Cosmological constant due to quantum corrections to the effective potential

V. A. Filippov; R. M. Iakhibbaev; D. I. Kazakov; D. M. Tolkachev

doi:10.54546/NaturalSciRev.100103

Keywords: Quantum field theory, Inflationary cosmology, The renormalisation group

V. A. Filippov^1,2, R. M. Iakhibbaev¹, D. I. Kazakov¹, D. M. Tolkachev^1,3@

¹ Bogoliubov Laboratory of Theoretical Physics

² Joint Institute for Nuclear Research, Dubna, Russia

³ B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, Minsk, Belarus

DOI: 10.54546/NaturalSciRev.100103

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Submitted: 18.09.2024

Accepted: 03.12.2024

Published: 16.12.2024

How to Cite

V. A. Filippov, R. M. Iakhibbaev, D. I. Kazakov, D. M. Tolkachev "Cosmological constant due to quantum corrections to the effective potential" Natural Sci. Rev. 1 3 (2024)
https://doi.org/10.54546/NaturalSciRev.100103

Abstract

Using the generalized renormalisation group formalism, we calculate quantum corrections to the effective potential in α-attractor models describing the inflationary stage of the Universe evolution. We demonstrate that quantum corrections lead to a change in the initial classical potential, changing its value at the minimum, which can be interpreted as a manifestation of the cosmological constant or dark energy.

Acknowledgements

The authors are grateful to I. Buchbinder, S. Fedoruk, and A. Baushev for valuable discus-sions.

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