{"paper":{"title":"Bulk viscosity and conformal symmetry breaking in the dilute Fermi gas near unitarity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph","nucl-th"],"primary_cat":"cond-mat.quant-gas","authors_text":"Kevin Dusling (North Carolina State University), Thomas Schaefer (North Carolina State University)","submitted_at":"2013-05-21T01:11:13Z","abstract_excerpt":"The dilute Fermi gas at unitarity is scale invariant and its bulk viscosity vanishes. We compute the leading contribution to the bulk viscosity when the scattering length is not infinite. A measure of scale breaking is provided by the ratio $(P-\\frac{2}{3}{\\cal E})/P$, where $P$ is the pressure and ${\\cal E}$ is the energy density. In the high temperature limit this ratio scales as $\\frac{z\\lambda}{a}$, where $z$ is the fugacity, $\\lambda$ is the thermal wave length, and $a$ is the scattering length. We show that the bulk viscosity $\\zeta$ scales as the second power of this parameter, $\\zeta \\"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1305.4688","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}