Einstein-Grisaru-Zanon gravity
- authored by
- Ruben Campos Delgado, Sergei V. Ketov
- Abstract
The leading (α′)3-correction to the gravitational low-energy effective action of closed (type II) superstring theory in four-spacetime dimensions defines the Einstein-Grisaru-Zanon gravity action that is applied for a calculation of the leading corrections to the Schwarzschild solution and the Hubble function in the Friedmann-Lemaitre-Robertson-Walker universe, in the first order with respect to the effective string-generated coupling. The solutions found are compared to the corresponding solutions in the Einstein-Bel-Robinson gravity that also modifies the Einstein gravity by the terms quartic in the spacetime curvature. We consider the black hole shadows in the Einstein-Grisaru-Zanon gravity theory and derive the upper bound on the string coupling parameter from the Hawking temperature of a black hole.
- Organisation(s)
-
Institute of Theoretical Physics
- External Organisation(s)
-
Tokyo Metropolitan University
Tomsk Polytechnic University
University of Tokyo
- Type
- Letter
- Journal
- Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
- Volume
- 855
- No. of pages
- 5
- ISSN
- 0370-2693
- Publication date
- 08.2024
- Publication status
- Published
- Peer reviewed
- Yes
- ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Electronic version(s)
-
https://doi.org/10.1016/j.physletb.2024.138811 (Access:
Open)
