Quadratic Rastall gravity: from low-mass HESS J1731−347 to high-mass PSR J0952−0607 pulsars

Abstract Similar to Rastall gravity we introduce matter-geometry nonminimal coupling which is proportional to the gradient of quadratic curvature invariants. Those are mimicking the conformal trace anomaly when backreaction of the quantum fields to a curved spacetime geometry is considered. We consi...

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Bibliographic Details
Main Author: Waleed El Hanafy
Format: Article
Language:English
Published: SpringerOpen 2024-04-01
Series:European Physical Journal C: Particles and Fields
Online Access:https://doi.org/10.1140/epjc/s10052-024-12713-w