Disformal transformations and the motion of a particle in semi-classical gravity

• URL: http://arxiv.org/abs/2101.05745v1
• Date: Thu, 14 Jan 2021 17:47:28 GMT
• Title: Disformal transformations and the motion of a particle in semi-classical gravity
• Authors: Sandip Chowdhury, Kunal Pal, Kuntal Pal, Tapobrata Sarkar
• Abstract summary: We show how to incorporate quantum effects in gravity by replacing free particle geodesics with Bohmian non-geodesic trajectories. For more general disformal transformations, we show how to establish this equivalence by taking the quantum effects inside the disformal degrees of freedom.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The approach to incorporate quantum effects in gravity by replacing free particle geodesics with Bohmian non-geodesic trajectories has an equivalent description in terms of a conformally related geometry, where the motion is force free, with the quantum effects inside the conformal factor, i.e., in the geometry itself. For more general disformal transformations relating gravitational and physical geometries, we show how to establish this equivalence by taking the quantum effects inside the disformal degrees of freedom. We also show how one can solve the usual problems associated with the conformal version, namely the wrong continuity equation, indefiniteness of the quantum mass, and wrong description of massless particles in the singularity resolution argument, by using appropriate disformal transformations.

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