Issue |
EPL
Volume 146, Number 6, June 2024
|
|
---|---|---|
Article Number | 69001 | |
Number of page(s) | 6 | |
Section | Gravitation, cosmology and astrophysics | |
DOI | https://doi.org/10.1209/0295-5075/ad4c02 | |
Published online | 09 July 2024 |
Modified gravity theories from the Barrow hypothesis
1 Department of Physics, Indian Institute of Technology Madras - Chennai 600 036, India
2 Bethe Center for Theoretical Physics, Physikalisches Institut der Universität Bonn - Nussallee 12, 53115 Bonn, Germany
Received: 27 March 2024
Accepted: 15 May 2024
Barrow proposed that quantum gravity effects might introduce fractal corrections to the area of the event horizon of black holes. The area law gets modified as , with . It was so far unclear whether this assumption could lead to meaningful quantum gravity theories beyond general relativity. In this paper, we argue that this is indeed the case. In particular, assuming Δ to be a radial function, we show that the Barrow hypothesis, together with Jacobson's approach can generate non-trivial modified gravity theories.
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