30 citations · 64 across the 11 of their papers we have counts for
12 papers
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…
Generalized Uncertainty Principle theories and their classical interpretation
Matteo Bruno, Sebastiano Segreto, Giovanni Montani
In this work, we show that it is possible to define a classical system associated with a Generalized Uncertainty Principle (GUP) theory via the implementation of a consistent sympl…
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…