Dispersive atom interferometry phase shifts due to atom-surface interactions S. Lepoutre, H. Jelassi, V. P. A. Lonij, G. Trénec, M. Büchner, A. D. Cronin and J. Vigué EPL, 88 2 (2009) 20002 Published online: 28 October 2009 DOI: 10.1209/0295-5075/88/20002