Relaxing the TCC bound on inflationary cosmology?

Comments on Inflationary Cosmology

In this talk we will discuss three different issues. First of all, there exist several proposals how to solve cosmological problems by adiabatic expansion of the Universe of a specific type, without any use of inflation. We explain why these models do not solve the flatness/entropy problem. On the other hand there exist some claims that inflation also does not solve the flatness problem. We sho...

Lectures on Inflationary Cosmology

An Exposition on Inflationary Cosmology

This paper is intended to offer a pedagogical treatment of inflationary cosmology, which is accessible to undergraduates. In recent years, inflation has become accepted as a standard scenario making predictions that are testable by observations of the cosmic background. It is therefore manifest that anyone wishing to pursue the study of cosmology and large-scale structure should have this scena...

Implications of the Curvaton on Inflationary Cosmology

We study implications of the curvaton, a late-decaying light scalar field, on inflationary cosmology, paying particular attentions to modifications of observable quantities such as the scalar spectral index of the primordial power spectrum and the tensor-to-scalar ratio. We consider this issue from a general viewpoint and discuss how the observable quantities are affected by the existence of th...

The Scalar-Tensor Inflationary Cosmology

In this paper the scalar-tensor theory of gravity is assumed to describe the evolution of the universe and the gravitational scalar φ is ascribed to play the role of inflaton. The theory is characterized by the specified coupling function ω(φ) and the cosmological function λ(φ). The function λ(φ) is nearly constant for 0 < φ < 0.1 and λ(1) = 0. The functions λ(φ) and ω(φ) provide a double-well ...