| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 9851404 | Nuclear Physics A | 2005 | 4 Pages |
Abstract
We consider pairing phenomena in the framework of the exact renormalisation group. We introduce a boson field to describe pairing effects, and take a simple ansatz for the effective action. We derive a set of approximate flow equations for the effective coupling including boson and fermionic fluctuations. The initial conditions are obtained by renor- malising the interaction to fit the scattering length in vacuum. At some critical value of the running scale, the numerical solutions show a phase transition to a gapped phase. Standard results are recovered if we omit the boson loops.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
B. Krippa, M.C. Birse, N.R. Walet, J.A. McGovern,