Friction in inflaton equations of motion

Abstract

The possibility of a friction term in the equation of motion for a scalar field is investigated in non-equilibrium field theory. The results obtained differ greatly from existing estimates based on linear response theory, and suggest that dissipation is not well represented by a term of the form $\eta \dot{\varphi }$.

4 pages, 2 figures, RevTex4. An obscurity in the original version has been clarified

References in corpus (2)

• Nonequilibrium time evolution of the spectral function in quantum field theory
• Affinity for Scalar Fields to Dissipate

Cited by in corpus (16)

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• Thermal Effects on Pure and Hybrid Inflation
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• Cosmological Constraints on Dissipative Models of Inflation
• Thermal effects on slow-roll dynamics
• Spotted Inflation
• Dissipation in equations of motion of scalar fields
• Entropy production and curvature perturbation from dissipative curvatons
• Inflationary cosmology, a dissipative quantum field theory process
• Numerical investigation of friction in inflaton equations of motion