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55 papers · 1 filter
Cosmetic surgery in L-spaces and nugatory crossings
Tye Lidman, Allison H. Moore
The cosmetic crossing conjecture (also known as the "nugatory crossing conjecture") asserts that the only crossing changes that preserve the oriented isotopy class of a knot in the…
Extremal rays and automorphisms of holomorphic symplectic varieties
Brendan Hassett, Yuri Tschinkel
We survey recent results on ample cones and birational contractions of holomorphic symplectic varieties of K3 type, focusing on explicit constructions and concrete examples.
Optimal Electron Energies for Driving Chromospheric Evaporation in Solar Flares
Jeffrey Reep, Stephen Bradshaw, David Alexander
In the standard model of solar flares, energy deposition by a beam of electrons drives strong chromospheric evaporation leading to a significantly denser corona and much brighter e…
Signaling Design of Two-Way MIMO Full-Duplex Channel: Optimality Under Imperfect Transmit Front-End Chain
Shuqiao Jia, Behnaam Aazhang
We derive the optimal signaling for a multiple input multiple output (MIMO) full-duplex two-way channel under the imperfect transmit front-end chain. We characterize the two-way ra…
Photon-Induced Spin-Orbit Coupling in Ultracold Atoms inside Optical Cavity
Lin Dong, Chuanzhou Zhu, Han Pu
We consider an atom inside a ring cavity, where a plane-wave cavity field together with an external coherent laser beam induces a two-photon Raman transition between two hyperfine…
Observation of charge asymmetry dependence of pion elliptic flow and the possible chiral magnetic wave in heavy-ion collisions
STAR Collaboration, L. Adamczyk, J. K. Adkins +327
We present measurements of and elliptic flow, , at midrapidity in Au+Au collisions at 200, 62.4, 39, 27, 19.6, 11.5 and 7.7 GeV, as a func…