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J. Trost and K. Hornberger
Hund's paradox and the collisional stabilization of chiral molecules
Phys. Rev. Lett 103, 023202 (2009)


We identify the dominant collisional decoherence mechanism which serves to stabilize and super-select the configuration states of chiral molecules. A high-energy description of this effect is compared to the results of the exact molecular scattering problem, obtained by solving the coupled-channel equations. It allows to predict the experimental conditions for observing the collisional suppression of the tunneling dynamics between the left-handed and the right-handed configuration of D2S2 molecules.

2π erratum:
The expression "ωz/2π=176 Hz" should be replaced by "ωz=176 Hz" (or by "ωz/2π=28 Hz"). The results are unaffected by this.

(4 pages, 1 figure)   [ pdf, journal, arXiv:0811.2140 ]

doi:10.1103/PhysRevLett.103.023202            (c) The American Physical Society

See also Charles Day's article about our work:

C. Day
Month-long calculation resolves 82-year-old quantum paradox
Physics Today, Vol. 62, September 2009, pp. 16-17

(2 pages, 2 figures)   [ pdf, journal ]                 (c) American Institute of Physics