Oleg Vladimirovich Rudenko (on his 60th birthday)

Andreev, A. F.; Бескин, В. С.; Braginsky, V. B.; Ginzburg, Vitalii L.; Gulyaev, Yu. V.; Козлов, Валерий Васильевич; Лаверов, Н. П.; Mensky, M B; Okun, Lawrence; Рубаков, Валерий А.; Sadovnichy, V. A.; Фортов, В. Е.

doi:10.1070/pu2007v050n12abeh006496

Cited by 2 publications

(3 citation statements)

References 21 publications

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“…This part gives the dominant contribution to the potential, 2 , leading to a nonvanishing confining potential. The detailed calculation of the quark potential in such a background confirms the above estimation [7]. At finite temperature, the deconfinement phase transition indeed happens and exhibits interesting properties, see, e.g., [24,25].…”

Section: Comments On the Confinement Property Of The Modelsupporting

confidence: 67%

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Improved soft-wall model with a negative dilaton

Zuo

2010

Phys. Rev. D

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I propose to change the sign of the dilaton in the infrared~(IR) soft-wall AdS/QCD model, in order to implement confinement. The deformed model exhibits interesting properties, especially in describing chiral symmetry breaking. The expectation value of the scalar field $X$, which determines the quark mass and condensate, approaches a constant in the IR limit, rather than blows up in the original model. In contrast to the estimate in Ref. \cite{Shifman:2007xn}, this kind of solution will not lead to chiral symmetry restoration for highly-excited states, due to the property of the harmonic-oscillator equation. Instead, it will guarantee the Regge behavior of the axial meson spectrum, and also the pseudoscalar mesons. The value of the condensate can be fixed by requiring that the pion be massless in the chiral limit, but only under some approximation in the present model. We also find that, by relaxing the IR boundary conditions, the unphysical massless state in the vector channel can be eliminated.Comment: A modification of the boundary condition is proposed to eliminate the unphysical "pion" mode. Version to appear in Physical Review

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Section: Comments On the Confinement Property Of The Modelsupporting

confidence: 67%

“…In Ref. [7] an alternative deformation factor e z 2 was shown to result confining potential between heavy quarks. It is just this increasing exponential which guarantees the confining property, according to the general criterion in Ref.…”

Section: Motivationmentioning

confidence: 99%

Improved soft-wall model with a negative dilaton

Zuo

2010

Phys. Rev. D

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“…The factor i is used here because we are dealing with Euclidean signature [15,16]. The boundary condition V τ (z = z h ) = 0 for AdS black hole solution is needed to ensure the regularity of the solution at the horizon.…”

Section: Soft Wall Modelmentioning

confidence: 99%

THERMODYNAMICS OF SOFT WALL AdS/QCD AT FINITE CHEMICAL POTENTIAL

Sachan

Siwach

2012

Mod. Phys. Lett. A

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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 the models.

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Oleg Vladimirovich Rudenko (on his 60th birthday)

Cited by 2 publications

References 21 publications

Improved soft-wall model with a negative dilaton

Improved soft-wall model with a negative dilaton

THERMODYNAMICS OF SOFT WALL AdS/QCD AT FINITE CHEMICAL POTENTIAL

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