198 citations · 1k across the 36 of their papers we have counts for
36 papers
From the string vacuum to FLRW or de Sitter via corrections
P. Conzinu, G. Fanizza, M. Gasperini +3
We first make more precise a recent "Hamiltonian" reformulation of the Hohm-Zwiebach approach to the tree-level, -invariant string cosmology equations at all orders in the…
Comment on "A fractal LTB model cannot explain Dark Energy''
Leonardo Cosmai, Giuseppe Fanizza, Francesco Sylos Labini +2
We reply to the criticisms moved in [1] against our results presented in [2]. In particular, we show that our fractal model has none of the problems claimed in [1]. The latters can…
Gravitational Wave luminosity distance in viscous cosmological models
Giuseppe Fanizza, Eliseo Pavone, Luigi Tedesco
We study the so-called Gravitational Wave luminosity distance-redshift relation during cosmological eras driven by non-perfect fluids. In particular, we show that t…
Measurement of fundamental physical quantities in the framework of the Lab2Go project
F. Casaburo, N. Marcelli, M. Sorbara +23
To establish a closer contact between school and experimental sciences, Sapienza Università di Roma and the Istituto Nazionale di Fisica Nucleare (INFN) launched the Lab2Go project…
Linearized propagation equations for metric fluctuations in a general (non-vacuum) background geometry
G. Fanizza, M. Gasperini, E. Pavone +1
The linearized dynamical equation for metric perturbations in a fully general, non-vacuum, background geometry is obtained from the Hamilton variational principle applied to the ac…
Comparing the luminosity distance for gravitational waves and electromagnetic signals in a simple model of quadratic gravity
G. Fanizza, G. Franchini, M. Gasperini +1
We compute the modified friction coefficient controlling the propagation of tensor metric perturbations in the context of a generalized cosmological scenario based on a theory of g…