Quantum spin dynamics in external classical fields
1 Theor. Physics Lab., IBRAE, Russian Academy of Sciences, B. Tulskaya 52, 115191 Moscow, Russia
2 Research Institute for Nuclear Problems, Belarusian State University, Minsk 220030, Belarus
3 Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, Dubna 141980, Russia
4 National Research Nuclear University "MEPhI", Kashirskoe Shosse 31, 115409 Moscow, Russia
Published online: 3 April 2019
We study the quantum and classical dynamics of spinning particles in the framework of the general-relativistic covariant Dirac theory. The exact Foldy-Wouthuysen transformation for the most general case of a fermion in arbitrary configurations of the gravitational, inertial and electromagnetic fields is derived. We demonstrate the complete consistency of the quantum and classical dynamics. As physical applications, we discuss prospects of probing spacetime structure and using spin effects for gravitational wave detection.
© The Authors, published by EDP Sciences, 2019