Wednesday, July 11, 2012

1207.2251 (Sabyasachi Ghosh et al.)

Analysis of $ω$ self-energy at finite temperature and density in
the real-time formalism
   [PDF]

Sabyasachi Ghosh, Sourav Sarkar
Using the real time formalism of field theory at finite temperature and density we have evaluated the in-medium $\omega$ self-energy from baryon and meson loops. We have analyzed in detail the discontinuities across the branch cuts of the self-energy function and obtained the imaginary part from the non-vanishing contributions in the cut regions. An extensive set of resonances have been considered in the baryon loops. Adding the meson loop contribution we obtain the full modified spectral function of $\omega$ in a thermal gas of mesons, baryons and anti-baryons in equilibrium for several values of temperature and baryon chemical potential.
View original: http://arxiv.org/abs/1207.2251

No comments:

Post a Comment