TIME REVERSAL AND PARITY SYMMETRY BREAKINGS OF MEAN FIELDS BY PROPAGATION
1996
The time-independent mean-field method for the calculation of matrix elements of nonrelativistic propagators is based on a variational principle whose nonlinearity induces a multiplicity of variational solutions. Several of them can break any symmetry shared by the Hamiltonian and initial and final states. We describe a soluble model where, in particular, time reversal and parity breakings occur. Such breakings account for important properties of propagation amplitudes. \textcopyright{} 1996 The American Physical Society.
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