Cosmological model with fermion and tachyon fields interacting via Yukawa-type potential
arXiv:1602.06874 · doi:10.1142/S0217732316500395
Abstract
A model for the universe with tachyonic and fermionic fields interacting through a Yukawa-type potential is investigated. It is shown that the tachyonic field answers for the initial accelerated regime and for the subsequent decelerated regime so that it behaves as an inflaton at early times and as a matter field at intermediate times, while the fermionic field has the role of a dark energy constituent, since it leads to an accelerated regime at later times. The interaction between the fields via a Yukawa-type potential controls the duration of the decelerated era, since a stronger coupling makes a shorter decelerated period.
9 pages, 1 figure
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- Dirac spinors and their application to Bianchi-I space-times in 5 dimensions
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- Fermionic Tachyons as a Source of Dark Energy
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