Holographic QCD in medium: a bottom up approach

Jo, Kwanghyun; Lee, Bum-Hoon; Park, Chanyong; Sin, Sang-Jin

doi:10.1007/jhep06(2010)022

Cited by 34 publications

(26 citation statements)

References 35 publications

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“…Moreover, after an appropriate holographic renormalization, to guarantee the well-defined Legendre transformation of the thermodynamic energies [19,20,23,25] leads to the relation,…”

Section: Jhep05(2015)011mentioning

confidence: 99%

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Properties of holographic mesons on dense medium

Lee

Park

Nam

2015

J. High Energ. Phys.

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Abstract:We study the energy dispersions of holographic light mesons and their decay constants on dense nuclear medium. As the spatial momenta of mesons along the boundary direction increase, both observables of the mesons not only increase but also split according to the isospin charges. The decay constant of the negative meson is more large than that of the positive meson of the same type due to the chemical potentials of the background nucleons.

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“…Moreover, after an appropriate holographic renormalization, to guarantee the well-defined Legendre transformation of the thermodynamic energies [19,20,23,25] leads to the relation,…”

Section: Jhep05(2015)011mentioning

confidence: 99%

“…These works can be further generalized to the bottom-up models on dense medium [17][18][19][20][21][22][23][24][25][26][27][28]. The density in the dual boundary field theory implies to introduce a U (1) gauge…”

Section: Introductionmentioning

confidence: 99%

Properties of holographic mesons on dense medium

Lee

Park

Nam

2015

J. High Energ. Phys.

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“…If turning on a nonzero nuclear density, the dual geometry of the confining phase is gener-* Corresponding author. alized to the tAdS with a nonzero electric charge which describes the flavor charge of the dual QCD [18][19][20][21][22][23][24][25][26]. This geometry was called the thermal charged AdS (tcAdS) space [21].…”

Section: Introductionmentioning

confidence: 99%

Holographic nucleons in the nuclear medium

Lee

Park

2015

Physics Letters B

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We investigate the nucleon's rest mass and dispersion relation in the nuclear medium which is holographically described by the thermal charged AdS geometry. With this background, the chiral condensate plays an important role to determine the nucleon's mass in both the vacuum and the nuclear medium. It also significantly modifies the nucleon's dispersion relation. The nucleon's mass in the high density regime increases with density as expected, while in the low density regime it slightly decreases. We further study the splitting of the nucleon's energies caused by the isospin interaction with the nuclear medium.

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“…we shall not discuss this approach in this article. (ii) Bottom up approach: In this approach, one looks at the hadron phenomenology of QCD first and then attempts to build its 5D-gravity equivalent model in AdS 5 space-time by introducing appropriate fields and modifying the geometry of the extra dimension to reproduce the phenomenology [111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127]. We shall discuss in the following some elements of how the mass spectrum of scalar and vector particles are generated in the gravity dual models models.…”

Section: Correlation Functionsmentioning

confidence: 99%

Hadron physics in holographic QCD

Santra

Lombardo

Bonanno

2012

J. Phys.: Conf. Ser.

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Abstract.Hadron physics deals with the study of strongly interacting subatomic particles such as neutrons, protons, pions and others, collectively known as baryons and mesons. Physics of strong interaction is difficult. There are several approaches to understand it. However, in the recent years, an approach called, holographic QCD, based on string theory (or gauge-gravity duality) is becoming popular providing an alternative description of strong interaction physics. In this article, we aim to discuss development of strong interaction physics through QCD and string theory, leading to holographic QCD. IntroductionThe accepted theory of strong nuclear forces, or strong interactions, is Quantum Chromodynamics (QCD) [1], an Yang-Mills gauge theory with SU (3) gauge group. It can be studied at high energies using perturbation theory with enormous success, but, it is very hard, known to be intractable for the analytical analysis at low energies because of the strong coupling problem. The low energy regime of QCD contains the most interesting phenomena related to hadron physics, thus it is of great theoretical interest. Due to unavailability of suitable analytical tools for understanding QCD in the non-perturbative regime, QCD inspired heuristic models and approximation schemes, ranging from the bag models [2, 3] to chiral perturbation theory [4,5] have been used to get partial information about the dynamics of QCD in the strongly coupled regime. These models use simple frameworks for the analysis of some aspects of non-perturbative QCD, but give impressive results. Though the simplicity of the effective models make them very interesting and useful for the phenomenology of strong interactions, no rigorous relation has been established with these models to QCD in spite of much efforts. Another approach of studying non-perturbative QCD is by numerical simulation using lattice gauge theory or lattice QCD [6,7]. This procedure, though computationally intensive, appears to be successful for the calculation of static quantities such as the vacuum structure and the spectrum.Almost immediately after the discovery of asymptotic freedom in QCD, existence of a new phase of matter called Quark-Gluon-Plasma (QGP) was predicted [8,9] at very high temperature and density. QGP was expected to be made of de-confined free quarks and gluons. The programme of heavy ion collision at relativistic energies started to realize QGP experimentally. The experimental observations, over the last decade, in relativistic heavy ion collisions have revealed that QGP is, contrary to expectations, also a strongly coupled system instead of a gas

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Holographic QCD in medium: a bottom up approach

Cited by 34 publications

References 35 publications

Properties of holographic mesons on dense medium

Properties of holographic mesons on dense medium

Holographic nucleons in the nuclear medium

Hadron physics in holographic QCD

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