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quant-ph1999
The Large Time Behaviour in Quantum Field Theory and Quantum Chaos
I. Ya. Aref'eva, I. V. Volovich
An exact general formula for the matrix elements of the evolution operator in quantum theory is established. The formul ("ABC-formula") has the form <U(t)>=exp(At+B+C(t)). The cons…
quant-ph1999
Quantum Decoherence and Higher Order Corrections to the Large Time Exponential Behaviour
I. Ya. Aref'eva, I. V. Volovich
There exists the well known approximate expression describing the large time behaviour of matrix elements of the evolution operator in quantum theory: <U(t)>=exp(at)+... This expre…