Journal
PHYSICAL REVIEW A
Volume 83, Issue 2, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.83.023621
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Funding
- EU [219533]
- STFC [ST/F012047/1, ST/J000159/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/J000159/1, ST/F012047/1] Funding Source: researchfish
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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.
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