3 citations · 7 across the 6 of their papers we have counts for
6 papers
Generalized relative locality and causal sets
Andrea Bevilacqua, Alice Boldrin
In this paper we introduce a new general framework for the study of phenomenological quantum gravity theories (PQG). The key idea is the introduction of two different types of spac…
Classical and quantum aspects of perturbations in Primordial Universe
Alice Boldrin
In this work, our aim is to obtain a Hamiltonian formulation suitable for canonical quantization. Moreover, we assume that the early Universe can be described with fewer initial sy…
Time problem in primordial perturbations
Alice Boldrin, Przemysław Małkiewicz, Patrick Peter
We study the non-unitary relation between quantum gravitational models defined using different internal times. We show that despite the non-unitarity, it is possible to provide a p…
The Gauge issue and the Hamiltonian theory of cosmological perturbations
Alice Boldrin
We present a general formalism for the Hamiltonian description of perturbation theory around any spatially homogeneous spacetime. We employ and refine the Dirac method for constrai…
Gauge-fixing and spacetime reconstruction in the Hamiltonian theory of cosmological perturbations
Alice Boldrin, Przemysław Małkiewicz
We develop a complete Hamiltonian approach to the theory of perturbations around any spatially homogeneous spacetime. We employ the Dirac method for constrained systems which is we…
Dirac procedure and the Hamiltonian formalism for cosmological perturbations in a Bianchi I universe
Alice Boldrin, Przemysław Małkiewicz
We apply the Dirac procedure for constrained systems to the Arnowitt-Deser-Misner formalism linearized around the Bianchi I universe. We discuss and employ basic concepts such as D…