Analysis of $\omega$ self-energy at finite temperature and density in the real-time formalism

Abstract

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.

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Cited by in corpus (6)

• Shear viscosity due to the Landau damping from quark-pion interaction
• Shear viscosity of pion gas due to $\rho \pi \pi$ and $\sigma \pi \pi$ interactions
• The nucleon thermal width due to pion-baryon loops and its contribution in Shear viscosity
• The width of the omega meson in the nuclear medium
• The $\pi \rho$ Cloud Contribution to the $\omega$ Width in Nuclear Matter
• Low mass enhanced probability of pion in hadronic matter due to its Landau cut contributions