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2012

Spectator field dynamics in de Sitter and curvaton initial conditions

Enqvist, Kari, Lerner, Rose N., Taanila, Olli et al.

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We investigate the stochastic behaviour of long wavelength modes of light spectator scalar fields during inflation.

When starting from a classical field value, the probability distribution for the spectator both spreads out and moves towards an equilibrium distribution.
We study the timescales for a mixed quadratic and quartic potential.
The timescale of equilibration depends on the parameters of the model, and can be surprisingly large, even much more than thousands of e-folds.

Spectator field dynamics in de Sitter and curvaton initial conditions · Around

Built on

A. A. Starobinsky, Lect. Notes in Phys., v. 246, pp. 107-126 (1986)
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A. A. Starobinsky and J. Yokoyama, Phys. Rev. D 50
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K. Enqvist, M. S. Sloth, Nucl. Phys. B626
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Then

K. Enqvist and S. Nurmi, JCAP 0510
Original
2006
Later among the works it cites.
S. Dimopoulos, S. Kachru, J. McGreevy, J. G. Wacker, JCAP 0808
2008
Later among the works it cites.
For a recent review, see A. Mazumdar and J. Rocher, Phys. Rept. 497
Original
2011
Later among the works it cites.
Kari Enqvist, Daniel G. Figueroa, Gerasimos Rigopoulos, JCAP 1201 (2012) 053 [arXiv:1109.3024 [astro-ph.CO]]
Original
2012
Closest in time.

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