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Unified description of the dynamics of quintessential scalar fields
L. Arturo Urena-Lopez
Using the dynamical system approach, we describe the general dynamics of cosmological scalar fields in terms of critical points and heteroclinic lines. It is found that critical po…
Black holes and the absorption rate of cosmological scalar fields
L. Arturo Urena-Lopez, Lizbeth M. Fernandez
We study the absorption of a massless scalar field by a static black hole. Using the continuity equation that arises from the Klein-Gordon equation, it is possible to define a norm…
Oscillatons
Susana Valdez-Alvarado, Ricardo Becerril, L. Arturo Urena-Lopez
We solve numerically the Einstein-Klein-Gordon system with spherical symmetry, for a massive real scalar field endowed with a quartic self-interaction potential, and obtain the so-…
Unification models with reheating via primordial black holes
J. C. Hidalgo, L. Arturo Urena-Lopez, Andrew R. Liddle
We study the possibility of reheating the universe through the evaporation of primordial black holes created at the end of inflation. This is shown to allow for the unification of…