Work

Formation and evolution of a 2-brane structure in multidimensional f(R) gravity

Year: 2025

Type: article

Abstract: It has been previously shown that multidimensional [Formula: see text] gravity can lead to a two-brane structure. In this paper, we analyze such a model with a spatially flat 4D de Sitter (dS) cosmology whose Hubble parameter H determines the universal energy scale. We show that the two-brane metric is nucleated at the highest energies. The distance between the branes grows gradually as the energy decreases, tending to a finite value at zero energy density. It is stated that the physical parameters such as the 4D Planck mass, the Higgs vacuum expectation value, and vacuum energy density vary with the evolving universal energy scale, even on the classical level. We also show that the Higgs vacuum expectation value is different on different branes.

Source: International Journal of Modern Physics D

DOI: 10.1142/s0218271825500889

Authors: Kirill A. Bronnikov, Arkady A. Popov, Sergey G. Rubin

Institutions: Peoples' Friendship University of Russia, Federal Budgetary Institution "Research Center for Applied Metrology - Rostest", National Research Nuclear University MEPhI, Kazan Federal University

Language: English

Topic: Cosmology and Gravitation Theories

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: Ministry of Science and Higher Education of the Russian Federation, Kazan Federal University

Awards: G1312401664, G3841851983, G3909328266, G6743186951, G8079625108