Green's temperature functions of massive scalar particles for finite matter density
Abstract
An explicit expression is obtained for the Green's functions of a massive scalar field for nonnull temperatures and density in the form of a series in powers of m/T. The equivalence of the spectralgeometric approach and the temperature technique of Matsubara and Bernard is demonstrated. Corrections to the StefanBoltzmann law are obtained on the basis of the calculated Green's functions. The energy density is calculated in regions of high and low temperatures. The formulas obtained can prove to be useful in the discussion of the phase transition hadronsquarkgluon plasma.
 Publication:

Soviet Physics Journal
 Pub Date:
 July 1991
 DOI:
 10.1007/BF00897986
 Bibcode:
 1991SvPhJ..34..589V