Pion-pair formation and the pion dispersion relation in a hot pion gas

Details Pion-pair formation and the pion dispersion relation in a hot pion gas Pion-pair formation and the pion dispersion relation in a hot pion gas

1996-09-13

arxiv.org/abs/nucl-th/9609036v1

Nucl.Phys. A612 (1997) 472-492

Physics

Nuclear Physics

Nuclear Theory

16 pages revtex, 7 Postscript figures

Scientific paper

10.1016/S0375-9474(96)00409-5

The possibility of pion--pair formation in a hot pion gas, based on the bosonic gap equation, is pointed out and discussed in detail. The critical temperature for condensation of pion pairs (Evans--Rashid transition) is determined as a function of the pion density. As for fermions, this phase transition is signaled by the appearance of a pole in the two--particle propagator. In bose systems there exists a second, lower critical temperature, associated with the appearance of the single--particle condensate. Between the two critical temperatures the pion dispersion relation changes from the usual quasiparticle dispersion to a Bogoliubov--like dispersion relation at low momenta. This generalizes the non-relativistic result for an attractive bose gas by Evans et al. Possible consequences for the inclusive pion spectra measured in heavy--ion collisions at ultra--relativistic energies are discussed.

Affiliated with

Also associated with

No associations

Rating

Pion-pair formation and the pion dispersion relation in a hot pion gas does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Pion-pair formation and the pion dispersion relation in a hot pion gas, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pion-pair formation and the pion dispersion relation in a hot pion gas will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-492130