SURFACE FREE ENERGY OF HADRONIC AND GLUONIC DROPLETS FROM LATTICE QCD

S. Huang, J. Potvin and C. Rebbi
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S. Huang: Department of Physics, FM-15, Washington University, Seattle, WA 98195, U.S.A
J. Potvin: Department of Science and Mathematics, Parks College of Saint Louis University, Cahokia, IL 62206, U.S.A
C. Rebbi: Department of Physics, Boston University, Boston, MA 02215, U.S.A

International Journal of Modern Physics C (IJMPC), 1992, vol. 03, issue 05, 931-938

Abstract: We present the results of a computation of the surface tension on hadronic and gluonic droplets in finite temperature quenched lattice QCD. The surface free energy was obtained by integrating the average action along a path in coupling space corresponding to growing and melting a spherical droplet of a given radius. So far droplets of radius 4, 5 and 8 (in lattice units) have been considered. After discussing ambiguities in the definition of the surface tension due to a droplet’s finite size and thick interface, we compare our results with the Bag model study of Mardor and Svetitsky. Our calculations appear to confirm qualitatively their prediction of a negative surface tension for hadronic droplets with small radii. A similar result is found for gluonic droplets, in contrast however with the Bag model. We also compare our results with the recent lattice simulation of Kajantie, Karkkainen and Rummukainen.

Keywords: Droplet surface tension; quark-gluonic matter; lattice ga uge theory (search for similar items in EconPapers)
Date: 1992
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DOI: 10.1142/S0129183192000592

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