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Inflationary spectra, decoherence, and two-mode coherent states

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arxiv astro-ph/0404021 v1 pith:QMGWMAQ6 submitted 2004-04-01 astro-ph

classification astro-ph
keywords bounddistributionentropystatescoherentdecoherenceinflationarylower
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We re-examine the question of the entropy stored in the distribution of primordial density fluctuations. To this end we make use of two-mode coherent states. These states incorporate the isotropy of the distribution as well as the temporal coherence and the semi-classical character of highly amplified modes. They also provide a lower bound for the entropy if, as one expects, decoherence processes erase the squeezing which originally characterized the distribution in inflationary models. This lower bound is one half the maximal (thermal) value. By considering backreaction effects, we also provide an upper bound for this entropy at the onset of the adiabatic era.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. A Landscape of Cosmological Decoherence

    gr-qc 2026-06 unverdicted novelty 6.0 of 10

    Requiring decohered cosmological perturbations to admit a classical P-function forces their momentum variance above the vacuum value, and demanding a linear gravitational potential at reheating bounds that variance by...

  2. On the Quantum-to-Classical Transition of Primordial Perturbations

    gr-qc 2019-06 unverdicted novelty 3.0 of 10

    A dissertation that introduces slow-roll inflation and perturbations, critiques squeezing and decoherence formalisms, and investigates the pilot-wave approach to the quantum-to-classical transition with numerical illu...

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