Transport coefficients of hadronic matter in a van der Walls hadron resonance gas model

• DOI: 10.48550/arxiv.1901.07238
• Publication Date: 2019-01-01
• Authors: Ranjita K. Mohapatra; Hiranmaya Mishra; Sadhana Dash; Basanta Kumar Nandi
• Keywords: High Energy Physics - Phenomenology; High Energy Physics - Phenomenology (hep-ph); 0103 physical sciences; FOS: Physical sciences; 01 natural sciences

We estimate the transport coefficients like shear and bulk viscosities of hot hadronic matter in van der Walls hadron resonance gas ( VDW HRG ) model relaxation time approximation. also have compared these results with excluded volume EV calculations. $η/s$ decreases as temperature system increases at a fixed baryon chemical potential. is always less than that case due to large entropy density case. At potential, $ζ/s$ estimated along freezeout curve. There an increase determined from universal condition $E/N =ε/n \sim 1$ $GeV$. calculated variation attraction parameter curve $GeV$ keeping parameters same ideal repulsion fixed. observe nontrivial where it meson dominated region This true for $ζ/s$.