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B. A. Stickler, B. Schrinski, and K. Hornberger
Rotational friction and diffusion of quantum rotors
Phys. Rev. Lett. 121, 040401 (2018)

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.

(6 pages, 3 figures)   [ pdf, journal, arXiv:1712.05163 ]

doi:10.1103/PhysRevLett.121.040401            (c) The American Physical Society


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