The paradigm of warm quintessential inflation and spontaneous baryogenesis

Basak S. Bhattacharya S. Gangopadhyay M.R. Jaman N. Rangarajan R. Sami M.
1 March 2022 IOP Publishing Ltd

Journal of Cosmology and Astroparticle Physics
2022 #2022 Issue 3

In this paper, we consider a scenario of spontaneous baryogenesis in a framework of warm quintessential inflation where the residual inflaton field, left out after warm inflation, plays the role of quintessence field at late times and is coupled to a non-conserved baryonic current. Assuming a four fermion (B-L) violating effective interaction, we have demonstrated that the required baryon asymmetry can be produced successfully in this case. We show that the post-inflationary evolution, with the underlying scalar field potential, V(φ) = V 04exp(-αφ n/M 4Pl), n > 1 well suited to warm inflation, exhibits scaling behaviour soon after a brief kinetic regime. We show that the coupling of the scalar field to massive neutrino matter can give rise to exit from the scaling regime to cosmic acceleration at late times as massive neutrinos turn non-relativistic. The proposed model is shown to successfully describe the cosmic history from inflation to late time acceleration, with the evolution independent of initial conditions, along with the generation of baryon asymmetry during the post-inflationary era. A brief analysis of relic gravity waves produced in the scenario is presented.

baryon asymmetry , dark energy theory , inflation , primordial gravitational waves (theory)

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School Of Physics, Indian Institute Of Science Education And Research Thiruvananthapuram, Maruthamala PO, Vithura, Kerala, Thiruvananthapuram, 695551, India
Centre For Strings, Gravitation And Cosmology, Department Of Physics, Indian Institute Of Technology Madras, Chennai, 600036, India
Centre For Theoretical Physics, Jamia Millia Islamia, New Delhi, 110025, India
Centre For Cosmology And Science Popularization(CCSP), Sgt University, Gurugram, Delhi-NCR, 122505, India
Center For Theoretical Physics, Eurasian National University, Astana, 010008, Kazakhstan
Mathematical And Physical Sciences Division, School Of Arts And Sciences, Ahmedabad University, Ahmedabad, 380009, India
Dipartimento Di Fisica E Astronomia Galileo Galilei, Università Di Padova, Padova, 35131, Italy
Infn, Sezione Di Padova, Padova, 35131, Italy

School Of Physics
Centre For Strings
Centre For Theoretical Physics
Centre For Cosmology And Science Popularization(CCSP)
Center For Theoretical Physics
Mathematical And Physical Sciences Division
Dipartimento Di Fisica E Astronomia Galileo Galilei
Infn

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