Non-equilibrium behavior at a liquid-gas critical point

Non-equilibrium behavior at a liquid-gas critical point

Second-order phase transitions in a non-equilibrium liquid-gas model with reversible mode couplings, i.e., model H for binary-fluid critical dynamics, are studied using dynamic field theory and the renormalization group. The system is driven out of equilibrium either by considering different values for the noise strengths in the Langevin equations describing the evolution of the dynamic variabl...

Critical Behavior of Viscosity at the Liquid–Gas Critical Point of Xe

Comment on "equilibrium polymerization and gas-liquid critical behavior in the Stockmayer fluid".

In a recent paper [Phys. Rev. E 75, 011506 (2007)] Hentschke presented new results on the vapor-liquid transition in the Stockmayer fluid. In this Comment, we analyze the data further and demonstrate that at high dipole strength, the isotropic attractive part of the Stockmayer potential is negligible compared to the thermal energy at the vapor-liquid critical point. The results therefore sugges...

Non-equilibrium conductivity at quantum critical points

Quantum criticality provides an important route to revealing universal non-equilibrium behaviour. A canonical example of a quantum critical point is the Bose-Hubbard model, which we study under the application of an electric field. A Boltzmann transport formalism and ǫ-expansion are used to obtain the non-equilibrium conductivity and current noise. This approach allows us to explicitly identify...

CRITICAL DYNAMICS A field theory approach to equilibrium and non-equilibrium scaling behavior

Part I Near-equilibrium critical dynamics 1 Introduction 3 1 Equilibrium critical phenomena 5 1.1 Mean-field theory 6 1.1.1 Van-der-Waals equation of state 6 1.1.2 Mean-field theory for the ferromagnetic Ising model 9 1.1.3 Ornstein–Zernicke correlation function 14 1.2 Landau–Ginzburg theory 17 1.2.1 Mean-field theory revisited: Landau expansion 17 1.2.