Incorporating electronic information into Machine Learning potential energy surfaces via approaching the ground-state electronic energy as a function of atom-based electronic populations

Posted by klaurent Berkeley

Kavli Affiliate: Kristin A. Persson | First 5 Authors: Xiaowei Xie, Kristin A. Persson, David W. Small, , | Summary: Machine Learning (ML) approximations to Density Functional Theory (DFT) potential energy surfaces (PESs) are showing great promise for reducing the computational cost of accurate molecular simulations, but at present they are not applicable to varying […]


Continue.. Incorporating electronic information into Machine Learning potential energy surfaces via approaching the ground-state electronic energy as a function of atom-based electronic populations

Spatially resolved velocity structure in jets of DF Tau and UY Aur A

Posted by klaurent MIT

Kavli Affiliate: David A. Principe | First 5 Authors: Anastasiia V Uvarova, Hans Moritz Günther, David A. Principe, P. Christian Schneider, | Summary: Young stars accrete mass and angular momentum from their circumstellar disks. Some of them also drive outflows, which can be distinguished in optical forbidden emission lines (FELs). We analyze a sample of […]


Continue.. Spatially resolved velocity structure in jets of DF Tau and UY Aur A

A pair of TESS planets spanning the radius valley around the nearby mid-M dwarf LTT 3780

Posted by klaurent MIT

Kavli Affiliate: Christopher Burke | First 5 Authors: Ryan Cloutier, Jason D. Eastman, Joseph E. Rodriguez, Nicola Astudillo-Defru, Xavier Bonfils | Summary: We present the confirmation of two new planets transiting the nearby mid-M dwarf LTT 3780 (TIC 36724087, TOI-732, $V=13.07$, $K_s=8.204$, $R_s$=0.374 R$_{odot}$, $M_s$=0.401 M$_{odot}$, d=22 pc). The two planet candidates are identified in […]


Continue.. A pair of TESS planets spanning the radius valley around the nearby mid-M dwarf LTT 3780

A rapid change in X-ray variability and a jet ejection in the black hole transient MAXI J1820+070

Posted by klaurent MIT

Kavli Affiliate: Dheeraj R. Pasham | First 5 Authors: Jeroen Homan, Joe Bright, Sara E. Motta, Diego Altamirano, Zaven Arzoumanian | Summary: We present Neutron Star Interior Composition Explorer X-ray and Arcminute Microkelvin Imager Large Array radio observations of a rapid hard-to-soft state transition in the black hole X-ray transient MAXI J1820+070. During the transition […]


Continue.. A rapid change in X-ray variability and a jet ejection in the black hole transient MAXI J1820+070

Gopakumar-Vafa type invariants on Calabi-Yau 4-folds via descendent insertions

Posted by klaurent Tokyo

Kavli Affiliate: Yukinobu Toda | First 5 Authors: Yalong Cao, Yukinobu Toda, , , | Summary: The Gopakumar-Vafa type invariants on Calabi-Yau 4-folds (which are non-trivial only for genus zero and one) are defined by Klemm-Pandharipande from Gromov-Witten theory, and their integrality is conjectured. In a previous work of Cao-Maulik-Toda, $mathrm{DT}_4$ invariants with primary insertions […]


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Forced Oscillatory Motion of Trapped Counter-Propagating Solitons

Posted by klaurent Caltech

Kavli Affiliate: Kerry J. Vahala | First 5 Authors: Chengying Bao, Boqiang Shen, Myoung-Gyun Suh, Heming Wang, Kemal Safak | Summary: Both the group velocity and phase velocity of two solitons can be synchronized by a Kerr-effect mediated interaction, causing what is known as soliton trapping. Trapping can occur when solitons travel through single-pass optical […]


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Reply to Robinson and Michaud, arXiv:2002.08893

Posted by klaurent Stanford

Kavli Affiliate: Noah Kurinsky | First 5 Authors: Noah Kurinsky, Daniel Baxter, Yonatan Kahn, Gordan Krnjaic, Peter Abbamonte | Summary: We respond to Robinson and Michaud’s (RM) comment (arXiv:2002.08893) on our recent preprint arXiv:2002.06937, in which we discuss recent excesses in low-threshold dark matter searches, and offer a potential unifying dark matter interpretation. We thank […]


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Multi-functional volumetric meta-optics for color and polarization image sensors

Posted by klaurent Caltech

Kavli Affiliate: Andrei Faraon | First 5 Authors: Philip Camayd-Muñoz, Conner Ballew, Gregory Roberts, Andrei Faraon, | Summary: Three-dimensional elements, with refractive index distribution structured at sub-wavelength scale, provide an expansive optical design space that can be harnessed for demonstrating multi-functional free-space optical devices. Here we present 3D dielectric elements, designed to be placed on […]


Continue.. Multi-functional volumetric meta-optics for color and polarization image sensors