Abstract
We study the convergence of a functional renormalization group technique by looking at the ratio between the fermion-fermion scattering length and the dimer-dimer scattering length for a system of nonrelativistic fermions. We find that in a systematic expansion in powers of the fields there is a rapid convergence of the result that agrees with known exact results. © 2011 American Physical Society.
Original language | English |
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Article number | 023621 |
Journal | Physical Review A |
Volume | 83 |
Issue number | 2 |
DOIs | |
Publication status | Published - 28 Feb 2011 |
Keywords
- Condensed Matter - Quantum Gases
- Nuclear Theory
- Physics - Atomic Physics