Charmonium ground and excited states at finite temperature from complex Borel sum rules

Araki, Ken-Ji; Suzuki, Kei; Gubler, Philipp; Oka, M.

doi:10.1016/j.physletb.2018.01.072

“…A unique ability of potential models is that it can be extended to non-equilibrium situations. It would be interesting to combine the method of potentials with the technique of the QCD sum rule [80][81][82][83][84] to gain insight into the properties of out-of-equilibrium QCD.…”

Section: Summary and Discussionmentioning

confidence: 99%

Heavy quarkonia in a bulk viscous medium

Thakur,

Haque,

Hirono

2020

Preprint

3

2

0

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We study the properties of heavy quarkonia in a quark gluon plasma in the presence of bulk viscous effects. Within the hard thermal loop approximation at one-loop, the dielectric permittivity of a quark gluon plasma is computed, where the bulk viscous effect enters through the deformation of the distribution functions of thermal quarks and gluons. Based on the modified dielectric permittivity, we compute the in-medium heavy quark potential, that includes non-pertubative string-like terms as well as the perturbative Coulombic term. We discuss how the bulk viscous effect modify the real and imaginary parts of the in-medium potential. Several prescriptions are examined as to how to include the string-like non-perturbative potentials. Using the deformed potential, we compute the wave functions, binding energies, and decay widths of heavy quarkonia in a bulk viscous medium, and study their sensitivity to the strength of the bulk viscous effect. An estimate of the melting temperatures is given.

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“…For more recent work with an improved kernel and hence an MEM analysis with better resolution, consult Ref. [237]. 5 Hadrons at finite density…”

Section: The Maximum Entropy Methodsmentioning

confidence: 99%

Recent progress in QCD condensate evaluations and sum rules

Gubler

¹

,

Satow

²

2019

Progress in Particle and Nuclear Physics

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We review the recent status of the QCD sum rule approach to study the properties of hadrons in vacuum and in hot or dense matter. Special focus is laid on the progress made in the evaluation of the QCD condensates, which are the input of all QCD sum rule calculations, and for which much new information has become available through high precision lattice QCD calculations, chiral perturbation theory and experimental measurements. Furthermore, we critically examine common analysis methods for QCD sum rules and contrast them with potential alternative strategies. The status of QCD sum rule studies investigating the modification of hadrons at finite density as well as recent derivations of exact sum rules applicable to finite temperature spectral functions, are also reviewed.

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“…A unique ability of potential models is that it can be extended to non-equilibrium situations. It would be interesting to combine the method of potentials with the technique of the QCD sum rule [85][86][87][88][89] to gain insight into the properties of out-of-equilibrium QCD.…”

Section: Jhep06(2020)071mentioning

confidence: 99%

Heavy quarkonia in a bulk viscous medium

Thakur

¹

,

Haque

²

,

Hirono

³

2020

J. High Energ. Phys.

View full text Add to dashboard Cite

We study the properties of heavy quarkonia in a quark gluon plasma in the presence of bulk viscous effects. Within the hard thermal loop approximation at one-loop, the dielectric permittivity of a quark gluon plasma is computed, where the bulk viscous effect enters through the deformation of the distribution functions of thermal quarks and gluons. Based on the modified dielectric permittivity, we compute the in-medium heavy quark potential, that includes non-pertubative string-like terms as well as the perturbative Coulombic term. We discuss how the bulk viscous effect modify the real and imaginary parts of the in-medium potential. Several prescriptions are examined as to how to include the string-like non-perturbative potentials. Using the deformed potential, we compute the wave functions, binding energies, and decay widths of heavy quarkonia in a bulk viscous medium, and study their sensitivity to the strength of the bulk viscous effect. An estimate of the melting temperatures is given.

show abstract

Charmonium ground and excited states at finite temperature from complex Borel sum rules

Cited by 6 publications

References 61 publications

Heavy quarkonia in a bulk viscous medium

Heavy quarkonia in a bulk viscous medium

Recent progress in QCD condensate evaluations and sum rules

Heavy quarkonia in a bulk viscous medium

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