dorsal/arxiv
View SchemaDynamical Evolution of the Scalar Condensate in Heavy Ion Collisions
| Authors | Laszlo P. Csernai, Paul J. Ellis, Sangyong Jeon, Joseph I. Kapusta |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9908020 |
| URL | https://arxiv.org/abs/nucl-th/9908020 |
| DOI | 10.1103/PhysRevC.61.054901 |
| Journal | Phys.Rev. C61 (2000) 054901 |
Abstract
We derive the effective coarse-grained field equation for the scalar condensate of the linear sigma model in a simple and straightforward manner using linear response theory. The dissipative coefficient is calculated at tree level on the basis of the physical processes of sigma-meson decay and of thermal sigma-mesons and pions knocking sigma-mesons out of the condensate. The field equation is solved for hot matter undergoing either one or three dimensional expansion and cooling in the aftermath of a high energy nuclear collision. The results show that the time constant for returning the scalar condensate to thermal equilibrium is of order 2 fm/c.
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"abstract": "We derive the effective coarse-grained field equation for the scalar\ncondensate of the linear sigma model in a simple and straightforward manner\nusing linear response theory. The dissipative coefficient is calculated at tree\nlevel on the basis of the physical processes of sigma-meson decay and of\nthermal sigma-mesons and pions knocking sigma-mesons out of the condensate. The\nfield equation is solved for hot matter undergoing either one or three\ndimensional expansion and cooling in the aftermath of a high energy nuclear\ncollision. The results show that the time constant for returning the scalar\ncondensate to thermal equilibrium is of order 2 fm/c.",
"arxiv_id": "nucl-th/9908020",
"authors": [
"Laszlo P. Csernai",
"Paul J. Ellis",
"Sangyong Jeon",
"Joseph I. Kapusta"
],
"categories": [
"nucl-th",
"hep-ph"
],
"doi": "10.1103/PhysRevC.61.054901",
"journal_ref": "Phys.Rev. C61 (2000) 054901",
"title": "Dynamical Evolution of the Scalar Condensate in Heavy Ion Collisions",
"url": "https://arxiv.org/abs/nucl-th/9908020"
},
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