Holographic equilibration in confining gauge theories under external magnetic fields

T. Demircik; U. Gürsoy

doi:10.1016/j.nuclphysb.2017.03.020

Holographic equilibration in confining gauge theories under external magnetic fields

T. Demircik, U. Gürsoy

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

We investigate the effect of external magnetic fields on equilibration in the improved holographic QCD theory in the deconfined phase using the AdS/CFT correspondence. In particular we calculate the quasinormal mode spectra in the corresponding black brane solutions and study their dependence on temperature, momentum and magnetic field, both in the scalar and the shear channels. We find complex patterns in the motion of quasinormal modes on the complex plane, including certain cross overs between the lowest lying modes under varying magnetic field, momentum and temperature. We also discover a critical value of the magnetic field B_c above which the hydrodynamic approximation breaks down, as the imaginary part of the first excited quasi-normal mode in the shear channel becomes smaller than that of the hydro mode.

Original language	English
Pages (from-to)	384-403
Number of pages	20
Journal	Nuclear Physics B
Volume	919
DOIs	https://doi.org/10.1016/j.nuclphysb.2017.03.020
State	Published - 1 Jun 2017
Externally published	Yes

ASJC Scopus subject areas

Nuclear and High Energy Physics

Access to Document

10.1016/j.nuclphysb.2017.03.020

Cite this

@article{346d0378128f4379af0d3129fed54161,

title = "Holographic equilibration in confining gauge theories under external magnetic fields",

abstract = "We investigate the effect of external magnetic fields on equilibration in the improved holographic QCD theory in the deconfined phase using the AdS/CFT correspondence. In particular we calculate the quasinormal mode spectra in the corresponding black brane solutions and study their dependence on temperature, momentum and magnetic field, both in the scalar and the shear channels. We find complex patterns in the motion of quasinormal modes on the complex plane, including certain cross overs between the lowest lying modes under varying magnetic field, momentum and temperature. We also discover a critical value of the magnetic field Bc above which the hydrodynamic approximation breaks down, as the imaginary part of the first excited quasi-normal mode in the shear channel becomes smaller than that of the hydro mode.",

author = "T. Demircik and U. G{\"u}rsoy",

note = "Publisher Copyright: {\textcopyright} 2017 The Author(s)",

year = "2017",

month = jun,

day = "1",

doi = "10.1016/j.nuclphysb.2017.03.020",

language = "English",

volume = "919",

pages = "384--403",

journal = "Nuclear Physics B",

issn = "0550-3213",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Holographic equilibration in confining gauge theories under external magnetic fields

AU - Demircik, T.

AU - Gürsoy, U.

PY - 2017/6/1

Y1 - 2017/6/1

N2 - We investigate the effect of external magnetic fields on equilibration in the improved holographic QCD theory in the deconfined phase using the AdS/CFT correspondence. In particular we calculate the quasinormal mode spectra in the corresponding black brane solutions and study their dependence on temperature, momentum and magnetic field, both in the scalar and the shear channels. We find complex patterns in the motion of quasinormal modes on the complex plane, including certain cross overs between the lowest lying modes under varying magnetic field, momentum and temperature. We also discover a critical value of the magnetic field Bc above which the hydrodynamic approximation breaks down, as the imaginary part of the first excited quasi-normal mode in the shear channel becomes smaller than that of the hydro mode.

AB - We investigate the effect of external magnetic fields on equilibration in the improved holographic QCD theory in the deconfined phase using the AdS/CFT correspondence. In particular we calculate the quasinormal mode spectra in the corresponding black brane solutions and study their dependence on temperature, momentum and magnetic field, both in the scalar and the shear channels. We find complex patterns in the motion of quasinormal modes on the complex plane, including certain cross overs between the lowest lying modes under varying magnetic field, momentum and temperature. We also discover a critical value of the magnetic field Bc above which the hydrodynamic approximation breaks down, as the imaginary part of the first excited quasi-normal mode in the shear channel becomes smaller than that of the hydro mode.

UR - http://www.scopus.com/inward/record.url?scp=85017006398&partnerID=8YFLogxK

U2 - 10.1016/j.nuclphysb.2017.03.020

DO - 10.1016/j.nuclphysb.2017.03.020

M3 - Article

AN - SCOPUS:85017006398

SN - 0550-3213

VL - 919

SP - 384

EP - 403

JO - Nuclear Physics B

JF - Nuclear Physics B

ER -

Holographic equilibration in confining gauge theories under external magnetic fields

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this