Tachyon Inflation in $$\boldsymbol{R+R^{2}}$$ Background

The presence of a tachyon field in $$R+\mu R^{2}$$ theory is considered. Our analysis shows that the tachyon field contribution to the energy density is suppressed, but it affects cosmological parameters; in particular, the spectral index is modified. This model is in agreement with Panck2018 data for some parameter ranges.

Authors

Salomeh Khoeini-Moghaddam (ORCID: https://orcid.org/0000-0003-4283-3310)

Institutions

Kharazmi University (IR)

Publication Details

Journal: Gravitation and Cosmology
Published: 2025-12-01
DOI: https://doi.org/10.1134/s0202289325700409
Primary Topic: Cosmology and Gravitation Theories
Type: article
Field-Weighted Citation Impact: 0.00

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article

Tachyon Inflation in $$\boldsymbol{R+R^{2}}$$ Background

Salomeh Khoeini-Moghaddam

Dec 1, 2025

Gravitation and Cosmology

Cosmology and Gravitation Theories

article

Tachyon Inflation in $$\boldsymbol{R+R^{2}}$$ Background

Salomeh Khoeini-Moghaddam

December 1, 2025article en

Abstract

Gravitation and CosmologyVol. 31(4)

Kharazmi University (IR)

Openalex Percentile: Top 74%

Cosmology and Gravitation Theories

DOI Source OpenAlex

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Tachyon Inflation in $\boldsymbol{R+R^{2}}$ Background — Salomeh Khoeini-Moghaddam · Gravitation and Cosmology (2025) | TGRS Research Map | TGRS