Classicality via hydrodynamics in quantum field theory

Details Classicality via hydrodynamics in quantum field theory Classicality via hydrodynamics in quantum field theory

1998-05-19

arxiv.org/abs/gr-qc/9805074v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

17 pages, LATEX

Scientific paper

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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