Jul 5 – 10, 2021
Europe/Rome timezone

Spinning particle: Is Newton-Wigner the only way?

Jul 5, 2021, 6:01 PM
Talk in the parallel session Dragging is never draggy: MAss and CHarge flows in GR Dragging is Never Draggy: MAss and CHarge Flows in GR


Vojtěch Witzany (University College Dublin)


A rapidly spinning compact object couples to an ambient curved background via the so-called spin-curvature coupling. In expressing this, one has to deal with the ambiguity of the definition of the center of mass of the body. What is worse, in a Hamiltonian formalism, this choice corresponds to an unphysical "parasitic" degree of freedom in the dynamical system. A solution to this is to apply a Hamiltonian constraint on the system and to obtain a set of brackets where the center-of-mass degree of freedom is erased from the algebra. In this talk I will report on my progress in this procedure in the case of the so-called Tulczyjew-Dixon (or "covariant") supplementary spin condition and in my effort to cover the resulting phase space with canonical coordinates.

Primary author

Vojtěch Witzany (University College Dublin)

Presentation materials

There are no materials yet.