3 citations · 5 across the 8 of their papers we have counts for
8 papers
How much chaos can be generated by gravitational collapse before reaching the Planck scale?
David Brizuela, Sara F. Uria, Edward Wilson-Ewing
According to the Belinski-Khalatnikov-Lifshitz (BKL) conjecture the dynamics of general relativity near singularities is highly chaotic. However, since general relativity breaks do…
Asymptotics of Bianchi IX under the presence of matter: approximate Kasner map
David Brizuela, Sara F. Uria
The goal of this paper is to analyze the effects of the matter fields in the evolution of the Bianchi IX cosmology close to the singularity. Although the dynamics of this model is…
Analytic solutions for the Bianchi I universe coupled to several barotropic perfect fluids
David Brizuela, Sara F. Uria
We consider the Bianchi I geometry coupled to several species of comoving barotropic perfect fluids with a linear equation of state in the context of general relativity. The soluti…
Hybrid classical-quantum systems in terms of moments
David Brizuela, Sara F. Uria
We present a consistent formalism to describe the dynamics of hybrid systems with mixed classical and quantum degrees of freedom. The probability function of the system, which, in…
Reduction of primordial chaos by generic quantum effects
Martin Bojowald, David Brizuela, Paula Calizaya Cabrera +1
According to general relativity, the generic early-universe dynamics is chaotic. Various quantum-gravity effects have been suggested that may change this behavior in different ways…
The chaotic behavior of the Bianchi IX model under the influence of quantum effects
Martin Bojowald, David Brizuela, Paula Calizaya Cabrera +1
A quantum analysis of the vacuum Bianchi IX model is performed, focusing in particular on the chaotic nature of the system. The framework constructed here is general enough for the…
Semiclassical study of the Mixmaster model: the quantum Kasner map
David Brizuela, Sara F. Uria
According to the Belinski-Khalatnikov-Lifshitz conjecture, close to a spacelike singularity different spatial points decouple, and the dynamics can be described in terms of the Mix…
Quantum Kasner transition in a locally rotationally symmetric Bianchi II universe
Ana Alonso-Serrano, David Brizuela, Sara F. Uria
The Belinski-Khalatnikov-Lifshitz (BKL) conjecture predicts a chaotic alternation of Kasner epochs in the evolution of generic classical spacetimes towards a spacelike singularity.…