In-medium hadronic spectral functions through the soft-wall holographic model of QCD

Colangelo, P.; Giannuzzi, Floriana; Nicotri, S.

doi:10.1007/jhep05(2012)076

Cited by 54 publications

(33 citation statements)

References 72 publications

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“…The geometry that corresponds to a thermal medium with a finite density µ was studied in refs. [11][12][13]. It is a 5-d anti-de Sitter charged black hole space-time with the metric…”

Section: Holographic Model For Heavy Vector Mesonsmentioning

confidence: 99%

Quasinormal modes for heavy vector mesons in a finite density plasma

Braga

Mata

2020

Physics Letters B

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There are strong indications that ultra-relativistic heavy ion collisions, produced in accelarators, lead to the formation of a new state of matter: the quark gluon plasma (QGP). This deconfined QCD matter is expected to exist just for very short times after the collision. All the information one can get about the plasma is obtained from the particles that reach the detectors. Among them, heavy vector mesons are particularly important. The abundance of cc and bb states produced in a heavy ion collision is a source of information about the plasma. In contrast to the light mesons, that completely dissociate when the plasma is formed, heavy mesons presumably undergo a partial thermal dissociation. The dissociation degree depends on the temperature and also on the presence of magnetic fields and on the density (chemical potential). So, in order to get information about the plasma out of the quarkonium abundance data, one needs to resort to models that provide the dependence of the dissociation degree on these factors. Holographic phenomenological models provide a nice description for charmonium and bottomonium quasi-states in a plasma. In particular, quasi-normal modes associated with quarkonia states have been studied recently for a plasma with magnetic fields. Here we extend this analysis of quasinormal models to the case when charmonium and bottomonium are inside a plasma with finite density. The complex frequencies obtained are then compared with a Breit Wigner approximation for the peaks of the corresponding thermal spectral functions, in order to investigate the quantitative agreement of the different descriptions of quarkonium quasi-states. *

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“…The geometry that corresponds to a thermal medium with a finite density µ was studied in refs. [11][12][13]. It is a 5-d anti-de Sitter charged black hole space-time with the metric…”

Section: Holographic Model For Heavy Vector Mesonsmentioning

confidence: 99%

Quasinormal modes for heavy vector mesons in a finite density plasma

Braga

Mata

2020

Physics Letters B

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“…For spectral functions of other holographic models, see for example, refs. [23][24][25][26][27][28].…”

Section: Jhep03(2014)058mentioning

confidence: 99%

Vector meson quasinormal modes in a finite-temperature AdS/QCD model

Mamani

Miranda

Boschi-Filho

et al. 2014

J. High Energ. Phys.

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Abstract:We study the spectrum of vector mesons in a finite temperature plasma. The plasma is holographically described by a black hole AdS/QCD model. We compute the boundary retarded Green's functions using AdS/CFT prescriptions. The corresponding thermal spectral functions show quasiparticle peaks at low temperatures. Then we calculate the quasinormal modes of vector mesons in the soft-wall black hole geometry and analyse their temperature and momentum dependences.

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“…In this case, mode functions, f , represent proton and neutron respectively. Due to the different isospin charge of nucleons, the equation in (26) can be further splitted into two cases. Proton with the isospin charge 1/2 is governed by…”

Section: Nucleons In a Nuclear Mediummentioning

confidence: 99%

“…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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In-medium hadronic spectral functions through the soft-wall holographic model of QCD

Cited by 54 publications

References 72 publications

Quasinormal modes for heavy vector mesons in a finite density plasma

Quasinormal modes for heavy vector mesons in a finite density plasma

Vector meson quasinormal modes in a finite-temperature AdS/QCD model

Holographic nucleons in the nuclear medium

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