Dynamical spectral structure of density fluctuation near the QCD critical point

The expression for the dynamical spectral structure of density fluctuation near QCD critical point has been derived using linear response theory within purview Israel–Stewart relativistic viscous hydrodynamics. change in system as it approaches studied. effects have introduced through a realistic equation state and scaling behaviour various transport coefficients thermodynamic functions. We found that Rayleigh Brillouin peaks are distinctly visible when is away from but tend to merge point. sensitivity function on wave vector (k) sound demonstrated. It shown get merged with peak because absorption waves vicinity