Improved soft-wall model with a negative dilaton

Zuo, Fang

doi:10.1103/physrevd.82.086011

Cited by 39 publications

(36 citation statements)

References 35 publications

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“…The positive dilaton solution has interesting physical implications, since it leads to a confining potential between heavy quarks [25] and to a convenient framework for describing chiral symmetry breaking. [26] It also leads to the identification of a nonperturbative effective strong coupling α s and β-functions which are in agreement with available data and lattice simulations. [27] In the presence of a dilaton profile exp(+κ 2 z 2 ) the wave equation for a spin J mode Φ(z) µ 1 ···µ J is given by [28] …”

Section: A Soft-wall Ads/qcd Model For Mesonssupporting

confidence: 80%

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Applications of AdS∕QCD and Light-Front Holography to Baryon Physics

Brodsky¹,

Téramond²,

Khemchandani³

et al. 2011

AIP Conference Proceedings

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The correspondence between theories in anti-de Sitter space and field theories in physical space-time leads to an analytic, semiclassical model for stronglycoupled QCD which has scale invariance at short distances and color confinement at large distances. These equations, for both mesons and baryons, give a very good representation of the observed hadronic spectrum, including a zero mass pion. Light-front holography allows hadronic amplitudes in the AdS fifth dimension to be mapped to frame-independent light-front wavefunctions of hadrons in physical space-time, thus providing a relativistic description of hadrons at the amplitude level. The meson and baryon wavefunctions derived from light-front holography and AdS/QCD also have remarkable phenomenological features, including predictions for the electromagnetic form factors and decay constants. The approach can be systematically improved using light-front Hamiltonian methods. Some novel features of QCD for baryon physics are also discussed.

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Section: A Soft-wall Ads/qcd Model For Mesonssupporting

confidence: 80%

“…As for the case of the mesons Eq. (10) we write the LF Hamiltonian H ν LF = Π † ν Π ν + C and chose the same value for C: C = −4κ 2 , effectively modifying the wave equation (26). With this choice for C the LF Hamiltonian is…”

mentioning

confidence: 99%

Applications of AdS∕QCD and Light-Front Holography to Baryon Physics

Brodsky¹,

Téramond²,

Khemchandani³

et al. 2011

AIP Conference Proceedings

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show abstract

“…From viewpoint of holography, the AdS/CFT correspondence can describe a "brocken conformal symmetry", when one adds a proper deformed warp factor in front of the AdS 5 metric structure [17,[42][43][44][45][46][47][48][49][50][51][52][53][54][55][56][57][58][59][60][61]. So, e cz 2 is a positive quadratic correction with z, the fifth dimension.…”

Section: Jhep06(2015)204mentioning

confidence: 99%

The effects of deformation parameter on thermal width of moving quarkonia in plasma

Sadeghi

Tahery

2015

J. High Energ. Phys.

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In general we can say that the thermal width of quarkonia corresponds to imaginary part of it's potential. Gravity dual of theories give explicit form of potential as V QQ . Since there is an explicit formula for ImV QQ one can consider different gravity duals and study the results of contribution of various parameters. Variable gravity duals of moving pair in plasma have different results for potential. Our paper shows that deformation parameter c in warp factor leads to new results that we present them for arbitrary angles of the pair with respect to it's velocity. We compare our results with the case that no deformation parameter is in metric background. We will see that the thermal width of the pair increases with increasing deformation parameter. Also, for nonzero values of deformation parameter the pair feels moving plasma in all distances. In addition our results indicate that contribution of deformation parameter leads to larger dissociation length for the moving pair reverse to the effect of the pair's velocity in the plasma.

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“…This property was exploited in Ref. [29] for a derivation of the linear confinement potential from the holographic approach and later triggered an active use of the SW models with inverse dilaton profile (see, e.g., [30,31]) in spite of a formal existence of massless vector mode [32]. Thus we see that the black hole and Wilson loop criteria for confinement are in conflict in the simplest version of the SW model.…”

Section: Discussionmentioning

confidence: 99%

Holographic estimates of the deconfinement temperature

Katanaeva¹,

Afonin²

2016

AIP Conference Proceedings

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The problem of self-consistent estimates of the deconfinement temperature T c in the framework of the bottom-up holographic approach to QCD is scrutinized. It is shown that the standard soft wall model gives T c for the planar gluodynamics around 260 MeV in a good agreement with the lattice data. The extensions of the soft wall model adjusted for descriptions of realistic meson spectra result in a broad range of the predictions. This uncertainty is related with a poor experimental information on the radially excited mesons.

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Improved soft-wall model with a negative dilaton

Cited by 39 publications

References 35 publications

Applications of AdS∕QCD and Light-Front Holography to Baryon Physics

Applications of AdS∕QCD and Light-Front Holography to Baryon Physics

The effects of deformation parameter on thermal width of moving quarkonia in plasma

Holographic estimates of the deconfinement temperature

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