Casimir momentum of a chiral molecule in a magnetic field.

Phys Rev Lett

Université Grenoble 1/CNRS, LPMMC UMR 5493, 25 rue des Martyrs, Maison des Magistères, 38042 Grenoble, France and LNCMI, UPR 3228 CNRS/INSA/UJF Grenoble 1/UPS, 143 Avenue de Rangueil, 31400 Toulouse and 25 rue des Martyrs, 38042 Grenoble, France.

Published: October 2013

In a classical description, a neutral, polarizable object acquires a kinetic momentum when exposed to crossed electric and magnetic fields. In the presence of only a magnetic field no such momentum exists classically, although it is symmetry allowed for an object lacking mirror symmetry. We perform a full QED calculation to show that the quantum vacuum coupled to a chiral molecule provides it with a kinetic "Casimir" momentum directed along the magnetic field, and proportional to its molecular rotatory power and to the fine structure constant.

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http://dx.doi.org/10.1103/PhysRevLett.111.143602DOI Listing

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