Inflation with F(T) teleparallel gravity
Department of Physics, Bankura University, 722155, Bankura, India
2 Department of Physics, Saidabad Manindra Chandra Vidyapith, 742103, Murshidabad, India
3 Department of Physics, Jangipur College, 742213, Murshidabad, India
Accepted: 27 November 2021
Published online: 6 December 2021
We study early universe with a particular form of F(T) teleparallel gravity theory, in which inflation is driven by a scalar field. To ensure slow rollover, two different potentials are chosen in a manner, such that they remain almost flat for large initial value of the scalar field. Inflationary parameters show wonderful fit with the presently available Planck’s data set. The energy scale of inflation is sub-Planckian, and graceful exit from inflation is also administered. The chosen form of F(T) administers late-time cosmic acceleration too. In the process, unification of the early inflation with late-time acceleration is ensured. Unfortunately, a decelerated radiation-dominated era is only possible with a different form of (quartic) potential, which being devoid of a flat section does not admit slow rollover.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2021. corrected publication 2021