title: Nonequilibrium electromagnetic fluctuations: heat transfer and interactions.
abstract: The Casimir force between arbitrary objects in equilibrium is related to scattering from individual bodies. We extend this approach to heat transfer and Casimir forces in nonequilibrium cases where each body, and the environment, is at a different temperature. The formalism tracks the radiation from each body and its scatterings by the other objects. We discuss the radiation from a cylinder, emphasizing its polarized nature, and obtain the heat transfer between a sphere and a plate, demonstrating the validity of proximity transfer approximation at close separations and arbitrary temperatures.
authors.affiliation: Massachusetts Institute of Technology, Department of Physics, Cambridge, Massachusetts 02139, USA.
authors.forename: Matthias
authors.initials: M
authors.lastname: Krüger
authors.forename: Thorsten
authors.initials: T
authors.lastname: Emig
authors.forename: Mehran
authors.initials: M
authors.lastname: Kardar