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Quantum Simulation

Modification of Crum's Theorem for `Discrete' Quantum Mechanics

arXiv
Authors: Leonor Garcia-Gutierrez, Satoru Odake, Ryu Sasaki

Year

2010

Paper ID

9077

Status

Preprint

Abstract Read

~2 min

Abstract Words

92

Citations

N/A

Abstract

Crum's theorem in one-dimensional quantum mechanics asserts the existence of an associated Hamiltonian system for any given Hamiltonian with the complete set of eigenvalues and eigenfunctions. The associated system is iso-spectral to the original one except for the lowest energy state, which is deleted. A modification due to Krein-Adler provides algebraic construction of a new complete Hamiltonian system by deleting a finite number of energy levels. Here we present a discrete version of the modification based on the Crum's theorem for the `discrete' quantum mechanics developed by two of the present authors.

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  • Crum's theorem in one-dimensional quantum mechanics asserts the existence of an associated Hamiltonian system for any given Hamiltonian with the complete set of eigenvalues and...

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