A variational Gaussian wavepacket method yields a quantum-corrected Kramers escape rate in the overdamped limit, with an enhancement exponent of hbar beta (omega_0^2 + omega_b^2)/(4 omega_0).
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Dirac's variational approach to semiclassical Kramers problem in Smoluchowski limit
A variational Gaussian wavepacket method yields a quantum-corrected Kramers escape rate in the overdamped limit, with an enhancement exponent of hbar beta (omega_0^2 + omega_b^2)/(4 omega_0).