scholarly journals Graceful exit problem in warm inflation

2021 ◽  
Vol 103 (12) ◽  
Author(s):  
Suratna Das ◽  
Rudnei O. Ramos
Keyword(s):  
2018 ◽  
Vol 168 ◽  
pp. 06004 ◽  
Author(s):  
Yongwan Gim ◽  
Wontae Kim

In this presentation, we are going to explain the thermodynamic origin of warm inflation scenarios by using the effetive Stefan-Boltzmann law. In the warm inflation scenarios, radiation always exists to avoid the graceful exit problem, for which the radiation energy density should be assumed to be finite at the starting point of the warm inflation. To find out the origin of the non-vanishing initial radiation energy density, we derive an effective Stefan-Boltzmann law by considering the non-vanishing trace of the total energy-momentum tensors. The effective Stefan-Boltzmann law successfully shows where the initial radiation energy density is thermodynamically originated from. And by using the above effective Stefan-Boltzmann law, we also study the cosmological scalar perturbation, and obtain the sufficient radiation energy density in order for GUT baryogenesis at the end of inflation. This proceeding is based on Ref. [1]


2007 ◽  
Vol 29 (4) ◽  
pp. 876-890 ◽  
Author(s):  
Michael Bleaney ◽  
Marco Gundermann

2017 ◽  
Vol 77 (11) ◽  
Author(s):  
Abdul Jawad ◽  
Shahid Chaudhary ◽  
Nelson Videla
Keyword(s):  

1997 ◽  
Vol 79 (17) ◽  
pp. 3109-3112 ◽  
Author(s):  
D. G. Luchinsky ◽  
R. S. Maier ◽  
R. Mannella ◽  
P. V. E. McClintock ◽  
D. L. Stein

2014 ◽  
Vol 8 (1) ◽  
pp. 73-97 ◽  
Author(s):  
John Connolly ◽  
Keyword(s):  

1994 ◽  
Vol 4 (4) ◽  
pp. 1188-1205 ◽  
Author(s):  
Fima C. Klebaner ◽  
Ofer Zeitouni

Sign in / Sign up

Export Citation Format

Share Document