Generating M-Indeterminate Probability Densities by Way of Quantum Mechanics

Autor: Leon Cohen, Rafael Sala Mayato, Patrick J. Loughlin
Rok vydání: 2021
Předmět:
Zdroj: Journal of Theoretical Probability. 35:1537-1555
ISSN: 1572-9230
0894-9840
DOI: 10.1007/s10959-021-01121-5
Popis: Probability densities that are not uniquely determined by their moments are said to be "moment-indeterminate", or "M-indeterminate". Determining whether or not a density is M-indeterminate, or how to generate an M-indeterminate density, is a challenging problem with a long history. Quantum mechanics is inherently probabilistic, yet the way in which probability densities are obtained is dramatically different in comparison to standard probability theory, involving complex wave functions and operators, among other aspects. Nevertheless, the end results are standard probabilistic quantities, such as expectation values, moments and probability density functions. We show that the quantum mechanics procedure to obtain densities leads to a simple method to generate an infinite number of M-indeterminate densities. Different self-adjoint operators can lead to new classes of M-indeterminate densities. Depending on the operator, the method can produce densities that are of the Stieltjes class or new formulations that are not of the Stieltjes class. As such, the method complements and extends existing approaches and opens up new avenues for further development. The method applies to continuous and discrete probability densities. A number of examples are given.
Comment: 16 pages
Databáze: OpenAIRE
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