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NUCLEAR PHYSICS B
Volume 585, Issue 3, Pages 666-714Publisher
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DOI: 10.1016/S0550-3213(00)00411-9
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Warm inflation is examined in a multi-field model. Solutions are obtained for expansion e-folds and scalar density perturbations. Nonequilibrium dynamics is restricted to a regime that is displaced only slightly from thermal equilibrium and in which all macroscopic motion is adiabatic. In such a regime. nonequilibrium dynamics is well defined provided macroscopic motions that displace the thermal equilibrium state occur sufficiently slow. The solution has adjustable parameters that permit observational consistency with respect to expansion e-folds and density perturbations in the full adiabatic regime, thus insuring a valid solution regime. For particle physics, the model is nonstandard since it requires a large number of fields, > 10(4).. A particle physics/string interpretation of the model and solutions is discussed. which can accommodate the large held number requirement. (C) 2000 Elsevier Science B.V. All rights reserved.
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