| Issue |
EPJ Web of Conferences
Volume 3, 2010
19th International IUPAP Conference on Few-Body Problems in Physics
|
|
|---|---|---|
| Article Number | 02001 | |
| Number of page(s) | 7 | |
| Section | Few-Atom Systems | |
| DOI | https://doi.org/10.1051/epjconf/20100302001 | |
| Published online | 12 April 2010 | |
https://doi.org/10.1051/epjconf/20100302001
Functional renormalization group and conformal invariance in cold atoms
Institut für Theoretische Physik, Philosophenweg
16, D-69120
Heidelberg,
Germany
a e-mail: s.moroz@thphys.uni-heidelberg.de
We present an application of a field-theoretic functional renormalization group technique to fewbody (vacuum) physics of nonrelativistic atoms near a Feshbach resonance. We consider and compare a onecomponent bosonic system with a two-component fermionic system, focusing on the scale-free unitarity limit of an infinite scattering length. While the two-body problem is consistent with nonrelativistic conformal symmetry for the two considered systems, a conformal anomaly, manifested through a renormalization group limit cycle with the Efimov parameter s0 ≈ 1.006, is found for bosons in the three-body problem.
© Owned by the authors, published by EDP Sciences, 2010
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