Classicality via hydrodynamics in quantum field theory
C. Anastopoulos
TL;DR
This paper explores how hydrodynamic coarse-graining in quantum field theory can reveal dissipation and noise, using a scalar field model inspired by the consistent histories approach to quantum mechanics.
Contribution
It introduces a simple scalar field model to analyze hydrodynamic coarse-graining and derives the evolution equations highlighting dissipation and noise effects.
Findings
Identification of dissipation in coarse-grained scalar fields
Derivation of evolution equations for coarse-grained quantities
Insights into hydrodynamic behavior in quantum field theory
Abstract
Motivated by the consistent histories approach to quantum mechanics, we examine a simple model of hydrodynamic coarse-graining for a scalar field. It consists in averaging the field over spatial regions of size L and constructing the evolution equation for the coarse grained quantities, thus identifying dissipation and noise.
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Taxonomy
TopicsTheoretical and Computational Physics · Quantum Mechanics and Applications · Stochastic processes and statistical mechanics