Variational theory of an ideal spin liquid in the quadratic theory of gravitation in a RiemannCartan space
Abstract
A variational theory of an ideal WeyssenhoffRaabe spin liquid in a RiemannCartan space is constructed in the metric theory of gravitation (taking into account the quadratic invariants in the Lagrangian). The couplings which arise in the theory and are imposed on the dynamical variables are taken into account in the action integral with the help of the method of undetermined Lagrange multipliers. The canonical energymomentum tensor of an ideal spin liquid arises in a natural manner as a source on the right side of the gravitational field equations.
 Publication:

Soviet Physics Journal
 Pub Date:
 October 1989
 DOI:
 10.1007/BF00898321
 Bibcode:
 1989SvPhJ..32..849B