Dynamical AdS/Yang-Mills model

Bartz, Sean P.; Dhumuntarao, Aditya; Kapusta, Joseph I.

doi:10.1103/physrevd.98.026019

Cited by 12 publications

(14 citation statements)

References 31 publications

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“…We could generally assume that all f 2 j (z) are different. This option is not theoretically well-motivated as the dilaton field is a certain entity of the string theory, and, for instance, in the models of dynamically generated SW it comes as a unique solution of Einstein equations emerging from a particular graviton-dilaton 5D action (see the works [53] and [54] for the interesting results concerning glueballs in the models of this type). But phenomenologically, this only seems natural, and, for example, the case of κ sc = κ v in a standard SW is a feature that may be or may be not relevant in the physical model we want to study.…”

Section: Concluding Discussionmentioning

confidence: 99%

Glueballs and deconfinement temperature in AdS/QCD

Afonin

Katanaeva

2018

Phys. Rev. D

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We put forward an alternative way to estimate the deconfinement temperature in bottom-up holographic models. The deconfinement in anti-de Sitter (AdS)/QCD is related to the Hawking-Page phase transition, in which the critical Hawking temperature is identified with the deconfinement one in the gauge theory. The numeric estimation of the latter is only possible when the parameters of a five-dimensional dual model are previously determined from consistency with other physical aspects, standardly, providing a description of the QCD resonances. The traditional way to fix parameters in the simplest AdS/QCD models is to reproduce the mass of the ρ meson or the slope of the approximate radial Regge trajectory of the ρ excitations. Motivated by a general idea that the slope value originates in gluodynamics, we propose calculating the deconfinement temperature using the trajectory of scalar glueballs. We consider several holographic models and use the recent idea of isospectral potentials to make an additional check of the relevance of our approach. It is demonstrated that different models from an isospectral family (i.e. the models leading to identical predictions for spectrum of hadrons with fixed quantum numbers) result in different predictions for the deconfinement temperature. This difference is found to be quite small in the scalar glueball channel but very large in the vector meson channel. The observed stability in the former case clearly favours the choice of the glueball channel for thermodynamic predictions in AdS/QCD models. For a balanced approach, we argue that either assuming f 0 (1500) to have a dominating component of 0 ++ glueball or accepting the idea of the universality in the radial Regge trajectories of light non-strange vector mesons one can reproduce the results for the deconfinement temperature obtained before in the lattice simulations in the background of non-dynamical quarks.

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Section: Concluding Discussionmentioning

confidence: 99%

Glueballs and deconfinement temperature in AdS/QCD

Afonin

Katanaeva

2018

Phys. Rev. D

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“…Recently two of us proposed a dynamical two field model in order to reproduce the scalar glueball mass spectrum determined by lattice calculations at zero temperature [15,16]. After incorporating backreactions, we found a tachyonic mode in the spectrum.…”

Section: Introductionmentioning

confidence: 81%

Randall-Sundrum model with a dilaton field at finite temperature

2020

Self Cite

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We find exact finite temperature solutions to d = 5 Einstein-dilaton gravity with black branes and a Randall-Sundrum 3-brane. We show that there exists a unique generating superpotential for these models. The location of the black brane and the associated Hawking temperature depend on the value of the the 3-brane tension while other parameters are held fixed. The thermodynamics of these solutions are presented, from which we show that the entropy satisfies S < Vol(R 3 )/4G 5 . We demonstrate that in a certain limit the gauge dual of this theory effectively reduces to N = 4 SYM at finite temperature on S 1 × R 3 . arXiv:2001.00038v1 [hep-th]

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“…Since QCD thermodynamics is not driven by vector mesons alone, another step is adding flavor by including the pseudo-scalar and scalar sectors via the bulk fundamental fields and its vacuum expectation values. Some works point directly in this direction: the authors of [92] introduce a second scalar field (glue ball field) and solve the field equations for the case T = 0; many other investigate the behavior of hadron species in a given background without back reaction (see e.g. [73,82,[93][94][95][96][97][98][99]).…”

Section: Summary and Discussionmentioning

confidence: 99%

Phase structures emerging from holography with Einstein-gravity-dilaton models at finite temperature

Zöllner

Kämpfer

2020

Eur. Phys. J. Plus

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Asymptotic AdS Riemann space-times in five dimensions with a black brane (horizon) sourced by a fully back-reacted scalar field (dilaton) offer -via the holographic dictionary -various options for the thermodynamics of the flat four-dimensional boundary theory, uncovering Hawking-Page, first-order and second-order phase transitions up to a cross-over or featureless behavior. The relation of these phase structures to the dilaton potential is clarified and illustrating examples are presented. Having in mind applications to QCD we study vector mesons in the probe limit with the goal to figure out conditions for forming Regge type series of radial excitations and address the issue of meson melting.

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Dynamical AdS/Yang-Mills model

Cited by 12 publications

References 31 publications

Glueballs and deconfinement temperature in AdS/QCD

Glueballs and deconfinement temperature in AdS/QCD

Randall-Sundrum model with a dilaton field at finite temperature

Phase structures emerging from holography with Einstein-gravity-dilaton models at finite temperature

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