On the strong coupling expansion for a generating functional

Autor:	V E Rochev
Rok vydání:	1993
Předmět:	Legendre transformation symbols.namesake Mathematical analysis symbols Strong coupling General Physics and Astronomy Propagator Statistical and Nonlinear Physics Lower order Boundary value problem Function (mathematics) Mathematical Physics Mathematics
Zdroj:	Journal of Physics A: Mathematical and General. 26:1235-1247
ISSN:	1361-6447 0305-4470
DOI:	10.1088/0305-4470/26/5/039
Popis:	The strong coupling expansion (SCE) for the generating functional of the Green functions in the ( phi * phi )d2 model is investigated by the method of Schwinger equations. No lattices are used. The problem of boundary conditions is discussed. The exact (in all orders of SCE) relation between the two-particle function and the propagator has been obtained. From this relation the equation for the propagator is obtained. In the lower order this equation coincides with the known gap equation. A modification of the second Legendre transformation in the SCE region is presented.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::58233b66fa1f400b1d87bc5b68d6cac1 https://doi.org/10.1088/0305-4470/26/5/039 Zobrazit plný text záznamu