--- res: bibo_abstract: - We present an analytic model of the refractive index for matter waves propagating through atomic or molecular gases. The model, which combines the Wentzel-Kramers-Brillouin (WKB) treatment of the long-range attraction with the Fraunhofer model treatment of the short-range repulsion, furnishes a refractive index in compelling agreement with recent experiments of Jacquey [Phys. Rev. Lett.PRLTAO0031-900710.1103/PhysRevLett.98.240405 98, 240405 (2007)] on Li atom matter waves passing through dilute noble gases. We show that the diffractive contribution, which arises from scattering by a two-dimensional "hard core" of the potential, is essential for obtaining a correct imaginary part of the refractive index.@eng bibo_authorlist: - foaf_Person: foaf_givenName: Mikhail foaf_name: Mikhail Lemeshko foaf_surname: Lemeshko foaf_workInfoHomepage: http://www.librecat.org/personId=37CB05FA-F248-11E8-B48F-1D18A9856A87 orcid: 0000-0002-6990-7802 - foaf_Person: foaf_givenName: Břetislav foaf_name: Friedrich, Břetislav foaf_surname: Friedrich bibo_doi: 10.1103/PhysRevA.82.022711 bibo_issue: '2' bibo_volume: 82 dct_date: 2010^xs_gYear dct_publisher: American Physical Society@ dct_title: 'Multiple scattering of matter waves: An analytic model of the refractive index for atomic and molecular gases@' ...