Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2000-09-14
Phys.Rev. D63 (2001) 116003
Physics
High Energy Physics
High Energy Physics - Phenomenology
11 pages, latex, 10 figures, revised version added: 2 figures, references and an extended discussion. Accepted for publication
Scientific paper
10.1103/PhysRevD.63.116003
We discuss homogeneous nucleation in a first-order chiral phase transition within an effective field theory approach to low-energy QCD. Exact decay rates and bubble profiles are obtained numerically and compared to analytic results obtained with the thin-wall approximation. The thin-wall approximation overestimates the nucleation rate for any degree of supercooling. The time scale for critical thermal fluctuations is calculated and compared to typical expansion times for high-energy hadronic or heavy-ion collisions. We find that significant supercooling is possible, and the relevant mechanism for phase conversion might be that of spinodal decomposition. Some potential experimental signatures of supercooling, such as an increase in the correlation length of the scalar condensate, are also discussed.
Dumitru Adrian
Fraga Eduardo S.
Jackson Andrew D.
Lenaghan Jonathan T.
Scavenius Ove
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