dorsal/arxiv
View Schema1/N_c- expansion of the quark condensate at finite temperature
| Authors | D. Blaschke, Yu. L. Kalinovsky, G. Roepke, S. Schmidt, M. K. Volkov |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9511003 |
| URL | https://arxiv.org/abs/nucl-th/9511003 |
| DOI | 10.1103/PhysRevC.53.2394 |
| Journal | Phys.Rev.C53:2394-2400,1996 |
Abstract
Previously the quark and meson properties in a many quark system at finite temperature have been studied within effective QCD approaches in the Hartree approximation. In the present paper we consider the influence of the mesonic correlations on the quark self-energy and on the quark propagator within a systematic $1/N_c$- expansion. Using a general separable ansatz for the nonlocal interaction, we derive a selfconsistent equation for the $1/N_c$ correction to the quark propagator. For a separable model with cut-off formfactor, we obtain a decrease of the condensate of the order of 20\% at zero temperature. A lowering the critical temperature for the onset of the chiral restoration transition due to the inclusion of mesonic correlations is obtained what seems to be closer to the results from lattice calculations.
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"abstract": "Previously the quark and meson properties in a many quark system at finite\ntemperature have been studied within effective QCD approaches in the Hartree\napproximation. In the present paper we consider the influence of the mesonic\ncorrelations on the quark self-energy and on the quark propagator within a\nsystematic $1/N_c$- expansion. Using a general separable ansatz for the\nnonlocal interaction, we derive a selfconsistent equation for the $1/N_c$\ncorrection to the quark propagator. For a separable model with cut-off\nformfactor, we obtain a decrease of the condensate of the order of 20\\% at zero\ntemperature. A lowering the critical temperature for the onset of the chiral\nrestoration transition due to the inclusion of mesonic correlations is obtained\nwhat seems to be closer to the results from lattice calculations.",
"arxiv_id": "nucl-th/9511003",
"authors": [
"D. Blaschke",
"Yu. L. Kalinovsky",
"G. Roepke",
"S. Schmidt",
"M. K. Volkov"
],
"categories": [
"nucl-th"
],
"doi": "10.1103/PhysRevC.53.2394",
"journal_ref": "Phys.Rev.C53:2394-2400,1996",
"title": "1/N_c- expansion of the quark condensate at finite temperature",
"url": "https://arxiv.org/abs/nucl-th/9511003"
},
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