DOAJ Open Access 2025

Intermediate Coupling Regime in Dilatonic f(R,T) Inflationary Universe

Francisco A. Brito Carlos H. A. B. Borges Jose A. V. Campos Francisco G. Costa

Abstrak

In the present work, we study cosmology in dilatonic <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>f</mi><mo>(</mo><mi>R</mi><mo>,</mo><mi>T</mi><mo>)</mo></mrow></semantics></math></inline-formula> gravity to address the inflationary phase of the early universe. As usual, in dilatonic gravity, the scalar potential assumes the exponential form. However, this potential is not good enough to be in accordance with the Planck 2018 data. More strikingly, the generalized <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi>β</mi></semantics></math></inline-formula>-exponential cannot take this into account either. It is just only presence of the dilatonic sector, in the intermediate coupling regime, that can help the theory to be in full accordance with the observational data.

Topik & Kata Kunci

Elementary particle physics

Penulis (4)

Francisco A. Brito

Carlos H. A. B. Borges

Jose A. V. Campos

Francisco G. Costa

Format Sitasi

APA MLA BibTeX

Brito, F.A., Borges, C.H.A.B., Campos, J.A.V., Costa, F.G. (2025). Intermediate Coupling Regime in Dilatonic f(R,T) Inflationary Universe. https://doi.org/10.3390/universe11020065

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Informasi Jurnal

Tahun Terbit: 2025
Sumber Database: DOAJ
DOI: 10.3390/universe11020065
Akses: Open Access ✓