Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8203373 | Physics Letters A | 2018 | 4 Pages |
Abstract
In the framework of the single-field slow-roll inflation, we derive the Hamiltonian of the linear primordial scalar and tensor perturbations in the form of time-dependent harmonic oscillator Hamiltonians. We find the invariant operators of the resulting Hamiltonians and use their eigenstates to calculate the adiabatic Berry phase for sub-horizon modes in terms of the Lewis-Riesenfeld phase. We conclude by discussing the discrepancy in the results of Pal et al. (2013) [21] for these Berry phases, which is resolved to yield agreement with our results.
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Physical Sciences and Engineering
Physics and Astronomy
Physics and Astronomy (General)
Authors
Hamideh Balajany, Mohammad Mehrafarin,