Year: 2003
Type: article
Abstract: The Bethe-Salpeter equation in noncommutative QED is considered for a three body bound state. We study the nonrelativistic limit of this equation in the instantaneous approximation and derive the corresponding Schr\"odinger equation in noncommutative space. It is shown that the experimental data for a helium atom put an upper bound on the magnitude of the parameter of noncommutativity, $\ensuremath{\theta}\ensuremath{\sim}{10}^{\ensuremath{-}9}{\ensuremath{\lambda}}_{e}^{2}.$
Authors: M. Haghighat, F. Loran
Language: English
Subfield: Statistical and Nonlinear Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W1974069351
