A class of stochastic and distributions-free quantum mechanics evolution equations: The Schr\"odinger-like equations

TL;DR

This paper introduces a rigorous method to derive Schr"odinger-like equations from stochastic evolution equations using Dirac notation, extending previous approaches to higher dimensions and other variants.

Contribution

The authors develop a general procedure to construct Schr"odinger-like equations from stochastic evolution equations, including extensions to multi-dimensional lattices and variants.

Findings

Method successfully constructs Schr"odinger-like equations from stochastic models.

Extension to d-dimensional lattices broadens applicability.

Derivation of Schr"odinger equations from Schr"odinger-like equations via limiting procedures.

Abstract

A procedure allowing to construct rigorously discrete as well as continuum deterministic evolution equations from stochastic evolution equations is developed using a Dirac's bra and ket notation. This procedure is an extension of an approach previously used by the authors coined Discrete Stochastic Evolution Equations. Definitions and examples of discretes as well as continuum one-dimensional lattices are developed in detail in order to show the basic tools that allows to construct Schr\"odinger-like equations. Extension to d-dimensional lattices are studied in order to provide a wider exposition and the one-dimensional cases are derived as special cases, as expected. Some variants of the procedure allows to construct other evolution equations. Also, using a limiting procedure, it is possible to derive the Schr\"odinger equations from the Schr\"odinger like equations.