Rotational friction and diffusion of quantum rotors
arXiv:1712.05163 · doi:10.1103/PhysRevLett.121.040401
Abstract
We present the Markovian quantum master equation describing rotational decoherence, friction, diffusion, and thermalization of planar, linear, and asymmetric rotors in contact with a thermal environment. It describes how an arbitrary initial rotation state decoheres and evolves toward a Gibbs-like thermal ensemble, as we illustrate numerically for the linear and the planar top, and it yields the expected rotational Fokker-Planck equation of Brownian motion in the semiclassical limit.
9 pages, 3 figures. v2: Corresponds to the published version
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