The δ-expansion in the large-N limit
| Autor: | Sunil K. Gandhi, Hugh F. Jones, Marcus B. Pinto |
|---|---|
| Rok vydání: | 1991 |
| Předmět: | |
| Zdroj: | Nuclear Physics B. 359:429-440 |
| ISSN: | 0550-3213 |
| DOI: | 10.1016/0550-3213(91)90067-8 |
| Popis: | Using the linear δ-expansion we study the effective potentials of the O(N)-invariant Gross-Neveu model and (φaφa)2 theory in the large-N limit. We show that the linear δ-expansion augmented with the optimization scheme ∂V ∂μ = 0 , where μ is an arbitrary parameter, reproduces the large-N effective potential exactly. We also show that the higher-order corrections in powers of δ which would be expected to spoil this result are zero. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|