  We show empirically that a phase-space non-Born-Oppenheimer electronic
Hamiltonian approach to quantum chemistry (where the electronic Hamiltonian is
parameterized by both nuclear position and momentum, (H(R,P)) is both a
practical and accurate means to recover vibrational circular dichroism spectra.
We further hypothesize that such a phase space approach may lead to very new
dynamical physics beyond spectroscopy circular dichroism, with potential
implications for understanding chiral induced spin selectivity (CISS), noting
that classical phase space approaches conserve the total nuclear plus
electronic momentum, whereas classical Born-Oppenheimer approaches do not (they
conserve only the nuclear momentum)
