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Related papers: Dynamics of Warm Chaplygin Gas Inflationary Models…

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The warm inflation scenario in view of the modified Chaplygin gas is studied. We consider the inflationary expansion is driven by a standard scalar field whose decay ratio $\Gamma$ has a generic power law dependence with the scalar field…

General Relativity and Quantum Cosmology · Physics 2017-11-22 Abdul Jawad , Shahzad Hussain , Shamaila Rani , Nelson Videla

A warm intermediate inflationary model in the context of Generalized Chaplygin Gas is investigated. We study this model in the weak and strong dissipative regimes, considering a generalized form of the dissipative coefficient…

General Relativity and Quantum Cosmology · Physics 2016-02-17 Ramón Herrera , Nelson Videla , Marco Olivares

In the present work, we study the consequences of considering a recently proposed polynomial inflationary potential in the context of the generalized, modified, and generalized cosmic Chaplygin gas models. In addition, we consider…

General Relativity and Quantum Cosmology · Physics 2018-01-17 Abdul Jawad , Shahid Chaudhary , Nelson Videla

Warm inflationary universe models in the context of a Chaplygin gas equation are studied. General conditions required for these models to be realizable are derived and discussed. By using a chaotic potential we develop models for a…

Astrophysics · Physics 2008-12-18 Sergio del Campo , Ramon Herrera

In this paper, we examine the possible realization of a new family of inflation called "shaft inflation" by assuming the modified Chaplygin gas model and tachyon scalar field. We also consider the special form of dissipative coefficient as…

General Relativity and Quantum Cosmology · Physics 2017-03-08 Abdul Jawad , Amara Ilyas , Shamaila Rani

In the present work we show that warm chaotic inflation characterized by a simple $\frac{\lambda}{4}\phi^{4}$ self-interaction potential for the inflaton, excluded by current data in standard cold inflation, and by an inflaton decay rate…

General Relativity and Quantum Cosmology · Physics 2015-10-26 Grigorios Panotopoulos , Nelson Videla

In this work, we investigate warm inflationary models in the context of a general scalar-tensor theory of gravity which is coupled to radiation through a dissipation term. We first derive the potential of exponential and hyperbolic tangent…

General Relativity and Quantum Cosmology · Physics 2022-04-06 Waluka Amake , Apirak Payaka , Phongpichit Channuie

We consider an inflationary universe model in the context of generalized cosmic Chaplygin gas by taking matter field as standard and tachyon scalar fields. We evaluate the corresponding scalar fields and scalar potentials during…

General Relativity and Quantum Cosmology · Physics 2017-08-03 M. Sharif , Rabia Saleem

We investigate the role of bulk viscous pressure on the warm inflationary modified Chaplygin gas in brane-world framework in the presence of standard scalar field. We assume the intermediate inflationary scenario in strong dissipative…

General Relativity and Quantum Cosmology · Physics 2017-02-22 Abdul Jawad , Amara Ilyas , Shamaila Rani

We confront the warm inflation observational predictions directly with the latest CMB data. We focus on a linear temperature (T) dissipative coefficient combined with the simplest model of inflation, a quartic chaotic potential. Although…

Cosmology and Nongalactic Astrophysics · Physics 2018-03-06 Mar Bastero-Gil , Sukannya Bhattacharya , Koushik Dutta , Mayukh Raj Gangopadhyay

The warm inflationary scenario is investigated in the context of affine gravity formalism. A general framework is provided for studying different single-field potentials. Using the sphaleron mechanism we explain the continuous dissipation…

Cosmology and Nongalactic Astrophysics · Physics 2023-11-14 Mahmoud AlHallak

We investigate the warm inflationary scenario within the context of the linear version of f (Q, T ) gravity, coupled with both the inflaton scalar field and the radiation field, under the conditions of the strong dissipation regime. First,…

General Relativity and Quantum Cosmology · Physics 2024-08-14 Maryam Shiravand , Mehrdad Farhoudi , Parviz Goodarzi

Warm inflationary universe model in a tachyon field theory is studied in the weak dissipative regime. We develop our model for an exponential potential and the dissipation parameter $\Gamma=\Gamma_0$=constant. We describe scalar and tensor…

General Relativity and Quantum Cosmology · Physics 2009-12-04 Sergio del Campo , Ramon Herrera , Joel Saavedra

In the present paper we study warm inflationary universe models in the context of a polytropic gas. We derive the characteristics of this model in slow-roll approximation and develop our model in two cases, 1- For a constant dissipative…

General Relativity and Quantum Cosmology · Physics 2015-06-16 M. R. Setare , M. J. S. Houndjo , V. Kamali

In this work, we explored warm inflation in the background of $f(R,T)$ gravity in the strong dissipation regime. Considering scalar field for FLRW universe, we derived modified field equations. We then deduced slow-roll parameters under…

General Relativity and Quantum Cosmology · Physics 2023-11-07 Biswajit Deb , Sabina Yeasmin , Atri Deshamukhya

In this work, we study an inflationary scenario in the presence of Generalized Chaplygin Gas (GCG). We show that in Einstein gravity, GCG is not a suitable candidate for inflation; but in a five dimensional brane world scenario, it can work…

Cosmology and Nongalactic Astrophysics · Physics 2014-10-22 Bikash R Dinda , Sumit Kumar , Anjan A. Sen

The amplitude of primordial curvature perturbations is enhanced when a radiation bath at a temperature T>H is sustained during inflation by dissipative particle production, which is particularly significant when a non-trivial statistical…

High Energy Physics - Phenomenology · Physics 2014-04-03 Sam Bartrum , Mar Bastero-Gil , Arjun Berera , Rafael Cerezo , Rudnei O. Ramos , Joao G. Rosa

In this paper we construct a dissipative quintessential cosmic inflation. For this purpose, we add a multiplicative dissipative term in the standard quintessence field Lagrangian. We consider the specific form of dissipation as the time…

Cosmology and Nongalactic Astrophysics · Physics 2024-07-26 Kourosh Nozari , Fateme Rajabi , Narges Rashidi

Warm inflation is a well-motivated and generalized framework of inflation, describing a coupled inflaton-radiation bath. In this work, we investigate a warm inflation model with a quartic potential and a composite dissipation coefficient…

Cosmology and Nongalactic Astrophysics · Physics 2025-11-14 Ayush Sahu , Richa Arya , Sergio E. Jorás , Karim H. Seleim

In this paper we discuss the inflationary universe in the context of a Chaplygin gas equation of state within the framework of the effective theory of loop quantum cosmology. Under the slow-roll approximation, we calculate the primordial…

General Relativity and Quantum Cosmology · Physics 2009-08-20 Xin Zhang , Jingfei Zhang , Jinglei Cui , Li Zhang
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