All Disciplines – Page 832 – Kavli Institute Pre-Print Publications

Direct Measurement of Thermalization to Rayleigh-Jeans Distribution in Optical Beam Self-Cleaning

Posted by klaurent December 22, 2020Cornell

Kavli Affiliate: Frank Wise | First 5 Authors: Hamed Pourbeyram, Pavel Sidorenko, Fan Wu, Logan Wright, Demetrios Christodoulides | Summary: An equilibrium thermodynamic framework that describes highly-multimode optical processes was introduced recently. This theory predicts the outcomes of complex linear and nonlinear multimode interactions based on thermodynamic principles and provides analytic results for the distributions […]

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Direct Observation of Thermalization to a Rayleigh-Jeans Distribution in Multimode Optical Fibers

Posted by dbos December 22, 2020Cornell

Kavli Affiliate: Frank Wise | First 5 Authors: Hamed Pourbeyram, Pavel Sidorenko, Fan Wu, Nicholas Bender, Logan Wright | Summary: Recent years have witnessed a resurgence of interest in nonlinear multimode optical systems where a host of intriguing effects have been observed that are impossible in single-mode settings. While nonlinearity can provide a rich environment […]

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X-ray flares from the stellar tidal disruption by a candidate supermassive black hole binary

Posted by dbos December 22, 2020Peking

Kavli Affiliate: Fukun Liu | First 5 Authors: Xinwen Shu, Wenjie Zhang, Shuo Li, Ning Jiang, Liming Dou | Summary: Optical transient surveys have led to the discovery of dozens of stellar tidal disruption events (TDEs) by massive black hole in the centers of galaxies. Despite extensive searches, X-ray follow-up observations have produced no or […]

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X-ray flares from the stellar tidal disruption by a candidate supermassive black hole binary

Posted by dbos December 22, 2020Peking

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Coherent mechanical noise cancellation and cooperativity competition in optomechanical arrays

Posted by klaurent December 21, 2020Delft

Kavli Affiliate: Simon Groblacher | First 5 Authors: Matthijs H. J. de Jong, Jie Li, Claus Gärtner, Richard A. Norte, Simon Gröblacher | Summary: Studying the interplay between multiple coupled mechanical resonators is a promising new direction in the field of optomechanics. Understanding the dynamics of the interaction can lead to rich new effects, such […]

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Some comments on 6d global gauge anomalies

Posted by klaurent December 21, 2020Tokyo

Kavli Affiliate: Yuji Tachikawa | First 5 Authors: Yasunori Lee, Yuji Tachikawa, , , | Summary: Global gauge anomalies in $6d$ associated with non-trivial homotopy groups $pi_6(G)$ for $G=SU(2)$, $SU(3)$, and $G_2$ were computed and utilized in the past. In the modern bordism point of view of anomalies, however, they come from the bordism groups […]

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The X-ray bursts of XTE J1739-285: a NICER sample

Posted by klaurent December 21, 2020MIT

Kavli Affiliate: Deepto Chakrabarty | First 5 Authors: Peter Bult, Diego Altamirano, Zaven Arzoumanian, Anna V. Bilous, Deepto Chakrabarty | Summary: In this work we report on observations with the Neutron Star Interior Composition Explorer of the known neutron star X-ray transient XTE J1739-285. We observed the source in 2020 February and March, finding it […]

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Optical Design of the EXperiment for Cryogenic Large-Aperture Intensity Mapping (EXCLAIM)

Posted by klaurent December 18, 2020Chicago

Kavli Affiliate: Jeffrey McMahon | First 5 Authors: Thomas Essinger-Hileman, Trevor Oxholm, Gage Siebert, Peter Ade, Christopher Anderson | Summary: This work describes the optical design of the EXperiment for Cryogenic Large-Aperture Intensity Mapping (EXCLAIM). EXCLAIM is a balloon-borne telescope that will measure integrated line emission from carbon monoxide (CO) at redshifts z < 1 […]

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Full parity phase diagram of a proximitized nanowire island

Posted by klaurent December 18, 2020Delft

Kavli Affiliate: L. P. Kouwenhoven | First 5 Authors: J. Shen, G. W. Winkler, F. Borsoi, S. Heedt, V. Levajac | Summary: We measure the charge periodicity of Coulomb blockade conductance oscillations of a hybrid InSb-Al island as a function of gate voltage and parallel magnetic field. The periodicity changes from $2e$ to $1e$ at […]

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Tunable ferromagnetism at non-integer filling of a moiré superlattice

Posted by klaurent December 18, 2020Berkeley

Kavli Affiliate: Michael F. Crommie | First 5 Authors: Guorui Chen, Aaron L. Sharpe, Eli J. Fox, Shaoxin Wang, Bosai Lyu | Summary: The flat bands resulting from moir’e superlattices in magic-angle twisted bilayer graphene (MATBG) and ABC-trilayer graphene aligned with hexagonal boron nitride (ABC-TLG/hBN) have been shown to give rise to fascinating correlated electron […]

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