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pro vyhledávání: '"Giugno, Andrea"'
Autor:
Giugno, Andrea <1986>
Quantum physics lends a view of space-time geometry as an emergent structure that shows classical features only at some observational level. The space-time manifold can be viewed as a purely theoretical arena, where quantum states and observables are
Externí odkaz:
http://amsdottorato.unibo.it/7265/
Akademický článek
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Publikováno v:
JCAP 1906 (2019) no.06, 005
It is shown that the recent corpuscular description of gravity generically excludes de Sitter spacetime in any semiclassical version of f(R) gravity. A phantom phenomenology of the cosmic dynamics is also naturally excluded.
Comment: 9 pages, no
Comment: 9 pages, no
Externí odkaz:
http://arxiv.org/abs/1903.07685
Autor:
Giugno, Andrea, Giusti, Andrea
The aim of this paper is to provide a more precise description of the paradigm of corpuscular slow-roll inflation, which was previously introduced by Casadio et al. in [1]. Specifically, we start by expanding the Starobinsky theory on a curved backgr
Externí odkaz:
http://arxiv.org/abs/1806.11168
The Horizon Quantum Mechanics is an approach that allows one to analyse the gravitational radius of spherically symmetric systems and compute the probability that a given quantum state is a black hole. We first review the (global) formalism and show
Externí odkaz:
http://arxiv.org/abs/1712.02376
We study the extent of quantum gravitational effects in the internal region of non-singular, Hayward-like solutions of Einstein's field equations according to the formalism known as Horizon Quantum Mechanics. We grant a microscopic description to the
Externí odkaz:
http://arxiv.org/abs/1711.06209
Autor:
Giugno, Andrea
We discuss an effective theory for the quantum static gravitational potential in spherical symmetry up to the first post-Newtonian correction. We build a suitable Lagrangian from the weak field limit of the Einstein-Hilbert action coupled to pressure
Externí odkaz:
http://arxiv.org/abs/1710.04487
Publikováno v:
Phys. Rev. D 97, 024041 (2018)
We show that a corpuscular description of gravity can lead to an inflationary scenario similar to Starobinsky's model without requiring the introduction of the inflaton field. All relevant properties are determined by the number of gravitons in the c
Externí odkaz:
http://arxiv.org/abs/1708.09736
Publikováno v:
Phys. Rev. D 96, 044010 (2017)
We study an effective quantum description of the static gravitational potential for spherically symmetric systems up to the first post-Newtonian order. We start by obtaining a Lagrangian for the gravitational potential coupled to a static matter sour
Externí odkaz:
http://arxiv.org/abs/1702.05918
The Horizon Quantum Mechanics is an approach that was previously introduced in order to analyse the gravitational radius of spherically symmetric systems and compute the probability that a given quantum state is a black hole. In this work, we first e
Externí odkaz:
http://arxiv.org/abs/1701.05778