RG flow of AC conductivity in soft wall model of QCD

We study the Renormalization Group (RG) flow of AC conductivity in soft wall model of holographic QCD. We consider the charged black hole metric and the explicit form of AC conductivity is obtained at the cutoff surface. We plot the numerical solution of conductivity flow as a function of radial coordinate. The equation of gauge field is also considered and the numerical solution is obtained for AC conductivity as a function of frequency. The results for AC conductivity are also obtained for different values of chemical potential and Gauss–Bonnet couplings.

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Thermodynamics of soft wall model of AdS/QCD in Einstein-Maxwell-Gauss-Bonnet Gravity

Canadian Journal of Physics ◽

10.1139/cjp-2020-0226 ◽

2020 ◽

Author(s):

Shobhit Sachan ◽

Sanjay Siwach

Keyword(s):

Black Hole ◽

Transition Temperature ◽

Chemical Potential ◽

Space Time ◽

Hard Wall ◽

Wall Model ◽

Bonnet Gravity ◽

First Order ◽

Soft Wall Model ◽

Soft Wall

We investigate the thermodynamics of confinement/deconfinement transition in soft wall model of QCD with Gauss-Bonnet corrections using AdS/CFT correspondence. In bulk AdS space-time the transition is geometric and is known as Hawking-Page transition. The Hawking-Page transition between two geometries, namely charged AdS black hole and thermally charged AdS have been studied with Gauss-Bonnet corrections up-to first order. The Gauss-Bonnet coupling modifies the transition temperature of the system, but qualitative features remain unchanged. We obtain the curves between chemical potential and transition temperature for different values of Gauss-Bonnet couplings. We find that there exist a point in μ-T plane where lines with different value of Gauss-Bonnet coupling cross each other. This point may be the onset of the transition from first order to cross over behavior. The results are compared with that of the hard wall model.

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Transport Properties with Gauss-Bonnet corrections using soft-wall model of holographic QCD

10.22323/1.282.0802 ◽

2017 ◽

Author(s):

Neha Bhatnagar

Keyword(s):

Transport Properties ◽

Wall Model ◽

Soft Wall Model ◽

Soft Wall ◽

Holographic Qcd

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THERMODYNAMICS OF SOFT WALL AdS/QCD AT FINITE CHEMICAL POTENTIAL

Modern Physics Letters A ◽

10.1142/s0217732312501635 ◽

2012 ◽

Vol 27 (28) ◽

pp. 1250163 ◽

Cited By ~ 5

Author(s):

SHOBHIT SACHAN ◽

SANJAY SIWACH

Keyword(s):

Chemical Potential ◽

High Temperature Phase ◽

Temperature Phase ◽

Wall Model ◽

Soft Wall Model ◽

Soft Wall ◽

Dimensional Gravity ◽

The Difference ◽

Two Phases ◽

Low Temperature Phase

We study the thermodynamics of soft wall model in AdS/QCD framework. The low temperature phase of QCD is described by thermal AdS and high temperature phase by AdS black hole solution of five-dimensional gravity with negative cosmological constant. The chemical potential is introduced via the solution of U(1) vector field in the bulk. The difference of action densities in two phases is studied and the results are compared with hard wall model. The quark number susceptibility is also calculated in both models.

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NUCLEON RESONANCES AND GPDS IN AdS/QCD

International Journal of Modern Physics Conference Series ◽

10.1142/s2010194514600660 ◽

2014 ◽

Vol 26 ◽

pp. 1460066 ◽

Cited By ~ 1

Author(s):

ALFREDO VEGA ◽

IVAN SCHMIDT ◽

THOMAS GUTSCHE ◽

VALERY E. LYUBOVITSKIJ

Keyword(s):

Roper Resonance ◽

Wall Model ◽

Nucleon Resonances ◽

Soft Wall Model ◽

Nucleon Spectrum ◽

Soft Wall

We discuss an holographic soft wall model to describe nucleon properties. We pay special attention to nucleon spectrum, GPDs in the skewness case for nucleons and electroproduction of the N (1440) Roper resonance in soft-wall AdS/QCD.

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