Inflationary dynamics of non-canonical scalar field model well-known potentials
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ORIGINAL ARTICLE
Inflationary dynamics of non-canonical scalar field model well-known potentials Abdul Jawad1
· Azmat Rustam1
Received: 3 December 2019 / Accepted: 8 August 2020 / Published online: 13 August 2020 © Springer Nature B.V. 2020
Abstract We present the inflation in the context of warm universe model by contemplating the Dirac-Born-Infeld non-canonical scalar field. We concentrate on warm DBI inflation considering the constant sound of speed. Inflationary theory has ability to provide strong solutions to cosmological puzzles of early universe. We contemplate the Anti-de Sitter warp factor for DBI inflation also, examine viability of the quadratic and quartic potential according to Planck 2018 observational data. We find the slow-roll parameters as well as different inflationary parameters in the presence of well-known potentials. We demonstrate graphical behavior of the r − N, ns − N and α − N for both positive as well as negative potentials. The results of ns − N , +0.00025 r − N and α − N are 0.9525+0.0125 −0.0125 , −0.00015−0.00025 , +0.03375 0.03375−0.03375 (for positive quadratic and quartic poten-
+0.05 +0.0018125 tial) and 0.98+0.03 −0.03 , 0.05−0.05 , 0.0018125−0.0018125 (for negative quadratic and quartic potential), respectively. Also, we conclude that results of the r, ns and α are consistent with recent Planck data 2018.
Keywords Warm DBI inflation · Quadratic and quartic potential · Inflationary parameters
1 Introduction Inflation is well founded model that demonstrate the early physics of the universe. A short time ago, a rapidly expan-
B A. Jawad
[email protected]; [email protected] A. Rustam [email protected]
1
Department of Mathematics, COMSATS University Islamabad, Lahore-Campus, Lahore 54000, Pakistan
sion phase has started in our universe according to the observational data. In addition to solving the many hotness defects issues, like the horizon, the flatness, and the monopole problems, inflation provide us a proper solution to the explanation of universal large-scale structure (LSS). Quantity of universe is about 68.5% dark energy (DE), 20.8% dark matter (DM) and 4.9% are a small part of photons and neutrons. These measurements agree to the validation of the model of hot big bang. The vast and deeper depth of the experience and exercises that support these basic principles assures us that this model of the cosmos is the strong foundation. Einstein was the first person who gained the basic law of gravity. Cosmic physics mostly dependent on maximum scale of whole universe because effect of gravity power is consider very important. The trend of DM and DE are two important events, which requires a more basic examination of the law of gravity (Ma and Wang 2014). The universe expands very fast. This everlasting acceleration expansion is due to feminist element, it has negative pressure and called the DE. A lot of models have already been proposed to become a candidate of DE so, they are called cosmological constant (Peebles and Ratra 2013), quintessence (Ratra
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