Browsing Astronomy and Astrophysics by Title
Now showing items 11-30 of 195
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Black-hole entropy from supergravity superstrata states
(2014-10-24) -
Black-hole lattices as cosmological models
(2018-09-06) -
CARMENES Instrument Overview
(2014) -
Codimension-2 solutions in five-dimensional supergravity
(2015-10-02) -
Compact conformal manifolds
(2015-01-21) -
A conjectured bound on accidental symmetries
(2012-01) -
Constraints on the Variation of G from Primordial Nucleosynthesis
We study here the effect of a varying G on the evolution of the early Universe and, in particular, on primordial nucleosynthesis. This variation of G is modelled using the Brans-Dicke theory as well as a more general class ... -
Cosmologies with Energy Exchange
We provide a simple mathematical description of the exchange of energy between two fluids in an expanding Friedmann universe with zero spatial curvature. The evolution can be reduced to a single non-linear differential ... -
Cosmology Without Averaging
We construct cosmological models consisting of large numbers of identical, regularly spaced masses. These models do not rely on any averaging procedures, or on the existence of a global Friedmann-Robertson-Walker (FRW) ...