Renormalisation Flow and Universality for Ultracold Fermionic Atoms Export

@misc{citeulike:1177174, abstract = {A functional renormalisation group study for the BEC-BCS crossover for ultracold gases of fermionic atoms is presented. We discuss the fixed point which is at the origin of universality for broad Feshbach resonances. All macroscopic quantities depend only on one relevant parameter, the concentration a k\_F, besides their dependence on the temperature in units of the Fermi energy. In particular, we compute the universal ratio between molecular and atomic scattering length in vacuum. We also present an estimate to which level of accuracy universality holds for gases of Li and K atoms.}, archivePrefix = {arXiv}, author = {Diehl, S. and Gies, H. and Pawlowski, J. M. and Wetterich, C.}, citeulike-article-id = {1177174}, citeulike-linkout-0 = {http://arxiv.org/abs/cond-mat/0703366,%20noraise}, citeulike-linkout-1 = {http://arxiv.org/pdf/cond-mat/0703366,%20noraise}, day = {14}, eprint = {cond-mat/0703366,\%20noraise}, keywords = {fermi\_gas, rg, unitary}, month = {Mar}, posted-at = {2007-03-20 10:48:49}, priority = {3}, title = {Renormalisation Flow and Universality for Ultracold Fermionic Atoms}, url = {http://arxiv.org/abs/cond-mat/0703366,%20noraise}, year = {2007} }

TY - ELEC ID - citeulike:1177174 L3 - citeulike-article-id:1177174 N2 - A functional renormalisation group study for the BEC-BCS crossover for ultracold gases of fermionic atoms is presented. We discuss the fixed point which is at the origin of universality for broad Feshbach resonances. All macroscopic quantities depend only on one relevant parameter, the concentration a k_F, besides their dependence on the temperature in units of the Fermi energy. In particular, we compute the universal ratio between molecular and atomic scattering length in vacuum. We also present an estimate to which level of accuracy universality holds for gases of Li and K atoms. TI - Renormalisation Flow and Universality for Ultracold Fermionic Atoms KW - fermi_gas KW - rg KW - unitary AU - Diehl, S AU - Gies, H AU - Pawlowski, JM AU - Wetterich, C PY - 2007/Mar/14/ UR - http://arxiv.org/abs/cond-mat/0703366,%20noraise ER -