Abstract
We study the response functions (chromo-electric susceptibilities) for an interacting quark-gluon plasma. The interaction effects have been encoded in the effective fugacities for quasi-partons which are extracted self-consistently from the two equations of state for hot QCD. The first one is the fully perturbative O(g 5) EOS and the second one, which is O(g 6ln(1/g)) , incorporates some non-perturbative effects. We find that the response function shows large deviations from the ideal behavior. We further determine the temperature dependence of the Debye mass by fixing the effective coupling constant Q2 which appears in the transport equation. We show that our formalism naturally yields the leading-order HTL expression for the Debye mass if we employ the ideal EOS. Employing the Debye mass, we estimate the dissociation temperatures for various charmonium and bottomonium bound states. These results are consistent with the current theoretical studies.
| Original language | English |
|---|---|
| Pages (from-to) | 109-117 |
| Number of pages | 9 |
| Journal | European Physical Journal A |
| Volume | 40 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 01-04-2009 |
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All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
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On the chromo-electric permittivity and Debye screening in hot QCD. / Chandra, V.; Ranjan, A.; Ravishankar, V.
In: European Physical Journal A, Vol. 40, No. 1, 01.04.2009, p. 109-117.Research output: Contribution to journal › Article
TY - JOUR
T1 - On the chromo-electric permittivity and Debye screening in hot QCD
AU - Chandra, V.
AU - Ranjan, A.
AU - Ravishankar, V.
PY - 2009/4/1
Y1 - 2009/4/1
N2 - We study the response functions (chromo-electric susceptibilities) for an interacting quark-gluon plasma. The interaction effects have been encoded in the effective fugacities for quasi-partons which are extracted self-consistently from the two equations of state for hot QCD. The first one is the fully perturbative O(g 5) EOS and the second one, which is O(g 6ln(1/g)) , incorporates some non-perturbative effects. We find that the response function shows large deviations from the ideal behavior. We further determine the temperature dependence of the Debye mass by fixing the effective coupling constant Q2 which appears in the transport equation. We show that our formalism naturally yields the leading-order HTL expression for the Debye mass if we employ the ideal EOS. Employing the Debye mass, we estimate the dissociation temperatures for various charmonium and bottomonium bound states. These results are consistent with the current theoretical studies.
AB - We study the response functions (chromo-electric susceptibilities) for an interacting quark-gluon plasma. The interaction effects have been encoded in the effective fugacities for quasi-partons which are extracted self-consistently from the two equations of state for hot QCD. The first one is the fully perturbative O(g 5) EOS and the second one, which is O(g 6ln(1/g)) , incorporates some non-perturbative effects. We find that the response function shows large deviations from the ideal behavior. We further determine the temperature dependence of the Debye mass by fixing the effective coupling constant Q2 which appears in the transport equation. We show that our formalism naturally yields the leading-order HTL expression for the Debye mass if we employ the ideal EOS. Employing the Debye mass, we estimate the dissociation temperatures for various charmonium and bottomonium bound states. These results are consistent with the current theoretical studies.
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U2 - 10.1140/epja/i2009-10734-5
DO - 10.1140/epja/i2009-10734-5
M3 - Article
AN - SCOPUS:67649366118
VL - 40
SP - 109
EP - 117
JO - Zeitschrift für Physik
JF - Zeitschrift für Physik
SN - 0044-3328
IS - 1
ER -