Analogue gravity is a research programme which investigates analogues of general
relativistic gravitational fields within other physical systems, typically but not exclusively …

All cosmological observations to date are consistent with adiabatic, Gaussian and nearly
scale invariant initial conditions. These findings provide strong evidence for a particular …

We study the implications of the recently proposed Trans-Planckian censorship conjecture
(TCC) for early Universe cosmology and in particular inflationary cosmology. The TCC leads …

We review the status of bouncing cosmologies as alternatives to cosmological inflation for
providing a description of the very early universe, and a source for the cosmological …

We perform a general study of primordial scalar non-Gaussianities in single-field inflationary
models in Einstein gravity. We consider models where the inflaton Lagrangian is an arbitrary …

We determine the energy eigenvalues and eigenfunctions of the harmonic oscillator where
the coordinates and momenta are assumed to obey the modified commutation relations [xi …

We investigate the effect of the minimal length uncertainty relation, motivated by perturbative
string theory, on the density of states in momentum space. The relation is implemented …

In this paper we consider the influence of trans-Planckian physics on the CMBR anisotropies
produced by inflation. We consider a simple toy model that allows for analytic calculations …

String theory suggests the existence of a minimum length scale. An exciting quantum
mechanical implication of this feature is a modification of the uncertainty principle. In contrast …

We show that a string-inspired Planck scale modification of general relativity can have
observable cosmological effects. Specifically, we present a complete analysis of the …