Singular-value gaps of generators and two-point motions control L2 relaxation of non-reversible Markov processes, yielding a proof of the Diaconis–Miclo square-root speedup for lifted walks plus sharp bounds for switching flows and Langevin dynamics.
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Relaxation times of non-reversible Markov processes
Singular-value gaps of generators and two-point motions control L2 relaxation of non-reversible Markov processes, yielding a proof of the Diaconis–Miclo square-root speedup for lifted walks plus sharp bounds for switching flows and Langevin dynamics.