scholarly journals Dirac-Born-Infeld warm inflation realization in the strong dissipation regime

2021 ◽  
Vol 104 (4) ◽  
Author(s):  
Meysam Motaharfar ◽  
Rudnei O. Ramos
Keyword(s):  
Warm Inflation

scholarly journals Dynamics of polynomial Chaplygin gas warm inflation

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

Is warm inflation quasi-stable?

2021 ◽  
pp. 100938
Author(s):  
Akash Bose ◽  
Subenoy Chakraborty
Keyword(s):  
Warm Inflation

scholarly journals Warm inflation in the DGP brane-world model

2007 ◽  
Vol 653 (2-4) ◽  
pp. 122-128 ◽  
Author(s):  
Sergio del Campo ◽  
Ramón Herrera
Keyword(s):  
Brane World ◽  
World Model ◽  
Warm Inflation

scholarly journals Semi-Classical Einstein Equations: Descend to the Ground State

Universe ◽  
2020 ◽  
Vol 6 (6) ◽  
pp. 74
Author(s):  
Zbigniew Haba
Keyword(s):  
Ground State ◽  
Energy Momentum Tensor ◽  
Local Maximum ◽  
Momentum Tensor ◽  
Einstein Equations ◽  
Thermal Dissipation ◽  
Stationary Probability Distribution ◽  
Expectation Value ◽  
Warm Inflation ◽  
The Right

The time-dependent cosmological term arises from the energy-momentum tensor calculated in a state different from the ground state. We discuss the expectation value of the energy-momentum tensor on the right hand side of Einstein equations in various (approximate) quantum pure as well as mixed states. We apply the classical slow-roll field evolution as well as the Starobinsky and warm inflation stochastic equations in order to calculate the expectation value. We show that, in the state concentrated at the local maximum of the double-well potential, the expectation value is decreasing exponentially. We confirm the descent of the expectation value in the stochastic inflation model. We calculate the cosmological constant Λ at large time as the expectation value of the energy density with respect to the stationary probability distribution. We show that Λ ≃ γ 4 3 where γ is the thermal dissipation rate.

scholarly journals k-essence for warm inflation on the brane

2017 ◽  
Vol 14 (06) ◽  
pp. 1750093 ◽  
Author(s):  
Lorenzo Sebastiani ◽  
Ratbay Myrzakulov
Keyword(s):  
Spectral Index ◽  
Power Law ◽  
General Class ◽  
Kinetic Term ◽  
Warm Inflation ◽  
Scalar Perturbations

In this paper, [Formula: see text]-inflation is analyzed in warm braneworld scenario. A general class of [Formula: see text]-essence models with power-law kinetic term is investigated and weak and strong dissipation regimes are studied. Scalar perturbations and spectral index are derived. The results are discussed and applied to specific examples.

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