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2018•The European Physical Journal COpen access

Einstein and Rastall theories of gravitation in comparison

F. Darabi, H. Moradpour, Ignazio Licata, Y. Heydarzade, Christian Corda

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Abstract

We profit by a recent paper of Visser claiming that Rastall gravity is equivalent to Einstein gravity to compare the two gravitational theories in a general way. Our conclusions are different from Visser’s ones. We indeed argue that these two theories are not equivalent. In fact, Rastall theory of gravity is an “open” theory when compared to Einstein general theory of relativity. Thus, it is ready to accept the challenges of observational cosmology and quantum gravity.

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What this paper is about

We profit by a recent paper of Visser claiming that Rastall gravity is equivalent to Einstein gravity to compare the two gravitational theories in a general way. Our conclusions are different from Visser’s ones. We indeed argue that these two theories are not equivalent. In fact, Rastall theory of gravity is an “open” theory when compared to Einstein general theory of relativity. Thus, it is ready to accept the challenges of observational cosmology and quantum gravity.

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OpenAlex reports 225 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available abstract

We profit by a recent paper of Visser claiming that Rastall gravity is equivalent to Einstein gravity to compare the two gravitational theories in a general way. Our conclusions are different from Visser’s ones. We indeed argue that these two theories are not equivalent. In fact, Rastall theory of gravity is an “open” theory when compared to Einstein general theory of relativity. Thus, it is ready to accept the challenges of observational cosmology and quantum gravity.

Key concepts: Einstein, Gravitation, Mathematical physics, Parameterized post-Newtonian formalism, Physics, Theoretical physics, Classical mechanics, Classical field theory

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