Tachyon inflation in teleparallel gravity

We present a tachyonic field inflationary model in a teleparallel framework. We show that tachyonic coupled with the f(T) gravity model can describe the inflation era in which f(T) is an arbitrary function of torsion scalar T. For this purpose, dynamical behavior of the tachyonic field in different...

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Bibliographic Details
Published in:The European physical journal. C, Particles and fields Particles and fields, 2019-04, Vol.79 (4), p.1-8, Article 366
Main Authors: Rezaei Akbarieh, Amin, Izadi, Yousef
Format: Article
Language:English
Subjects:
Analysis
Astronomy
Astrophysics and Cosmology
Confidence intervals
Elementary Particles
Gravitation
Hadrons
Heavy Ions
Inflation (Economics)
Measurement Science and Instrumentation
Nuclear Energy
Nuclear Physics
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Regular Article - Theoretical Physics
String Theory
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Summary:We present a tachyonic field inflationary model in a teleparallel framework. We show that tachyonic coupled with the f(T) gravity model can describe the inflation era in which f(T) is an arbitrary function of torsion scalar T. For this purpose, dynamical behavior of the tachyonic field in different potentials is studied, it is shown that the tachyonic field with these potentials can be an effective candidate for inflation. Then, we discuss slow-roll conditions and show that by the appropriate choice of the parameters, the inflation era can be explained via this model. Finally, we argue that our model not only satisfies the result of BICEP2, Keck Array and Plank for the upper limit of r < . 012 but also, the obtained value for spectral index n s is compatible with the results of Plank and also Plank + WMAP + HighL + BAO at the 68% confidence level.
ISSN:1434-6044
1434-6052
DOI:10.1140/epjc/s10052-019-6819-z