Dispersion and suppression of sound near QCD critical point

Abstract

We have used second order relativistic hydrodynamics equipped with equation of state which includes the critical point to study the propagation of perturbation in a relativistic QCD fluid. Dispersion relation for the sound wave has been derived to ascertain the fate of the perturbation in the fluid near the QCD critical end point (CEP). We observe that the threshold value of the wavelength of the sound in the fluid diverges at the CEP, implying that all the modes of the perturbations are dissipated at this point. Some consequences of the suppression of sound near the critical point have been discussed.

arXiv commentTo be published in Physical Review C

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Cited by in corpus (6)

• Suppression of thermal vorticity as an indicator of QCD critical point
• Nonlinear waves in a hot, viscous and nonextensive quark gluon plasma
• Dynamical spectral structure of density fluctuation near QCD critical point
• Role of slow, out-of-equilibrium modes on the dynamic structure factor near the QCD critical point
• Correlation of density fluctuation in a magnetized QCD matter near the critical end point
• The fate of nonlinear perturbations near the QCD critical point