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Journal articles
Validity of various approximations for the Bethe-Salpeter equation and their WKB quantization
Abstract : The validity of the instantaneous approximation for the Bethe-Salpeter equation is questioned within the framework of the simple scalar-scalar model of Cutkosky. Detailed numerous results for various approximations are compared to the exact ones. WKB quantization is applied to these relativistic approximations. An unexpected question arises: is the currently used Bethe-Salpeter equation (i.e., the ladder approximation) well suited to describe two interacting relativistic particles?
http://hal.in2p3.fr/in2p3-00007098
Contributor : Lpsc Bibliotheque <>
Submitted on : Thursday, November 30, 2000 - 4:32:23 PM
Last modification on : Thursday, November 19, 2020 - 12:58:27 PM
Contributor : Lpsc Bibliotheque <>
Submitted on : Thursday, November 30, 2000 - 4:32:23 PM
Last modification on : Thursday, November 19, 2020 - 12:58:27 PM