61 citations · 337 across the 28 of their papers we have counts for
4 papers · 1 filter
Dynamics of interacting monomial scalar field potentials and perfect fluids
Artur Alho, Vitor Bessa, Filipe C. Mena
Motivated by cosmological models of the early universe we analyse the dynamics of the Einstein equations with a minimally coupled scalar field with monomial potentials $V(ϕ)=\frac{…
Quintessence from a state space perspective
Artur Alho, Claes Uggla, John Wainwright
We use dynamical systems methods to study quintessence models in a spatially flat and isotropic spacetime with matter and a scalar field with potentials for which …
Compactness bounds in General Relativity
Artur Alho, José Natário, Paolo Pani +1
A foundational theorem due to Buchdahl states that, within General Relativity (GR), the maximum compactness of a static, spherically symmetric, perfec…
Cosmological global dynamical systems analysis
Artur Alho, Woei Chet Lim, Claes Uggla
We consider a dynamical systems formulation for models with an exponential scalar field and matter with a linear equation of state in a spatially flat and isotropic spacetime. In c…