Role of retardation in three-dimensional relativistic equations

Autor:	A. D. Lahiff, I. R. Afnan
Rok vydání:	1997
Předmět:	Physics Coupling constant Nuclear and High Energy Physics Antiparticle Quantum nonlocality Bethe–Salpeter equation Sigma Coupling (probability) Integral equation Energy (signal processing) Mathematical physics
Zdroj:	Physical Review C. 56:2387-2395
ISSN:	1089-490X 0556-2813
Popis:	Equal-time Green{close_quote}s function is used to derive a three-dimensional integral equation from the Bethe-Salpeter equation. The resultant equation, in the absence of antiparticles, is identical to the use of time-ordered diagrams, and has been used within the framework of {phi}{sup 2}{sigma} coupling to study the role of energy dependence and nonlocality when the two-body potential is the sum of {sigma} exchange and crossed {sigma} exchange. The results show that nonlocality and energy dependence make a substantial contribution to both the on-shell and off-shell amplitudes. {copyright} {ital 1997} {ital The American Physical Society}
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a443d34ad08679a9b9667578c2258a2f https://doi.org/10.1103/physrevc.56.2387 Zobrazit plný text záznamu