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18 records were found.

Comment: 19 pages, 3 figures
Comment: 5 pages, no figures, submitted to Phys. Rev. Lett
Comment: 13 pages, no figures, submitted to Physica A
Comment: 21 pages, 6 figures included
We present a study of atom-wall interactions in non-relativistic quantum electrodynamics by functional integral methods. The Feynman-Kac path integral representation is generalized when the particle interacts with a radiation field, providing an additional effective potential that contains all the interactions induced by the field. We show how one can retrieve the standard van der Waals, Casimir-Polder and classical Lifshiftz forces in this formalism for an atom in its ground state. Moreover, when electrostatic interactions are screened in the medium, we find low-temperature corrections that are not included in the Lifshitz theory of fluctuating forces and are opposite to them.
Comment: 34 pages, 0 figures. New version includes restructured intro and minor typos corrected
Comment: 31 pages, 0 figures, submitted to Journal of Statistical Physics
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