Effects of the Generalized Uncertainty Principle on the Inflation Parameters

TL;DR

This paper explores how the generalized uncertainty principle influences inflationary parameters in early universe models, revealing modifications to spectral index, density fluctuations, and tensor-to-scalar ratio with potential observational implications.

Contribution

It introduces the effects of the generalized uncertainty principle into inflationary dynamics within standard and braneworld models, specifically analyzing the Randall-Sundrum II scenario.

Findings

Quantum gravitational effects cause the spectral index to deviate from scale invariance.

Density fluctuation amplitudes decrease with stronger quantum gravity corrections.

Tensor-to-scalar ratio increases due to quantum gravity effects.

Abstract

We investigate the effects of the generalized uncertainty principle on the inflationary dynamics of the early universe in both standard and braneworld viewpoint. We choose the Randall-Sundrum II model as our underlying braneworld scenario. We find that the quantum gravitational effects lead to a spectral index which is not scale invariant. Also, the amplitude of density fluctuations is reduced by increasing the strength of quantum gravitational corrections. However, the tensor-to-scalar ratio increases by incorporation of these quantum gravity effects. We outline possible manifestations of these quantum gravity effects in the recent and future observations.