arXiv subjects

Johannes Trost

Publications and source records attributed to Johannes Trost.

3 recordsLinked to original sources

arXiv2009

Hund's paradox and the collisional stabilization of chiral molecules

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.

quant-ph↗

arXiv2007

The twisted arc model for chiral molecules

We present a simple model for chiral molecules which yields the frequency-dependent multipole-multipole polarizabilities required for calculating the dispersive van der Waals constants in a simple, closed, and consistent form. The model consists of a single effective charge confined to a one-dimensional wire formed by two circular arcs, which are twisted with respect to each other by an angle characterizing the chirality. The resulting polarizabilities show a simple functional dependence on the model parameters, and they serve to mimic the chiral properties of small molecules, such as H2S2, in a reasonably realistic way.

physics.chem-ph↗

arXiv1998

Schrödinger operators with complex potential but real spectrum

Several aspects of complex-valued potentials generating a real and positive spectrum are discussed. In particular, we construct complex-valued potentials whose corresponding Schrödinger eigenvalue problem can be solved analytically.

quant-ph↗