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Quantum-to-classical transition of primordial cosmological perturbations in de Broglie-Bohm quantum theory: the bouncing scenario
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In a previous work we have exhibited a clear description of the quantum-to-classical transition of cosmological quantum fluctuations in the inflationary scenario using the de Broglie-Bohm quantum theory. These fluctuations are believed to seed the small inhomogeneities, which are then responsible for the formation of large scale structures. In this work we show that using the de Broglie-Bohm theory it is also possible to describe the quantum-to-classical transition of primordial perturbations which takes place around a bouncing phase, even if the latter is caused by quantum effects due to the quantization of the background geometry.
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Quantum cosmological perturbations in bouncing models with mimetic dark matter
Mimetic dark matter bouncing cosmologies can generate scale-invariant, slightly red-tilted primordial fluctuations matching CMB observations when the bounce scale lies between 10^5 and 10^9 Planck lengths.
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