Friction in inflaton equations of motion
classification
✦ hep-ph
astro-phgr-qchep-th
keywords
fieldfrictionmotiontermtheorydifferdissipationequation
read the original 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 $\eta\dot{\phi}$.
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