Journal
PHYSICS LETTERS B
Volume 817, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.physletb.2021.136287
Keywords
Gauge/gravity correspondence; Quark-gluon plasma; Linearly polarized photons
Funding
- PAPIIT, UNAM [IN113618]
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Using holographic methods, we show that photons emitted by strongly coupled plasma in a magnetic field are linearly polarized, except when they propagate along the field direction. The gravitational dual is constructed with a 5D truncation of 10-dimensional type IIB supergravity, including a scalar field and a constant magnetic field. Our statement implies that any photon produced in the modeled collision experiment must be in a polarization state parallel to the reaction plane.
We use holographic methods to show that photons emitted by a strongly coupled plasma subject to a magnetic field are linearly polarized regardless of their four-momentum, except when they propagate along the field direction. The gravitational dual is constructed using a 5D truncation of 10-dimensional type IIB supergravity, and includes a scalar field in addition to the constant magnetic one. In terms of the geometry of the collision experiment that we model, our statement is that any photon produced there has to be in its only polarization state parallel to the reaction plane. (C) 2021 The Author(s). Published by Elsevier B.V.
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