Holographic anisotropic background in 5D Einstien–Gauss–Bonnet gravity

Sajadi, S. N.

doi:10.1140/epjc/s10052-023-11187-6

Cited by 2 publications

(1 citation statement)

References 56 publications

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“…Therefore, we depicted in the left panel of Fig. 3 the heat capacity of the system C V (red line) in terms of the horizon radius z h to investigate where the Jacobian vanishes (changes its sign) [52,59] and the temperature T (blue line) as a function of horizon radius z h . A very interesting observation in the left panel of Fig.…”

Section: Free Energy and Phase Transitionmentioning

confidence: 99%

Meson excitation time as a probe of holographic critical point

Hajilou

2023

Eur. Phys. J. C

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We study the time evolution of expectation value of Wilson loop as a non-local observable in a strongly coupled field theory with a critical point at finite temperature and nonzero chemical potential, which is dual to an asymptotically AdS charged black hole via gauge/gravity duality. Due to inject of energy into the plasma, the temperature and a chemical potential increase to finite values and the plasma experiences an out-of-equilibrium process. By defining meson excitation time $$t_{ex}$$ t ex as a time at which the meson falls into the final excited state, we investigate the behavior of $$t_{ex}$$ t ex near the critical point as the system evolves towards the critical point. We observe that by increasing the interquark distance the dynamical critical exponent increases smoothly. Also, we obtain for slow quenches different values of the dynamical critical exponent, although for fast quenches our result for the dynamical critical exponent is in agreement with the one that is reported for studying the quasi-normal modes. Consequently, this indicates that in this model for fast quenches and small values of interquark distances the gauge invariant Wilson loop is a good non-local observable to probe the critical point.

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Section: Free Energy and Phase Transitionmentioning

confidence: 99%

Meson excitation time as a probe of holographic critical point

Hajilou

2023

Eur. Phys. J. C

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Strongly-coupled anisotropic gauge theories and holography in 5D Einstein–Gauss–Bonnet gravity

Sajadi,

Safari

2023

Eur. Phys. J. C

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In this paper we study uncharged, non-conformal and anisotropic systems with strong interactions using the gauge-gravity duality by considering Einstein-Quadratic-Axion-Dilaton action in five dimension. In fact we would like to gain insight into the influence of higher derivative gravity on the QCD system. At finite temperature, we obtain an anisotropic black brane solution to a 5D Einstein–Gauss–Bonnet-Axion-Dilaton system. The system has been investigated and the effect of the parameter of theory has been considered. The blackening function supports the thermodynamical phase transition between small/large and AdS/large black brane for suitable parameters. We also study transport and diffusion properties, and observe in particular that the butterfly velocity that characterizes both diffusion and growth of chaos transverse to the anisotropic direction saturates a constant value in the IR which can exceed the bound given by the conformal value. We also determine the imaginary part of the heavy quark potential in a strongly coupled plasma dual to Gauss–Bonnet gravity.

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Holographic anisotropic background in 5D Einstien–Gauss–Bonnet gravity

Cited by 2 publications

References 56 publications

Meson excitation time as a probe of holographic critical point

Meson excitation time as a probe of holographic critical point

Strongly-coupled anisotropic gauge theories and holography in 5D Einstein–Gauss–Bonnet gravity

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