30 citations · 64 across the 11 of their papers we have counts for
11 papers · 1 filter
Spin-network states for the Bianchi I and IX cosmological models from quantum constrained symmetries
Matteo Bruno, Giovanni Montani, Edoardo Maria Panno
In this work, we implement at the quantum level the gauge-fixing conditions that relate the homogeneous SU(2) gauge theory of Ashtekar variables, describing the classical cosmologi…
Quantum Big Bounce in Wheeler-DeWitt scattering theory: Ekpyrotic and LQC-like transitions
S. Lo Franco, G. Montani
We present a rigorous description of the quantum dynamics of the closed isotropic Universe in the presence of an ekpyrotic-like scalar field, expressed in terms of relativistic qua…
Big-Bounce in Quantum f(R)-Cosmology: Polymer Dynamics with Internal Time
M. L. Limongi, S. Lo Franco, G. Montani +1
We construct the Hamiltonian formulation of the isotropic Universe in a generic metric f(R)-theory in the Jordan frame. We canonically quantize the Universe volume via a polymer fo…
Is the BKL map an intrinsic feature of the Quantum Mixmaster Universe?
S. Lo Franco, G. Montani
We study the quantum Mixmaster dynamics by constructing the corresponding Wheeler-DeWitt equation as a relativistic quantum theory in a pseudo-Riemannian Mini-superspace. The trans…
Running Einstein Constant and a Possible Vacuum State of the Universe
Giovanni Montani, Giulia Maniccia, Elisa Fazzari +1
We propose a revised formulation of General Relativity for cosmological settings, in which the Einstein constant varies with the energy density of the Universe. We demonstrate that…
Dynamics of the Mixmaster Universe in a non-commutative Generalized Uncertainty Principle framework
Sebastiano Segreto, Giovanni Montani
In this work, we examine the dynamical aspects of the cosmological Mixmaster model within the framework of non-commutative generalized uncertainty principle (GUP) theories. The the…
Analyzing the influence of graviton fluctuations on the inflationary spectrum with a Kuchař-Torre clock
Giulia Maniccia, Giovanni Montani, Marco Tosoni
This paper focuses on the search for a coherent and consistent formulation to describe quantum gravity corrections to Quantum Field Theory. We implement two fundamental ingredients…
Quantum Gravity Corrections to the inflationary spectrum in a Bohmian approach
Giulia Maniccia, Giovanni Montani
A precise interpretation of the Universe wave function is forbidden in the spirit of the Copenhagen School since a precise notion of measure operation cannot be satisfactorily defi…
Quantum Big-Bounce as a phenomenology of RQM in the Mini-superspace
S. Lo Franco, G. Montani
We investigate the emergence of a quantum Big-Bounce in the context of an isotropic Universe, filled by a self-interacting scalar field, which plays the role of a physical clock. T…
n-dimensional non-commutative GUP quantization and application to the Bianchi I model
Sebastiano Segreto, Giovanni Montani
We analyse a n-dimensional Generalized Uncertainty Principle (GUP) quantization framework, characterized by a non-commutative nature of the configurational variables. First, we ide…
Quasi-Isotropization of the Inhomogeneous Mixmaster Universe Induced by an Inflationary Process
A. A. Kirillov, G. Montani
We derive a ``generic'' inhomogeneous ``bridge'' solution for a cosmological model in the presence of a real self-interacting scalar field. This solution connects a Kasner-like reg…