Spin–rotation couplings: spinning test particles and Dirac field

Dirac Particles in a Gravitational Field

A Generalization of Dirac Non–Linear Electrodynamics, and Spinning Charged Particles

In this note —dedicated to Prof. Asim O. Barut— we generalize the Dirac non-linear electrodynamics, by introducing two potentials (namely, the vector potential A and the pseudo-vector potential γB of the electromagnetic theory with charges and magnetic monopoles) and by imposing the pseudoscalar part of the product ωω to be zero, with ω ≡ A + γB. We show that the field equations of such a theor...

Anyons as Spinning Particles

Amodel-independent formulation of anyons as spinning particles is presented. The general properties of the classical theory of (2+1)-dimensional relativistic fractional spin particles and some properties of their quantum theory are investigated. The relationship between all the known approaches to anyons as spinning particles is established. Some widespread misleading notions on the general pro...

Kähler spinning particles

We construct the U(N) spinning particle theories, which describe particles moving on Kähler spaces. These particles have the same relation to the N = 2 string as usual spinning particles have to the NSR string. We find the restrictions on the target space of the theories coming from supersymmetry and from global anomalies. Finally, we show that the partition functions of the theories agree with...

Electromagnetic Deeection of Spinning Particles

We show that it is possible to obtain self-consistent and physically acceptable relativistic classical equations of motion for a point-like spin-half particle possessing an electric charge and a magnetic dipole moment, directly from a manifestly covariant Lagrangian, if the classical degrees of freedom are appropriately chosen. It is shown that the equations obtained encompass the well-tested L...