New method for calculating binding energies in quantum mechanics and quantum field theories

G. Gat*, Rosenstein Baruch

*Corresponding author for this work

Research output: Contribution to journalArticle

13 Scopus citations

Abstract

We propose a systematic perturbative method for calculating the binding energy of threshold bound states states which exist for arbitrary small coupling. The starting point is a (regularized) free theory. Explicit calculations are performed for quantum mechanics with arbitrary short-range potential in 1D and various (1+1)-dimensional quantum field theories. We check the method by comparing the results with exact formulas available in solvable models.

Original languageEnglish
Pages (from-to)5-8
Number of pages4
JournalPhysical Review Letters
Volume70
Issue number1
DOIs
StatePublished - 1 Jan 1993

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