A phase space for gravitational radiation.

Details A phase space for gravitational radiation. A phase space for gravitational radiation.

Jun 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995cmaph.166..483h&link_type=abstract

Commun. Math. Phys., Vol. 166, No. 3, p. 483 - 502

Physics

Gravitational Radiation: General Relativity

Scientific paper

The authors give a new definition, based on considerations of well-posedness for a certain asymptotic initial value problem, of the phase space for the radiative degrees of freedom of the gravitational field in exact General Relativity. This space fibres over the space of final states, with the fibres being the purely radiative degrees of freedom. The symplectic form is rigorously identified. The infrared sectors are shown to be the level surfaces of a moment map of an action of the quotient group Supertranslations/Translations. A similar result holds for Electromagnetism in Minkowski space.

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