Expanding the ultracompacts: gravitational wave-driven mass transfer in the shortest-period binaries with accretion disks

Posted by dbos MIT

Kavli Affiliate: Scott A. Hughes | First 5 Authors: Joheen Chakraborty, Kevin B. Burdge, Saul A. Rappaport, James Munday, Hai-Liang Chen | Summary: We report the discovery of three ultracompact binary white dwarf systems hosting accretion disks, with orbital periods of 7.95, 8.68, and 13.15 minutes. This significantly augments the population of mass-transferring binaries at […]


Continue.. Expanding the ultracompacts: gravitational wave-driven mass transfer in the shortest-period binaries with accretion disks

Probing false vacuum decay on a cold-atom gauge-theory quantum simulator

Posted by dbos MIT

Kavli Affiliate: Frank Wilczek | First 5 Authors: Zi-Hang Zhu, Ying Liu, Gianluca Lagnese, Federica Maria Surace, Wei-Yong Zhang | Summary: In the context of quantum electrodynamics, the decay of false vacuum leads to the production of electron-positron pair, a phenomenon known as the Schwinger effect. In practical experimental scenarios, producing a pair requires an […]


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Sample path properties and small ball probabilities for stochastic fractional diffusion equations

Posted by dbos Peking

Kavli Affiliate: Ran Wang | First 5 Authors: Yuhui Guo, Jian Song, Ran Wang, Yimin Xiao, | Summary: We consider the following stochastic space-time fractional diffusion equation with vanishing initial condition:$$ partial^{beta} u(t, x)=- left(-Deltaright)^{alpha / 2} u(t, x)+ I_{0+}^{gamma}left[dot{W}(t, x)right],quad tin[0,T],: x in mathbb{R}^d,$$ where $alpha>0$, $betain(0,2)$, $gammain[0,1)$, $left(-Deltaright)^{alpha/2}$ is the fractional/power of Laplacian […]


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Multiwavelength Afterglow Analysis of GRB 221009A: Unveiling the Evolution of a Cooling Break in a Wind-like Medium

Posted by dbos Stanford

Kavli Affiliate: Nicola Omodei | First 5 Authors: Donggeun Tak, Z. Lucas Uhm, Gregory S. H. Paek, Myungshin Im, Makoto Arimoto | Summary: Gamma-ray bursts (GRBs) are the most energetic explosions in the universe, and their afterglow emission provides an opportunity to probe the physics of relativistic shock waves in an extreme environment. Several key […]


Continue.. Multiwavelength Afterglow Analysis of GRB 221009A: Unveiling the Evolution of a Cooling Break in a Wind-like Medium

Multiwavelength Afterglow Analysis of GRB 221009A: Unveiling the Evolution of a Cooling Break in a Wind-like Medium

Posted by dbos Stanford

Kavli Affiliate: Nicola Omodei | First 5 Authors: Donggeun Tak, Z. Lucas Uhm, Gregory S. H. Paek, Myungshin Im, Makoto Arimoto | Summary: Gamma-ray bursts (GRBs) are the most energetic explosions in the universe, and their afterglow emission provides an opportunity to probe the physics of relativistic shock waves in an extreme environment. Several key […]


Continue.. Multiwavelength Afterglow Analysis of GRB 221009A: Unveiling the Evolution of a Cooling Break in a Wind-like Medium

A Novel Density Profile for Isothermal Cores of Dark Matter Halos

Posted by dbos MIT

Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Vinh Tran, Xuejian Shen, Mark Vogelsberger, Daniel Gilman, Stephanie O’Neil | Summary: We present a novel density profile for halos in self-interacting dark matter (SIDM) models, which accurately captures the flat- and isothermal-core configurations. We show analytically how our density profile satisfies these conditions, with comparisons to […]


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A Time-Dependent Spectral Analysis of $γ$ Cassiopeiae

Posted by dbos MIT

Kavli Affiliate: Moritz Guenther | First 5 Authors: Sean J. Gunderson, David P. Huenemoerder, José M. Torrejón, Dustin K. Swarm, Joy S. Nichols | Summary: We investigated the temporal and spectral features of $gamma$ Cassiopeiae’s X-ray emission within the context of the white dwarf accretion hypothesis. We find that the variabilities present in the X-ray […]


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A Time-Dependent Spectral Analysis of $γ$ Cassiopeiae

Posted by dbos MIT

Kavli Affiliate: David P. Huenemoerder | First 5 Authors: Sean J. Gunderson, David P. Huenemoerder, José M. Torrejón, Dustin K. Swarm, Joy S. Nichols | Summary: We investigated the temporal and spectral features of $gamma$ Cassiopeiae’s X-ray emission within the context of the white dwarf accretion hypothesis. We find that the variabilities present in the […]


Continue.. A Time-Dependent Spectral Analysis of $γ$ Cassiopeiae

A Time-Dependent Spectral Analysis of $γ$ Cassiopeiae

Posted by dbos MIT

Kavli Affiliate: David P. Huenemoerder | First 5 Authors: Sean J. Gunderson, David P. Huenemoerder, José M. Torrejón, Dustin K. Swarm, Joy S. Nichols | Summary: We investigated the temporal and spectral features of $gamma$ Cassiopeiae’s X-ray emission within the context of the white dwarf accretion hypothesis. We find that the variabilities present in the […]


Continue.. A Time-Dependent Spectral Analysis of $γ$ Cassiopeiae

Logical computation demonstrated with a neutral atom quantum processor

Posted by dbos MIT

Kavli Affiliate: Michael McDonald | First 5 Authors: Ben W. Reichardt, Adam Paetznick, David Aasen, Ivan Basov, Juan M. Bello-Rivas | Summary: Transitioning from quantum computation on physical qubits to quantum computation on encoded, logical qubits can improve the error rate of operations, and will be essential for realizing valuable quantum computational advantages. Using a […]


Continue.. Logical computation demonstrated with a neutral atom quantum processor