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arXiv · 1605.02543

Local Scale Invariance and Inflation

Naveen K. Singh·Sukanta Panda
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Abstract

We study the inflation and the cosmological perturbations generated during the inflation in a local scale invariant model. The local scale invariant model introduces a vector field $S_μ$ in this theory. In this paper, for simplicity, we consider the temporal part of the vector field $S_t$. We show that the temporal part is associated with the slow roll parameter of scalar field. Due to local scale invariance, we have a gauge degree of freedom. In a particular gauge, we show that the local scale invariance provides sufficient number of e-foldings for the inflation. Finally, we estimate the power spectrum of scalar perturbation in terms of the parameters of the theory.

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Naveen K. Singh, Sukanta Panda. 2018-09-21. Local Scale Invariance and Inflation. https://doi.org/10.22606/jpp.2018.23001

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