Renormalization of the BCS-BEC crossover by order parameter fluctuations

Details Renormalization of the BCS-BEC crossover by order parameter fluctuations Renormalization of the BCS-BEC crossover by order parameter fluctuations

2009-07-15

arxiv.org/abs/0907.2687v1

Phys. Rev. B 80, 104514 (2009).

Physics

Condensed Matter

Quantum Gases

5 pages, 3 figures

Scientific paper

10.1103/PhysRevB.80.104514

We use the functional renormalization group approach with partial bosonization in the particle-particle channel to study the effect of order parameter fluctuations on the BCS-BEC crossover of superfluid fermions in three dimensions. Our approach is based on a new truncation of the vertex expansion where the renormalization group flow of bosonic two-point functions is closed by means of Dyson-Schwinger equations and the superfluid order parameter is related to the single particle gap via a Ward identity. We explicitly calculate the chemical potential, the single-particle gap, and the superfluid order parameter at the unitary point and compare our results with experiments and previous calculations.

Affiliated with

Also associated with

No associations

Rating

Renormalization of the BCS-BEC crossover by order parameter fluctuations does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Renormalization of the BCS-BEC crossover by order parameter fluctuations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Renormalization of the BCS-BEC crossover by order parameter fluctuations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-620677