Electromagnetic properties of the nucleon and the Roper resonance in soft-wall AdS/QCD at finite temperature

Gutsche, Thomas; Lyubovitskij, Valery E.; Schmidt, Ivan

doi:10.48550/arxiv.1906.08641

Cited by 6 publications

(18 citation statements)

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“…The preceding study of nucleon resonances in AdS soft-wall approaches focused on the nucleon-Roper transition, see Refs. [9]- [14]. First, in Ref.…”

Section: Introductionmentioning

confidence: 99%

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$γN \to N^*(1535)$ transition in soft-wall AdS/QCD

Gutsche,

Lyubovitskij,

Schmidt

2019

Preprint

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“…The preceding study of nucleon resonances in AdS soft-wall approaches focused on the nucleon-Roper transition, see Refs. [9]- [14]. First, in Ref.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, in Ref. [14] we presented a description of electromagnetic properties of the nucleon and the Roper at small finite temperatures using the formalism developed in Refs. [15].…”

Section: Introductionmentioning

confidence: 99%

$γN \to N^*(1535)$ transition in soft-wall AdS/QCD

Gutsche,

Lyubovitskij,

Schmidt

2019

Preprint

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“…Since that time (2005) a great number of various bottom-up holographic models for strongly coupled QCD have been proposed and applied to description of the hadron phenomenology. The number of papers on this subject is enormous, among the most recent developments one can mention the construction of various new models partly describing the hadron spectrum [16][17][18][19][20][21][22][23][24][25][26], hadron structure [27][28][29][30][31][32][33][34][35] including the deep inelastic scattering [26,[36][37][38][39][40], and a very large field of QCD thermodynamics [41][42][43][44][45][46][47][48][49][50][51][52] in which even some elements of information theory can be exploited (see, e.g., the recent Refs. [53,54] and references therein).…”

Section: Introductionmentioning

confidence: 99%

Towards a theory of bottom-up holographic models for linear Regge trajectories of light mesons

Afonin

Solomko

2022

Eur. Phys. J. C

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We advance in constructing a bottom-up holographic theory of linear meson Regge trajectories that generalizes and unites into one logical framework various bottom-up holographic approaches proposed in the past and scattered in the literature. The starting point of the theory is a quadratic in fields holographic five-dimensional action in which the Poincaré invariance along the holographic coordinate is violated in the most general way compatible with the linear Regge behavior of the discrete spectrum in four dimensions. It is further demonstrated how different Soft Wall (SW) like holographic models existing in the literature plus some new ones emerge from our general setup. Various interrelations between the emerging models are studied. These models include the known SW models with different sign in the exponential background, the SW models with certain generalized backgrounds, with modified metrics, and No Wall models with 5D mass depending on the holographic coordinate in a simple polynomial way. We argue that this dependence allows to describe the effects caused by the main non-local phenomena of strongly coupled 4D gauge theory, the confinement and chiral symmetry breaking, in terms of a local 5D dual field theory in the AdS space. We provide a detailed comparison of our approach with the Light Front holographic QCD, with the spectroscopic predictions of the dual Veneziano like amplitudes, and with the experimental Regge phenomenology. We apply our general approach to a holographic study of confinement, chiral symmetry breaking, and the pion form factor.

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“…Temperature dependencies of the quantities describing the hadrons in the nuclear medium are investigated in the framework of different approaches and models. The holographic soft-wall model is one of good tools for the studies in the medium and this model was applied for solving different kinds of problems: determining of the temperature influence on in-medium quantities such as screening mass [13], hadron form factors [14][15][16][17], quarkonium [18], decay constants [19],…”

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confidence: 99%

“…In the approach in Refs. [14][15][16]24] the sot-wall model was modified by considering the dilaton field, which is responsible for the chiral and conformal symmetries breaking in the model, as a thermal one, since this field is in the thermal medium. This field is related by the chiral condensate and so, the thermalization of dilaton field physically means that, the authors in fact take into account the temperature dependence of the chiral quark condensate in the medium.…”

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confidence: 99%

$a_{1}$ meson-nucleon coupling constant at finite temperature from the soft-wall AdS/QCD model

Mamedov,

Taghiyeva

2021

Preprint

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We continue to study the temperature dependence of the meson-nucleon coupling constants and consider the axial-vector a 1 meson case. Profile functions for the axial-vector and fermion fields in the AdS-Schwarzschild metric are presented in the framework of the soft-wall AdS/QCD model with thermal dilaton field. Bulk interaction Lagrangian are constructed for the interacting fermion-axial-vector-thermal dilaton fields system. For the g a 1 N N coupling constant is obtained an integral representation and the temperature dependence of this coupling is analyzed numerically. I. INTRODUCTIONThe AdS/CFT correspondence is one of the most important discoveries in the modern theoretical physics. This principle states the equivalence of two different physical theories, a gravitational theory in the bulk of AdS space-time and a quantum field theory on the boundary of this spacetime. Moreover, the duality between the two theories is the strong-weak duality, which means that it relates the strong coupling sector of one theory to the weak coupling sector of the other one [1][2][3][4]. Further this duality was adapted to describe the low-energy dynamics of QCD and called as AdS/QCD [5-9]. There are two approaches in AdS/QCD: top-down and bottom-up ones.

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Electromagnetic properties of the nucleon and the Roper resonance in soft-wall AdS/QCD at finite temperature

Cited by 6 publications

References 0 publications

$γN \to N^*(1535)$ transition in soft-wall AdS/QCD

$γN \to N^*(1535)$ transition in soft-wall AdS/QCD

Towards a theory of bottom-up holographic models for linear Regge trajectories of light mesons

$a_{1}$ meson-nucleon coupling constant at finite temperature from the soft-wall AdS/QCD model

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