1992/06/30 by Mark Srednicki · 3 citations
Physics and Astronomy · Psychology · #Philosophy and Theoretical Science #Quantum Mechanics and Applications #Relativity and Gravitational Theory #gr-qc #hep-th
paper · pdf · doi:10.1016/0550-3213(93)90576-b
published as Nucl.Phys. B410 (1993) 143-154 · 12 pages, in Plain Tex; section 3 on Lorentz covariance expanded and improved in response to year-long correspondence with the referee, but the conclusions are unchanged; UCSBTH-92-22
arxiv created 1993/07/08 · openalex publication_date 1993/12/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
Phenomenological and formal restrictions on the evolution of pure into mixed states are discussed. In particular, it is argued that, if energy is conserved, loss of purity is incompatible with the weakest possible form of Lorentz covariance.