1998/05/19 by Charis Anastopoulos, C. Anastopoulos, Anastopoulos, C.
Mathematics · Physics and Astronomy · #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #High Energy Physics - Theory (hep-th) #Quantum Mechanics and Applications #Stochastic processes and statistical mechanics #Theoretical and Computational Physics #gr-qc #hep-th
paper · pdf · doi:10.48550/arxiv.gr-qc/9805074
17 pages, LATEX
arxiv created 1998/05/19 · openalex publication_date 1998/05/19 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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.