37 citations · 147 across the 15 of their papers we have counts for
15 papers
QCD CP-violation scenario for a revised cosmological dynamics: analysis of the binned Pantheon Sample of Super Novae Ia
Giovanni Montani, Nakia Carlevaro, Maria Giovanna Dainotti +1
We investigate a modified cosmological dynamics in which the Universe is composed of baryonic matter and a complex (classical) scalar field. The phase component of this field is id…
Mixmaster chaos in a quantum scenario:a Deformed Algebra approach
Eleonora Giovannetti
In this work, we address the question about the fate of chaos in the Mixmaster model when we promote the system at a quantum level. We consider Deformed Commutation Relations for t…
The phenomenology of Quantum Bounce in the Klein-Gordon, Wheeler-DeWitt and Dirac formalisms
Eleonora Giovannetti
We investigate the different meanings that the concept of Quantum Bounce acquires in various formalisms. The original idea refers to the phenomenology that appears in the Klein-Gor…
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…
The role of spatial curvature in constraining the Universe anisotropies across a Big Bounce
Eleonora Giovannetti, Giovanni Montani
We study the implementation of Polymer Quantum Mechanics (PQM) to a system decomposed into a quasi-classical background and a small quantum subsystem, according to the original Vil…
Quantum Big Bounce of the isotropic Universe via a relational time
Eleonora Giovannetti, Fabio Maione, Giovanni Montani
We analyze the canonical quantum dynamics of the isotropic Universe in a metric approach by adopting a self-interacting scalar field as relational time. When the potential term is…
PQM and the GUP: Implications of Lattice Dynamics and Minimal Uncertainties in Quantum Mechanics and Cosmology
Gabriele Barca, Eleonora Giovannetti, Giovanni Montani
We compare two alternative representations of quantum mechanics: Polymer Quantum Mechanics (PQM), which presents features similar to Loop Quantum Gravity and Loop Quantum Cosmology…
Is Bianchi I a Bouncing Cosmology in the Wheeler-DeWitt picture?
Eleonora Giovannetti, Giovanni Montani
We provide a quantum picture for the emergence of a bouncing cosmology, according to the idea that a semiclassical behavior of the Universe towards the singularity is not available…
Comparison of the Semiclassical and Quantum Dynamics of the Bianchi I Cosmology in the Polymer and GUP Extended Paradigms
Gabriele Barca, Eleonora Giovannetti, Giovanni Montani
We compare in some detail Polymer Quantum Mechanics and the Generalized Uncertainty Principle approach to clarify to what extent we can treat them on the same footing. We show that…
Polymer Quantization of the Isotropic Universe: comparison with the Bounce of Loop Quantum Cosmology
Gabriele Barca, Eleonora Giovannetti, Federico Mandini +1
We implement Polymer Quantum Mechanics on the Hamiltonian formulation of the isotropic Universe in both the representations of the standard Ashtekar-Barbero-Immirzi connection and…
On the semiclassical and quantum picture of the Bianchi I polymer dynamics
Eleonora Giovannetti, Giovanni Montani, Silvia Schiattarella
We analyze the Bianchi I cosmology in the presence of a massless scalar field and describe its dynamics via a semiclassical and quantum polymer approach. We investigate the morphol…
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 features of the Bianchi I cosmology in the polymer representation
E. Giovannetti, G. Montani, S. Schiattarella
We analyze the Bianchi I cosmology in the presence of a massless scalar field and describe its dynamics via a semiclassical and quantum polymer approach. We study the morphology of…
Polymer dynamics of isotropic universe in Ashtekar and in volume variables
Eleonora Giovannetti, Gabriele Barca, Federico Mandini +1
We analyze the semiclassical and quantum polymer dynamics of the isotropic Universe in terms of both the standard Ashtekar-Barbero-Immirzi connection and its conjugate momentum and…
Polymer representation of the Bianchi IX Cosmology in the Misner variables
Eleonora Giovannetti, Giovanni Montani
We analyze the Bianchi IX Universe in the Polymer Quantum Mechanics framework by facing both semiclassical and purely quantum effects near the cosmological singularity. We adopt Mi…