Alford, M., Berges, J. and Cheyne, J.M. (2004) Critical phenomena from the two-particle irreducible 1/N expansion. Physical Review D, 70, (doi: 10.1103/PhysRevD.70.125002)
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Abstract
The 1/N expansion of the two-particle irreducible (2PI) effective action is employed to compute universal properties at the 2nd order phase transition of an O(N)-symmetric N-vector model directly in three-dimensions. At next-to-leading-order the approach cures the spurious small-N divergence of the standard (1PI) 1/N expansion for a computation of the critical anomalous dimension η(N), and leads to improved estimates already for moderate values of N.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | UNSPECIFIED |
| Authors: | Alford, M., Berges, J., and Cheyne, J.M. |
| College/School: | College of Science and Engineering > School of Physics and Astronomy |
| Journal Name: | Physical Review D |
| Publisher: | American Physical Society |
| ISSN: | 1550-7998 |
| ISSN (Online): | 1089-4918 |
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