… the most general primordial cosmological perturbation in a … within the framework of linearized
perturbation theory. We present a … spatially but the net density perturbation vanishes. In the …

… produced by a spatially homogeneous and isotropic random process are assumed, the most
general perturbation of the five regular modes is completely described by the 55, symmetric …

… While this is indeed difficult for a general spacetime, we show that it is … the primordial, scale
invariant, power spectrum of perturbations, thus providing a holistic description of cosmology. …

… account of theoretical cosmology and perturbations in the early … to relate such observations
to primordial physical processes, par… General relativistic perturbations 8.1 Scalar, vector, and …

… -trivial evolution of the primordial perturbations through the epochs of horizon … cosmic
perturbations in that scenario. Namely, we apply to it the general treatment of cosmic perturbations …

… the requirement of observable cosmology. The efolding number N required is generally
determined by the evolution of standard cosmology after the UV regime ends. In general, for …

… to more general cosmologies with dynamical dark energy. … The general formulation of the
RG equations is given in section 4… a modification of the primordial power spectrum appearing in …

… Our aim here is to obtain general features that could emerge from an incomplete relaxation to
… For the primordial perturbations we may define two critical k-scales, kamp and kphase, that …

… polarisation, but primordial density perturbations do not result in B… When the scalar and tensor
primordial power spectra have … The general methodology is to solve the perturbed Einstein …

… about a homogeneous and isotropic background cosmology. … of primordial curvature and
isocurvature perturbations from … gauge problem, in general relativistic perturbation theory. It can …