Einstein and Rastall theories of gravitation in comparison

Darabi, F. (Aff1, 0000 0004 0526 1998, Research Institute for Astronomy and Astrophysics of Maragha (RIAAM), 55134-441, Maragha, Iran) (Aff2, 0000 0004 0417 5692, Department of Physics, Azarbaijan Shahid Madani University, Tabriz, Iran) ; Moradpour, H. (Aff1, 0000 0004 0526 1998, Research Institute for Astronomy and Astrophysics of Maragha (RIAAM), 55134-441, Maragha, Iran) ; Licata, I. (Aff3, ISEM, Institute for Scientific Methodology, Palermo, PA, Italy) (Aff4, School of Advanced International Studies on Applied Theoretical and Non Linear Methodologies in Physics, Bari, Italy) ; Heydarzade, Y. (Aff1, 0000 0004 0526 1998, Research Institute for Astronomy and Astrophysics of Maragha (RIAAM), 55134-441, Maragha, Iran) (Aff2, 0000 0004 0417 5692, Department of Physics, Azarbaijan Shahid Madani University, Tabriz, Iran) ; Corda, C. (Aff1, 0000 0004 0526 1998, Research Institute for Astronomy and Astrophysics of Maragha (RIAAM), 55134-441, Maragha, Iran)

13 January 2018

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.


Published in: EPJC 78 (2018) 25
Published by: Springer/Società Italiana di Fisica
DOI: 10.1140/epjc/s10052-017-5502-5
License: CC-BY-3.0



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