Dynamics of extended bodies in general relativity center-of-mass description and quasirigidity

Details Dynamics of extended bodies in general relativity center-of-mass description and quasirigidity Dynamics of extended bodies in general relativity center-of-mass description and quasirigidity

Mar 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977gregr...8..197e&link_type=abstract

General Relativity and Gravitation, Volume 8, Issue 3, pp.197-217

Physics

77

Scientific paper

Dixon's approach to describe the dynamics of extended bodies in metric theories of gravity is elaborated. The exact, general relation between the center-of-mass 4-velocity and the 4-momentum is derived. Quasirigid bodies are defined, and their equations of motion are shown to be determinate for a given metric. Multipole approximations are considered, and the physical meaning of quasirigidity is investigated by establishing an approximate connection with continuum mechanics.

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