Physics – Quantum Physics
Scientific paper
2010-03-19
Physical Review Letters 104 (7), 070404 (2010)
Physics
Quantum Physics
4 pages, 3 figures
Scientific paper
10.1103/PhysRevLett.104.070404
We study the scaling behaviour of dispersion potentials and forces under very general conditions. We prove that a rescaling of an arbitrary geometric arrangement by a factor a changes the atom-atom and atom-body potentials in the long-distance limit by factors 1/a^7 and 1/a^4, respectively and the Casimir force per unit area by 1/a^4. In the short-distance regime, electric and magnetic bodies lead to different scaling behaviours. As applications, we present scaling functions for two atom-body potentials and display the equipotential lines of a plate-assisted two-atom potential.
Babington James
Buhmann Stefan Yoshi
Scheel Stefan
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