Probing the pattern of holographic thermalization with photons

Steineder, Dominik; Stricker, Stefan A.; Vuorinen, Aleksi

doi:10.48550/arxiv.1304.3404

Cited by 20 publications

(32 citation statements)

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“…In order to investigate the thermalization process, one should construct a proper model in gravity [18]. Now, there have been many models to study the non-equilibrium thermalization process [19,20,21,22,23,24,25,26,27,28,29,30,31]. Among them, one elegant model is presented in [30,31], where the two-point correlation function, Wilson loop, and entanglement entropy were used to detect the thermalization.…”

Section: Introductionmentioning

confidence: 99%

Holographic thermalization in noncommutative geometry

Zeng¹,

Liu²,

Liu³

2015

Physics Letters B

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Gravitational collapse of a shell of dust in noncommutative geometry is probed by the renormalized geodesic length, which is dual to probe the thermalization by the two-point correlation function in the dual conformal field theory. We find that larger the noncommutative parameter is, longer the thermalization time is, which implies that the large noncommutative parameter delays the thermalization process. We also investigate how the noncommutative parameter affects the thermalization velocity and thermalization acceleration.Comment: some materials have been delete

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Section: Introductionmentioning

confidence: 99%

Holographic thermalization in noncommutative geometry

Zeng¹,

Liu²,

Liu³

2015

Physics Letters B

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“…Going beyond the quasi-static approximation will be an § See Refs. [58,59,60,61] for works on similar geometries with zero charge density. ¶ The effects of vector and axial charge density will be the same in our model.…”

Section: Introductionmentioning

confidence: 99%

Out-of-equilibrium chiral magnetic effect at strong coupling

Lin

Yee

2013

Phys. Rev. D

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We study the charge transports originating from triangle anomaly in out-of-equilibrium conditions in the framework of AdS/CFT correspondence at strong coupling, to gain useful insights on possible charge separation effects that may happen in the very early stages of heavy-ion collisions. We first construct a gravity background of a homogeneous mass shell with a finite (axial) charge density gravitationally collapsing to a charged black hole, which serves as a dual model for out-of-equilibrium charged plasma undergoing thermalization. We find that a finite charge density in the plasma slows down the thermalization. We then study the out-of-equilibrium properties of chiral magnetic effect and chiral magnetic wave in this background. As the medium thermalizes, the magnitude of chiral magnetic conductivity and the response time delay grow. We find a dynamical peak in the spectral function of retarded current correlator, which we identify as an out-of-equilibrium chiral magnetic wave. The group velocity of the out-of-equilibrium chiral magnetic wave is shown to receive a dominant contribution from a nonequilibrium effect, making the wave moving much faster than in the equilibrium, which may enhance the charge transports via triangle anomaly in the early stage of heavy-ion collisions.1 The above relaxation time formula is highly sensitive to s : for example, s ¼ 0:3 reduces it to R ¼ 1:3 fm. However, our main purpose of this work is about early time of t & 1 fm, so we can still neglect sphaleron relaxation for our work. We also stress that the main sources of the axial charge in such early time should be color electric/magnetic fields from glasma [4,5].

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“…One way out is to play with some toy models, which may be too simple to model the realistic systems but subject to analytic control such as to provide us with some insights into the universal aspects of far-from-equilibrium physics for strongly coupled systems [1,2,3,4,5,6,7,8]. Among others, very recently the authors in [9] as well as [10] have used a neutral AdS-Vaidya black hole as the bulk geometry to probe the scale-dependence of holographic thermalization following a quench via calculations of two-point correlation functions, Wilson loops, and entanglement entropy, which can further be evaluated in the saddle point approximation in terms of geodesics, minimal surfaces, and minimal volume individually.…”

Section: Introductionmentioning

confidence: 99%

Holographic thermalization in Gauss–Bonnet gravity

Zeng

Liu

2013

Physics Letters B

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In the spirit of AdS/CFT correspondence, we study the thermalization of a dual conformal field theory to Gauss-Bonnet gravity by modeling a thin-shell of dust that interpolates between a pure AdS and a Gauss-Bonnet AdS black brane. The renormalized geodesic length and minimal area surface, which in the dual conformal field theory correspond to twopoint correlation function and expectation value of Wilson loop, are investigated respectively as thermalization probes. The result shows that as the Gauss-Bonnet coefficient increases, the thermalization time decreases for both the thermalization probes, which can also be confirmed by studying the motion profile of the geodesic and minimal area surface. In addition, for both the renormalized geodesic length and minimal area surface, there is an overlapped region for a fixed boundary separation, which implies that the Gauss-Bonnet coupling constant has little effect on the thermalization probes there.

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Probing the pattern of holographic thermalization with photons

Cited by 20 publications

References 0 publications

Holographic thermalization in noncommutative geometry

Holographic thermalization in noncommutative geometry

Out-of-equilibrium chiral magnetic effect at strong coupling

Holographic thermalization in Gauss–Bonnet gravity

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