Blar i Department of Mathematics and Natural Sciences på emneord "cosmology"
Viser treff 1-4 av 4
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Discriminating the Weyl type in higher dimensions using scalar curvature invariants
(Journal article; Peer reviewed, 2011)We consider higher dimensional Lorentzian spacetimes which are currently of interest in theoretical physics. It is possible to algebraically classify any tensor in a Lorentzian spacetime of arbitrary dimensions using ... -
Inflation with stable anisotropic hair
(Journal article; Peer reviewed, 2011)Recently an inflationary model with a vector field coupled to the inflaton was proposed and the phenomenology studied for the Bianchi type I spacetime. It was found that the model demonstrates a counter-example to the ... -
Pseudo-Riemannian VSI spaces II
(Journal article; Peer reviewed, 2012)In this paper we consider pseudo-Riemannian spaces of arbitrary signature for which all of the polynomial curvature invariants vanish (VSI spaces). Using an algebraic classification of pseudo-Riemannian spaces in terms of ... -
Quantum correction to inflation and curvature perturbation
(Masteroppgave/UIS-TN-IMN/2015;, Master thesis, 2015-06)Inflation is a sudden and near exponential expansion of space in early universe. Infla- tion solved flatness problem, horizon problem and monopole problem that persisted in standard big bang cosmology. It was not only useful ...