Blue Optical Transients (FBOTs) are mysterious extragalactic explosions that may represent a new class of astrophysical phenomena. Their fast time to maximum bri…

physics.atom-ph2021★ 2 cited

Laser Cooling Scheme for the Carbon Dimer (C)

Niccolò Bigagli, Daniel W. Savin, Sebastian Will

We report on a scheme for laser cooling of C. We have calculated the branching ratios for cycling and repumping transitions and calculated the number of photon scatterin…

cs.LG2021★ 31 cited

Manifold embedding data-driven mechanics

Bahador Bahmani, WaiChing Sun

This article introduces a new data-driven approach that leverages a manifold embedding generated by the invertible neural network to improve the robustness, efficiency, and accurac…

physics.soc-ph2021★ 118 cited

Citation inequity and gendered citation practices in contemporary physics

Erin G. Teich, Jason Z. Kim, Christopher W. Lynn +8

The historical and contemporary under-attribution of women's contributions to scientific scholarship is well-known and well-studied, with effects that are felt today in myriad ways…

cs.AI2021★ 4 cited

Planning with Biological Neurons and Synapses

Francesco d'Amore, Daniel Mitropolsky, Pierluigi Crescenzi +2

We revisit the planning problem in the blocks world, and we implement a known heuristic for this task. Importantly, our implementation is biologically plausible, in the sense that…

quant-ph2021★ 51 cited

Efficient quantum computation of molecular forces and other energy gradients

Thomas E. O'Brien, Michael Streif, Nicholas C. Rubin +12

While most work on the quantum simulation of chemistry has focused on computing energy surfaces, a similarly important application requiring subtly different algorithms is the comp…

physics.atom-ph2021★ 192 cited

Magneto-Optical Trapping and Sub-Doppler Cooling of a Polyatomic Molecule

Nathaniel B. Vilas, Christian Hallas, Loïc Anderegg +4

We report magneto-optical trapping (MOT) of a polyatomic molecule, calcium monohydroxide (CaOH). The MOT contains CaOH molecules at a peak density of $3.0(8)\ti…

physics.ao-ph2021★ 10 cited

Toward a unified theory for the Hadley cell descending and ascending edges

Spencer A. Hill, Simona Bordoni, Jonathan L. Mitchell

We present theories for the latitudinal extents of both Hadley cells throughout the annual cycle by combining our recent scaling for the ascending edge latitude (Hill et al. 2021)…

astro-ph.IM2021

CHILES VII: Deep Imaging for the CHILES project, a SKA prototype

R. Dodson, E. Momjian, D. J. Pisano +16

Radio Astronomy is undergoing a renaissance, as the next-generation of instruments provides a massive leap forward in collecting area and therefore raw sensitivity. However, to ach…

cond-mat.str-el2021★ 26 cited

Unveiling the underlying interactions in Ta2NiSe5 from photo-induced lifetime change

Denis Golez, Sydney K. Y. Dufresne, Min-Jae Kim +14

We present a generic procedure for quantifying the interplay of electronic and lattice degrees of freedom in photo-doped insulators through a comparative analysis of theoretical ma…

cs.AI2021★ 3 cited

DEBACER: a method for slicing moderated debates

Thomas Palmeira Ferraz, Alexandre Alcoforado, Enzo Bustos +6

Subjects change frequently in moderated debates with several participants, such as in parliamentary sessions, electoral debates, and trials. Partitioning a debate into blocks with…

astro-ph.GA2021

Turning Points in the Age-Metallicity Relations -- Created by Late Satellite Infall and Enhanced by Radial Migration

Yuxi Lu, Melissa K. Ness, Tobias Buck +1

The present-day Age-Metallicity Relation (AMR) is a record of the star formation history of the Galaxy, as this traces the chemical enrichment of the gas over time. We use a zoomed…

astro-ph.IM2021★ 3 cited

Branching ratio for forming and

Pierre-Michel Hillenbrand, Nathalie de Ruette, Xavier Urbain +1

The gas-phase reaction of has two exothermic product channels, and . In the present…

cs.LG2021

Unsupervised Representation Learning via Neural Activation Coding

Yookoon Park, Sangho Lee, Gunhee Kim +1

We present neural activation coding (NAC) as a novel approach for learning deep representations from unlabeled data for downstream applications. We argue that the deep encoder shou…

astro-ph.SR2021★ 12 cited

Searching for Anomalies in the ZTF Catalog of Periodic Variable Stars

H. S. Chan, V. Ashley Villar, S. H. Cheung +4

Periodic variables illuminate the physical processes of stars throughout their lifetime. Wide-field surveys continue to increase our discovery rates of periodic variable stars. Aut…

cs.SD2021★ 22 cited

Speech Separation Using an Asynchronous Fully Recurrent Convolutional Neural Network

Xiaolin Hu, Kai Li, Weiyi Zhang +3

Recent advances in the design of neural network architectures, in particular those specialized in modeling sequences, have provided significant improvements in speech separation pe…