D-brane and exponential potentials inspire warm inflation and swampland conjecture
Sadiq S. Azhar N. Myrzakulov N. Toktarbay S. Muratkhan A. Shaymatov S. Jawad A.
September 2025Elsevier B.V.
Nuclear Physics B
2025#1018
This research explores the rapid expansion period of the early universe by applying the Chaplygin gas model, an alternative cosmological framework, to analyze the dynamics of inflationary processes. This study assesses the compatibility of three widely studied scalar field potentials with the latest observational constraints derived from the Planck datasets. Our analysis includes inflationary parameters such as slow-roll parameters, scalar power spectrum PR, scalar spectral index ns, dissipative ratio R, tensor-to-scalar ratio r and running of the scalar spectral index [Formula presented], within the theoretical frameworks of canonical scalar field dynamics and the Chaplygin gas cosmological model. These parameters help to paint a comprehensive picture of the inflationary epoch and its impact on the observable Universe. We also address the generalized ratio of the swampland de-Sitter conjecture through the expression of [Formula presented] for three different potentials. We analyze inflation driven by a scalar field ϕ with decay rate [Formula presented], where Cϕ is a dimensionless coupling and a controls dissipation strength. Working in the strong dissipative regime (R≫1), we systematically investigate the background evolution and perturbation spectrum, deriving inflationary observables.
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Department of Mathematics, COMSATS University Islamabad, Lahore-Campus, Lahore, 54000, Pakistan
Department of Mathematics, National University of Modern Languages (NUML), Lahore Campus, Lahore, 54000, Pakistan
Research Center of Astrophysics and Cosmology, Khazar University, 41 Mehseti Street, Baku, AZ1096, Azerbaijan
Institute for Experimental and Theoretical Physics, Al-Farabi Kazakh National University, Almaty, 050040, Kazakhstan
L. N. Gumilyov Eurasian National University, Astana, 010008, Kazakhstan
New Uzbekistan University, Movarounnahr Str. 1, Tashkent, 100000, Uzbekistan
University of Tashkent for Applied Sciences, Str. Gavhar 1, Tashkent, 100149, Uzbekistan
Western Caspian University, Baku, AZ1001, Azerbaijan
Institute for Theoretical Physics and Cosmology, Zhejiang University of Technology, Hangzhou, 310023, China
Department of Mathematics
Department of Mathematics
Research Center of Astrophysics and Cosmology
Institute for Experimental and Theoretical Physics
L. N. Gumilyov Eurasian National University
New Uzbekistan University
University of Tashkent for Applied Sciences
Western Caspian University
Institute for Theoretical Physics and Cosmology
10 лет помогаем публиковать статьи Международный издатель
Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026