Journal
EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS
Volume 230, Issue 3, Pages 607-634Publisher
SPRINGER HEIDELBERG
DOI: 10.1140/epjs/s11734-021-00022-2
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- Polish National Science Center [2018/30/E/ST2/00432]
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The article discusses the thermoelectric effects in hot and dense strongly interacting matter, estimating the Seebeck coefficients using the relativistic Boltzmann equation. Quark matter is modeled by the two flavor Nambu-Jona-Lassinio (NJL) model, while hadronic matter is modeled by the hadron resonance gas (HRG) model, with an estimation of transport coefficients and relaxation times. Additionally, the formalism of the thermoelectric effect in the presence of an external magnetic field is discussed, providing estimations for the magneto-Seebeck coefficient and the Nernst coefficient for hot and dense QCD matter.
The presence of a nonvanishing thermal gradient and/or a chemical potential gradient in a conducting medium can lead to an electric field-an effect known as thermoelectric effect or Seebeck effect. We discuss here the thermoelectric effects for hot and dense strongly interacting matter within the framework of relativistic Boltzmann equation in the relaxation time approximation. In the context of heavy-ion collisions, the Seebeck coefficients for the quark matter as well as for the hadronic matter are estimated within this approach. The quark matter is modeled by the two flavor Nambu-Jona-Lassinio (NJL) model and the hadronic medium is modeled by the hadron resonance gas (HRG) model with hadrons and their resonances up to a mass cutoff (A) over tilde similar to 2.6 GeV. For the estimation of thermoelectric transport coefficients, for the quark matter, we calculate the relaxation times for the quarks and antiquarks from the quark-quark and quark-antiquark scattering through meson exchange within the NJL model. On the other hand, for the hadronic medium, the relaxation times of hadrons and their resonances are estimated within a hard sphere scattering approximation. We also discuss the formalism of the thermoelectric effect in the presence of a nonvanishing external magnetic field. We give an estimation of the associated magneto-Seebeck coefficient and the Nernst coefficient for the hot and dense QCD matter.
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