Novel quantum initial conditions for inflation

Novel quantum initial conditions for inflation

We present a novel approach for setting initial conditions on the mode functions of the Mukhanov-Sasaki equation. These conditions are motivated by minimization of the renormalized stress-energy tensor and are valid for setting a vacuum state even in a context where the spacetime is changing rapidly...

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Veröffentlicht in:Physical review. D 2016-07, Vol.94 (2), Article 024041
Hauptverfasser: Handley, W. J., Lasenby, A. N., Hobson, M. P.
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Sprache:eng
Schlagworte:
Cosmology
Gravitation
Inflation
Initial conditions
Mathematical analysis
Optimization
Tensors
Universe
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creator Handley, W. J.
Lasenby, A. N.
Hobson, M. P.
description We present a novel approach for setting initial conditions on the mode functions of the Mukhanov-Sasaki equation. These conditions are motivated by minimization of the renormalized stress-energy tensor and are valid for setting a vacuum state even in a context where the spacetime is changing rapidly. Moreover, these alternative conditions are potentially observationally distinguishable. We apply this to the kinetically dominated universe and compare with the more traditional approach.
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source American Physical Society Journals
subjects Cosmology
Gravitation
Inflation
Initial conditions
Mathematical analysis
Optimization
Tensors
Universe
title Novel quantum initial conditions for inflation
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