Finite-temperature corrections in the dilated chiral quark model
- Hanyang Univ., Seoul (Korea, Republic of). Dept. of Physics
- CEA Centre d`Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France). Service de Physique Theorique
We calculate the finite-temperature corrections in the dilated chiral quark model using the effective potential formalism. Assuming that the dilaton limit is applicable at some short length scale, we interpret the results to represent the behavior of hadrons in dense and hot matter. We obtain the scaling law, f{sub {pi}}(T)/f{sub {pi}} = m{sub Q}(T)/m{sub Q} {approx_equal} m{sub {sigma}}(T)/m{sub {sigma}}while we argue, using PCAC, that pion mass does not scale within the temperature range involved in our Lagrangian. It is found that the hadron masses and the pion decay constant drop faster with temperature in the dilated chiral quark model than in the conventional linear sigma model that does not take into account the QCD scale anomaly. We attribute the difference in scaling in heat bath to the effect of baryonic medium on thermal properties of the hadrons. Our finding would imply that the AGS experiments (dense and hot matter) and the RHIC experiments (hot and dilute matter) will ``see`` different hadron properties in the hadronization exit phase.
- Research Organization:
- Washington Univ., Seattle, WA (United States). Inst. for Nuclear Theory
- Sponsoring Organization:
- USDOE, Washington, DC (United States); Korea Science and Engineering Foundation (Korea, Republic of); Korea Ministry of Education (Korea)
- DOE Contract Number:
- FG06-90ER40561
- OSTI ID:
- 85044
- Report Number(s):
- DOE/ER/40561-193; ON: DE95012174; IN: INT95-16-02; CNN: G 94-1400-04-01-3; G bsri-94-2441; TRN: 95:017143
- Resource Relation:
- Other Information: PBD: Mar 1995
- Country of Publication:
- United States
- Language:
- English
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