Electric field commutation relation in the presence of a dipole atom
- 1 April 1984
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 29 (4) , 1984-1990
- https://doi.org/10.1103/physreva.29.1984
Abstract
A calculation is presented of the unequal-time electric field commutation relation for an electromagnetic field coupled to a general multilevel atom treated as a nonrelativistic system. Use is made of the multipolar Hamiltonian in its dipole approximate form to describe the atom-field interaction. Contributions to the commutator in addition to the usual Pauli-Jordan results for a free field are found, and a physical interpretation of their origin is offered.Keywords
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