https://doi.org/10.1140/epjc/s10052-009-1131-y
Regular Article - Theoretical Physics
The path-integral approach to the N=2 linear sigma model
1
Institute of Nuclear Physics, NCSR “Demokritos”, Athens, Greece
2
IMAPP, FNWI, Radboud Universiteit Nijmegen, Nijmegen, The Netherlands
* e-mail: M.vanKessel@science.ru.nl
Received:
27
January
2009
Revised:
21
May
2009
Published online:
22
September
2009
In QFT the effective potential is an important tool to study symmetry breaking phenomena. It is known that, in some theories, the canonical approach and the path-integral approach yield different effective potentials. In this paper we investigate this for the Euclidean N=2 linear sigma model. Both the Green’s functions and the effective potential will be computed in three different ways. The relative merits of the various approaches are discussed.
© Springer-Verlag , 2009
