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Beyond Analog Gravity: The Case of Exceptional Dynamics (1102.1913v2)
Published 9 Feb 2011 in gr-qc
Abstract: We show that it is possible to go beyond the simple kinematical aspects of the analog models of gravity. We exhibit the form of the Lagrangian that describes the dynamics of a self-interacting field $ \phi $ as an interaction between $ \phi $ and its associated effective metric $ \hat{g}{\mu\nu}.$ In other words the non-linear equation of motion of the field may be interpreted as the gravitational influence on $ \phi $ by its own effective metric which, in our scheme becomes an active partner of the dynamics of $ \phi. $