Open haakoek opened 2 years ago
For any given CC method the time-evolution of the phase tau0 with a time-independent Hamiltonian is given by
i(d/dt)tau0(t) = <Phi0|e^{-T(t)}He^{T(t)}|Phi0> -> tau0(t) = exp(-iEcct), Ecc = <Phi0|e^{-T(0)}He^{T(0)}|Phi0>,
which provides an "exact" test case.
For any given CC method the time-evolution of the phase tau0 with a time-independent Hamiltonian is given by
i(d/dt)tau0(t) = <Phi0|e^{-T(t)}He^{T(t)}|Phi0> -> tau0(t) = exp(-iEcct), Ecc = <Phi0|e^{-T(0)}He^{T(0)}|Phi0>,
which provides an "exact" test case.