One-Loop Dominance in the Imaginary Part of the Polarizability: Application to Blackbody and Non-Contact van der Waals Friction
arXiv:1411.2967 · doi:10.1103/PhysRevLett.114.043001
Abstract
Phenomenologically important quantum dissipative processes include black-body friction (an atom absorbs counterpropagating blue-shifted photons and spontaneously emits them in all directions, losing kinetic energy) and non-contact van der Waals friction (in the vicinity of a dielectric surface, the mirror charges of the constituent particles inside the surface experience drag, slowing the atom). The theoretical predictions for these processes are modified upon a rigorous quantum electrodynamic (QED) treatment, which shows that the one-loop "correction" yields the dominant contribution to the off-resonant, gauge-invariant, imaginary part of the atom's polarizability at room temperature, for typical atom-surface interactions. The tree-level contribution to the polarizability dominates at high temperature.
5 pages; RevTeX
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- Theory of noncontact friction for atom-surface interactions
- Electromagnetic Viscosity in Complex Structured Environments: From black-body to Quantum Friction
- Nonequilibrium Casimir-Lifshitz force and anomalous radiation heating of a small particle
- How modes shape Casimir Physics
- Spectroscopic footprints of quantum friction in nonreciprocal and chiral media