Hund's paradox and the collisional stabilization of chiral molecules.

We identify the dominant collisional decoherence mechanism which serves to stabilize and superselect 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 us to predict the experimental conditions for observing the collisional suppression of the tunneling dynamics between the left- and the right-handed configuration of D2S2 molecules.

[1]  G. Winnewisser.  Millimetre, submillimetre and infrared spectra of disulphane (HSSH) and its isotopic species , 1991 .

[2]  M. Child,et al.  Molecular Collision Theory , 1976 .

[3]  A. Dalgarno,et al.  The dipole spectrum and properties of helium , 1965 .

[4]  Marvin Waldman,et al.  Ab Initio Atomic Polarizability Tensors for Organic Molecules , 2002 .

[5]  J. Davenport.  Editor , 1960 .

[6]  B. R. Johnson,et al.  The multichannel log-derivative method for scattering calculations , 1973 .

[7]  Monitoring approach to open quantum dynamics using scattering theory , 2006, quant-ph/0612078.

[8]  Robert A. Harris,et al.  On the time dependence of optical activity , 1981 .

[9]  R. Alicki,et al.  Decoherence and the Appearance of a Classical World in Quantum Theory , 2004 .

[10]  Samuel H. Brown,et al.  Interference of electric and magnetic dispersion forces between optically active and inactive molecules , 1980 .

[11]  I. Stamatescu,et al.  Decoherence and the Appearance of a Classical World in Quantum Theory , 1996 .

[12]  Yong Li,et al.  Generalized Stern-Gerlach effect for chiral molecules. , 2007, Physical review letters.

[13]  W. Zurek.  Decoherence, einselection, and the quantum origins of the classical , 2001, quant-ph/0105127.

[14]  The low density limit for anN-level system interacting with a free bose or fermi gas , 1985 .

[15]  E. Joos,et al.  The emergence of classical properties through interaction with the environment , 1985 .

[16]  Robert A. Harris,et al.  Two state systems in media and “Turing's paradox” , 1982 .

[17]  W. Zurek.  Pointer Basis of Quantum Apparatus: Into What Mixture Does the Wave Packet Collapse? , 1981 .

[18]  Martin Quack,et al.  How important is parity violation for molecular and biomolecular chirality? , 2002, Angewandte Chemie.

[19]  M. Simonius.  Spontaneous Symmetry Breaking and Blocking of Metastable States , 1978 .

[20]  F. Hund.  Zur Deutung der Molekelspektren. III. , 1927 .

[21]  P. Král,et al.  Theory of a two-step enantiomeric purification of racemic mixtures by optical means: The D2S2 molecule , 2003 .