37 citations · 42 across the 3 of their papers we have counts for
7 papers · 1 filter
Bouncing Bianchi Models with Deformed Commutation Relations
Gabriele Barca, Steffen Gielen
We study the anisotropic Bianchi I and Bianchi II models in vacuum in the framework of deformed commutation relations (DCRs). Working in a parametrisation of the spatial metric by…
Fate of Mixmaster Chaos in a Deformed Algebra framework
G. Barca, E. Giovannetti
We analyze the anisotropic Bianchi models, and in particular the Bianchi Type IX known as the Mixmaster universe, where the Misner anisotropic variables obey Deformed Commutation R…
Quantum Isotropic Universe in RQM Analogy: the Cosmological Horizon
Gabriele Barca, Luisa Boglioni, Giovanni Montani
We investigate the quantum dynamics of the isotropic Universe in the presence of a free massless scalar field, playing the role of a physical clock. The Hilbert space is constructe…
Non-Singular Gravitational Collapse through Modified Heisenberg Algebra
Gabriele Barca, Giovanni Montani
We study the effects of cut-off physics, in the form of a modified algebra inspired by Polymer Quantum Mechanics and by the Generalized Uncertainty Principle representation, on the…
An Overview on the Nature of the Bounce in LQC and PQM
Gabriele Barca, Eleonora Giovannetti, Giovanni Montani
We present a review on basic aspects of quantum cosmology in the presence of cut-off physics. We first analyze how the Wheeler-DeWitt equation in a pure metric approach describes t…
Semiclassical and Quantum Polymer Effects in the Flat Isotropic Universe
Gabriele Barca, Paolo Di Antonio, Giovanni Montani +1
We analyze some relevant semiclassical and quantum features of the implementation of Polymer Quantum Mechanics to the phenomenology of the flat isotropic Universe. We firstly inves…