HOLOGRAPHIC EQUILIBRATION IN CONFINING GAUGE THEORIES

by Tuna Demircik

at Particles and Fields Seminar

Mon, 23 Oct 2017, 14:00
Physics building (#54) room 207

Abstract

We investigate the effect of external magnetic fields on equilibration in the improved holographic QCD theory in the deconfined phase using the gauge gravity duality 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 The talk is mainly based on the 1 1 : T Demircik and U Gursoy Holographic equilibration in confining gauge theories under external magnetic fields Nucl Phys vol B919 pp 384 403 2017

Created on 15-10-2017 by Bar Lev, Yevgeny (ybarlev)
Updaded on 15-10-2017 by Bar Lev, Yevgeny (ybarlev)