Journal article

Publication year: 1996

Pages: 515-524

Journal: Zeitschrift für Physik C Particles and Fields

Volume number: 71

Issue number: 3

ISSN: 0170-9739

DOI Link: https://doi.org/10.1007/s002880050199

Publisher: Springer Verlag

Abstract: 
We apply a truncated set of dynamical equations of motion for connected equal-time Green functions up to the 4-point level to the investigation of spontaneous ground state symmetry breaking in Phi(2+1)(4) quantum field theory. Within our momentum space discretization we obtain a second order phase transition as soon as the connected 3-point function is included. However, an additional inclusion of the connected 4-point function still shows a significant influence on the shape of the effective potential and the critical coupling.

Harvard Citation style: Peter, A., Hauser, J., Thoma, M. and Cassing, W. (1996) Cluster expansion approach to the effective potential in Phi(4)(2+1)-theory, Zeitschrift für Physik C Particles and Fields, 71(3), pp. 515-524. https://doi.org/10.1007/s002880050199

APA Citation style: Peter, A., Hauser, J., Thoma, M., & Cassing, W. (1996). Cluster expansion approach to the effective potential in Phi(4)(2+1)-theory. Zeitschrift für Physik C Particles and Fields. 71(3), 515-524. https://doi.org/10.1007/s002880050199