Speaker
Description
In this talk, I will discuss a purely geometric vector field arising in metric-Palatini gravity and its interpretation as a possible fifth force. When metric-Palatini gravity is extended by the antisymmetric part of the affine Ricci tensor together with a matter sector involving the affine connection, the theory dynamically reduces to general relativity together with a massive vector field of geometric origin. This field, identified as the geometric couples universally to fermions while remaining decoupled from scalars and vector bosons as a consequence of its geometric origin. I will discuss how the geometric Z' can serve as a viable dark matter candidate and examine its implications for black hole formation. The talk will highlight how the geometric Z' provides a common framework for fifth force, dark matter, and black hole physics.
| Other topic / keywords: | geometric Z', fifth force, dark matter, black hole |
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