Tachyon Inflation in Teleparallel Gravity

Abstract

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.

arXiv comment15 pages, 5 figures

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Cited by in corpus (15)

• Teleparallel Gravity: From Theory to Cosmology
• Dynamical Stability Analysis of Accelerating f(T) Gravity Models
• Higgs inflation and teleparallel gravity
• Impact of $H_0$ priors on $f(T)$ late time cosmology
• Constraints on $f(T)$ Cosmology with Pantheon+
• $f(T)$ gravity after DESI Baryon Acoustic Oscillation and DES Supernovae 2024 data
• Well-tempered teleparallel Horndeski cosmology: a teleparallel variation to the cosmological constant problem
• Ghost and Laplacian Instabilities in the Teleparallel Horndeski Gravity
• Inflation with F(T) Teleparallel Gravity
• $f(T)$ cosmology in the regime of quasar observations
• Tachyonic cosmology with cubic contractions of the Riemann tensor
• $f(T)$ Cosmology with Nonzero Curvature
• Modified Teleparallel Gravity induced by quantum fluctuations
• Cosmology and perturbations in tachyonic massive gravity
• Global portraits of nonminimal teleparallel inflation