Schrödinger–Newton Equation with Spontaneous Wave Function Collapse

Autor: Lajos Diósi
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Quantum Reports, Vol 4, Iss 4, Pp 566-573 (2022)
Druh dokumentu: article
ISSN: 2624-960X
DOI: 10.3390/quantum4040041
Popis: Based on the assumption that the standard Schrödinger equation becomes gravitationally modified for massive macroscopic objects, two independent proposals have survived from the 1980s. The Schrödinger–Newton equation (1984) provides well-localized solitons for free macro-objects but lacks the mechanism of how extended wave functions collapse on solitons. The gravity-related stochastic Schrödinger equation (1989) provides the spontaneous collapse, but the resulting solitons undergo a tiny diffusion, leading to an inconvenient steady increase in the kinetic energy. We propose the stochastic Schrödinger–Newton equation, which contains the above two gravity-related modifications together. Then, the wave functions of free macroscopic bodies will gradually and stochastically collapse to solitons, which perform inertial motion without momentum diffusion: conservation of momentum and energy is restored.
Databáze: Directory of Open Access Journals