English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The purpose of this paper is twofold. Firstly, we study the dynamical densityfluctuations around the critical point(CP) of Quantum Chromodynamics(QCD) usingdissipative relativistic fluid dynamics in which the coupling of the densityfluctuations to those of other conserved quantities is taken into account. Weshow that the sound mode which is directly coupled to the mechanical densityfluctuation is attenuated and in turn the thermal mode becomes the genuine softmode at the QCD CP. We give a speculation on the possible fate of a Mach conein the vicinity of the QCD CP as a signal of the existence of the CP on thebasis of the above findings. Secondly, we clarify that the so calledfirst-order relativistic fluid dynamic equations have generically no problem todescribe fluid dynamic phenomena with long wave lengths contrary to a naivesuspect whereas even Israel-Stewart equation, a popular second-order equation,may not describe the hydrodynamic mode in general depending on the value of therelaxation time.

progress of theoretical physics

Dynamical Density Fluctuations around QCD Critical Point Based on  Dissipative Relativistic Fluid Dynamics-possible fate of Mach cone at the  critical point-