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Static potential renormalization in time‐dependent fields
Author(s) -
Brandes T.
Publication year - 1998
Publication title -
annalen der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.009
H-Index - 68
eISSN - 1521-3889
pISSN - 0003-3804
DOI - 10.1002/andp.2090070206
Subject(s) - physics , renormalization , scattering , microwave , quantum electrodynamics , polarization (electrochemistry) , electric field , plane wave , inelastic scattering , born approximation , computational physics , quantum mechanics , chemistry
We consider the scattering of electrons at a static potential under the influence of an additional time‐dependent, homogeneous electric field (‘microwave’). Starting from a plane wave basis, we derive a generalization of the Born (first) order approximation in arbitrary strong oscillating fields. As an example, we evaluate the Friedel density oscillations around a static scatterer whose potential is renormalized by the microwave. The microwave leads to a band of inelastic scattering channels with effective potentials, the shape of which can be ‘tuned’ by the microwave polarization and strength.