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

Within non-equilibrium Green's function technique on the real-time contourand the two-particle-irreducable (2PI) $\Phi$-functional method, anon-equilibrium potential is introduced. It naturally generalizes theconventional thermodynamic potential with which it coincides in thermalequilibrium. Variations of the non-equilibrium potential over respectiveparameters result in the same quantities as those of the thermodynamicpotential but in arbitrary non-equilibrium. In particular, for slightlynon-equilibrium inhomogeneous configurations a variation of the non-equilibriumpotential over volume is associated with the trace of the non-equilibriumstress tensor. The latter is related to the bulk viscosity. This provides anovel way for evaluation of the bulk viscosity.

Non-Equilibrium 2PI Potential and Its Possible Application to Evaluation of Bulk Viscosity