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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

In this paper, I study the conditions imposed on a normal charged fluid sothat the causality and stability criteria hold for this fluid. I adopt thenewly developed General Frame (GF) notion in the relativistic hydrodynamicsframework which states that hydrodynamic frames have to be fixed after applyingthe stability and causality conditions. To my purpose, I take a chargedconformal matter in the flat and $3+1$ dimension to analyze better theseconditions. The causality condition is applied by looking to the asymptoticvelocity of sound hydro modes at the large wave number limit and stabilityconditions are imposed by looking to the imaginary parts of hydro modes as wellas the Routh-Hurwitz criteria. By fixing some of the transports, the suitablespaces for other ones are derived. I have observed that in a dense medium withfinite $U(1)$ charged chemical potential $\mu_0$, negative values fortransports appear and the second law of thermodynamics has not ruled out theexistence of such values. Sign of scalar transports are not limited by anyconstraints and just a combination of vector transports is limited by thesecond law of thermodynamic. Also numerically it is proved that the mostfavorable region for transports $\tilde{\gamma}_{1, 2}$, coefficients of thedissipative terms of the current, is of negative values.

Causality and Stability Conditions of a Conformal Charged Fluid