Chiral discrimination in two dimensions

Chiral gravity in two dimensions

It is shown that conformal matter with cL 6= cR can be consistently coupled to two-dimensional ‘frame’ gravity. The theory is quantized, following David, and Distler and Kawai, using the derivation of their ansatz due to Mavromatos and Miramontes, and D’Hoker and Kurzepa. New super-selection rules are found by requiring SL(2,C) invariance of correlation functions on the plane. There is no analo...

Chiral discrimination in NMR spectroscopy.

Nuclear magnetic resonance is the most important form of molecular spectroscopy in chemistry and biochemistry but it is normally blind to chirality. It was predicted in 2004 that precessing nuclear spins in chiral molecules in a liquid in a strong magnetic field induce a rotating electric polarization that is of opposite sign for enantiomers. This polarization arises from the distortion of the ...

Chiral Discrimination in Optical Binding

The laser-induced intermolecular force that exists between two or more particles in the presence of an electromagnetic field is commonly termed ‘optical binding’. Distinct from the single-particle forces that are at play in optical trapping at the molecular level, the phenomenon of optical binding is a manifestation of the coupling between optically induced dipole moments in neutral particles. ...

Chiral discrimination by phosphorescence

Chiral Gravity in Three Dimensions

Three dimensional Einstein gravity with negative cosmological constant −1/l2 deformed by a gravitational Chern-Simons action with coefficient 1/μ is studied in an asymptotically AdS3 spacetime. It is argued to violate unitary or positivity for generic μ due to negativeenergy massive gravitons. However at the critical value μl = 1, the massive gravitons disappear and BTZ black holes all have mas...