Observational constraints on the massive neutrinos induced late-time cosmic acceleration
Sharma M.K. Pacif S.K.J. Myrzakul S. Shanina Z.
1 August 2022Institute of Physics
Physica Scripta
2022#97Issue 8
We investigate a late-time cosmological scenario at the both cosmological background and linear perturbative level which is based on a mass-less λ ϕ 4 theory in which the scalar field is inextricably coupled to massive neutrino matter with Z 2 symmetry by a well defined conformal coupling. The chosen coupling generically leads to the spontaneous symmetry breaking at late times, as the coupling builds up dynamically, such that the field acquires a non-zero mass proportional to the neutrino mass and rolls down slowly around the true ground state which emerges after spontaneous symmetry breaking. From our parametric estimations, we find the given scenario is well supported by the background level cosmological observations and is also in a good agreement with the evolution of growth of matter perturbations.
cosmic acceleration , massive neutrino , observational constraints , perturbation
Text of the article Перейти на текст статьи
Department of Physics & Astrophysics, University of Delhi, Delhi, 110007, India
Centre for Cosmology and Science Popularization(CCSP), SGT University, Delhi-NCR Gurugram, 122505, India
Center for Theoretical Physics, Eurasian National University, Astana, 010008, Kazakhstan
Ratbay Myrzakulov Eurasian International Centre for Theoretical Physics, Nur-Sultan, 010009, Kazakhstan
Department of Physics & Astrophysics
Centre for Cosmology and Science Popularization(CCSP)
Center for Theoretical Physics
Ratbay Myrzakulov Eurasian International Centre for Theoretical Physics
10 лет помогаем публиковать статьи Международный издатель
Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026