The Roentgen interaction and forces on dipoles in time-modulated optical fields

Abstract

The Roentgen term is an often neglected contribution to the interaction between an atom and an electromagnetic field in the electric dipole approximation. In this work we discuss how this interaction term leads to a difference between the kinetic and canonical momentum of an atom which, in turn, leads to surprising radiation forces acting on the atom. We use a number of examples to explore the main features of this interaction, namely forces acting against the expected dipole force or accelerations perpendicular to the beam propagation axis.

References in corpus (3)

• Probing Dark Energy with Atom Interferometry
• Momentum exchange between light and a single atom: Abraham or Minkowski?
• Will a decaying atom feel a friction force?

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• Phase space density limitation in laser cooling without spontaneous emission