37 citations · 60 across the 5 of their papers we have counts for
5 papers
Ever-expanding, Isotropizing, Quadratic Cosmologies
Spiros Cotsakis, George Flessas, Peter Leach +1
We consider some aspects of the global evolution problem of Hamiltonian homogeneous, anisotropic cosmologies derived from a purely quadratic action functional of the scalar curvatu…
Variational Principles and Cosmological Models in Higher-Order Gravity
Laurent Querella
This dissertation investigates three main topics, all of which dealing with alternative, higher-order gravity theories in four dimensions. Firstly, we study the variational and con…
Kinematic cosmology in conformally flat spacetime
Laurent Querella
In a recent series of papers Endean examines the properties of spatially homogeneous and isotropic (FLRW) cosmological models filled with dust in the ``conformally flat spacetime p…
Hamiltonian Formulation and Exact Solutions of Bianchi type-I Model in Conformal Gravity
Laurent Querella
We develop a Hamiltonian formulation of Bianchi type-I cosmological model in conformal gravity, i.e. the theory described by a Lagrangian which involves the quadratic curvature inv…
Hamiltonian Formulation of Bianchi Cosmological Models in Quadratic Theories of Gravity
Jacques Demaret, Laurent Querella
We use Boulware's Hamiltonian formalism of quadratic gravity theories in order to analyze the classical behaviour of Bianchi cosmological models for a Lagrangian density containing…