Geometric Phase of Linear Cosmological Perturbations in Two-Field Inflation

被引：0
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作者：
Hamideh Balajany
Mohammad Mehrafarin
机构：
[1] Amirkabir University of Technology,Physics Department
来源：
Gravitation and Cosmology | 2019年 / 25卷
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摘要：
As a footprint of primordial perturbations in cosmological observations, the Berry phase of cosmological perturbations can serve to probe the cosmological inflation. Considering linear perturbations in two-field slow-roll inflation, we derive the Hamiltonians of the scalar and tensor Fourier modes in the form of time-dependent harmonic oscillator Hamiltonians. We find the invariant operators of the resulting Hamiltonians and use these invariants to calculate the Berry phase for sub-horizon scalar and tensor modes in the adiabatic limit.
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页码：184 / 189
页数：5
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