The approach to equilibrium in interacting classical and quantum systems is a challenging
problem of both theoretical and experimental interest. One useful organizing principle …

Causality is necessary for retarded Green's functions to remain retarded in all inertial frames
in relativity, which ensures that dissipation of fluctuations is a Lorentz invariant concept. For …

We develop a general formalism for introducing stochastic fluctuations around
thermodynamic equilibrium which takes into account, for the first time, recent developments …

A bstract We construct stable and causal effective field theories (EFTs) for describing
statistical fluctuations in relativistic diffusion and relativistic hydrodynamics. These EFTs are …

First-order relativistic conformal hydrodynamics in a general (hydrodynamic) frame is
characterized by a shear viscosity coefficient and two UV-regulator parameters. Within a …

A bstract We study a nearly critical superfluid system from two complementary approaches.
Within the first approach, we formulate a Schwinger-Keldysh effective field theory (EFT) for …

The local equilibration time of quantum many-body systems has been conjectured to satisfy
a Planckian bound, so that it always exceeds some value on the order of ℏ/T, where T is the …

Within the last century, Condensed Matter Theory (CMT) has emerged as one of the most
successful areas of physics. The initial impetus behind it was the statistical mechanics …

First-order relativistic conformal hydrodynamics in a general frame is characterized by three
transport coefficients. Within a certain range of these coefficients, the equilibrium is stable …