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.
| Original language | English |
|---|---|
| Pages (from-to) | 1984-1990 |
| Number of pages | 7 |
| Journal | Physical Review A |
| Volume | 29 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 1984 |
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