منابع مشابه
Chaotic Dynamics and Two-Field Inflation
We demonstrate the existence of chaos in realistic models of two-field inflation. The chaotic motion takes place after the end of inflation, when the fields are free to oscillate and their motion is only lightly damped by the expansion of the universe. We then investigate whether the presence of chaos affects the predictions of two-field models, and show that chaos enhances the production of to...
متن کاملDynamics and perturbations in assisted chaotic inflation
It was recently pointed out by Liddle et al. [1] that, under certain circumstances, it is possible for a set of scalar fields to act cooperatively to drive a period of cosmological inflation, even if none of the individual fields are capable of so doing. Such behaviour is known as assisted inflation, and in Ref. [1] investigation was made of the case of multiple fields moving in exponential pot...
متن کاملChaotic Symmetry Breaking and Dissipative Two-Field Dynamics
The dynamical symmetry breaking in a two-field model is studied by numerically solving the coupled effective field equations. These are dissipative equations of motion that can exhibit strong chaotic dynamics. By choosing very general model parameters leading to symmetry breaking along one of the field directions, the symmetry broken vacua make the role of transitory strange attractors and the ...
متن کاملTesting two-field inflation
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. We derive accurate semianalytic formulas for the power spectra from two-field inflation assuming an arbitrary poten...
متن کاملChaotic inflation from a scalar field in non-classical states
We study chaotic inflation driven by a real, massive, homogeneous minimally coupled scalar field in a flat Robertson-Walker spacetime. The semiclassical limit for gravity is considered, whereas the scalar field is treated quantum mechanically by the technique of invariants in order to also investigate the dynamics of the system for non-classical states of the latter. An inflationary stage is fo...
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ژورنال
عنوان ژورنال: Classical and Quantum Gravity
سال: 1999
ISSN: 0264-9381,1361-6382
DOI: 10.1088/0264-9381/16/5/313