output
19922026
researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions
Showing 2004 · gr-qcShow all

11 papers · 2 filters

gr-qc2004★ 13 cited

Cosmological dynamics in tomographic probability representation

V. I. Man'ko, G. Marmo, C. Stornaiolo

The probability representation for quantum states of the universe in which the states are described by a fair probability distribution instead of wave function (or density matrix)…

gr-qc2004★ 300 cited

Cosmological dynamics of R^n gravity

S. Carloni, P. K. S. Dunsby, S. Capozziello +1

A detailed analysis of dynamics of cosmological models based on gravity is presented. We show that the cosmological equations can be written as a first order autonomous sys…

gr-qc2004★ 62 cited

Status of VIRGO

A. Freise

The French-Italian interferometric gravitational wave detector VIRGO is currently being commissioned. Its principal instrument is a Michelson interferometer with 3 km long optical…

gr-qc2004★ 106 cited

Can higher order curvature theories explain rotation curves of galaxies?

S. Capozziello, V. F. Cardone, S. Carloni +1

Higher order curvature gravity has recently received a lot of attention due to the fact that it gives rise to cosmological models which seem capable of solving dark energy and quin…

gr-qc2004★ 4 cited

Mixmaster Chaoticity as Semiclassical Limit of the Canonical Quantum Dynamics

Giovanni Imponente, Giovanni Montani

Within a cosmological framework, we provide a Hamiltonian analysis of the Mixmaster Universe dynamics on the base of a standard Arnowitt-Deser-Misner approach, showing how the chao…

gr-qc2004★ 1 cited

Inhomogeneous de Sitter Solution with Scalar Field and Perturbations Spectrum

Giovanni Imponente, Giovanni Montani

We provide an inhomogeneous solution concerning the dynamics of a real self interacting scalar field minimally coupled to gravity in a region of the configuration space where it pe…

gr-qc2004★ 53 cited

Arnowitt-Deser-Misner gravity with variable G and Lambda and fixed point cosmologies from the renormalization group

Alfio Bonanno, Giampiero Esposito, Claudio Rubano

Models of gravity with variable G and Lambda have acquired greater relevance after the recent evidence in favour of the Einstein theory being nonperturbatively renormalizable in th…

gr-qc2004

Mixmaster Chaos via the Invariant Measure

Giovanni Imponente, Giovanni Montani

The chaoticity of the Mixmaster is discussed in the framework of Statistical Mechanics by using Misner--Chitre-like variables and an ADM reduction of its dynamics. We show that suc…

gr-qc2004

Pre-inflationary perturbations spectrum

Giovanni Imponente, Giovanni Montani

In the framework of a flat FLRW model we derive an inflationary regime in which the scalar field, laying on the plateau of its potential, admits a linear time dependence and remain…

gr-qc2004

Covariant Lyapunov Exponents for the Mixmaster

Giovanni Imponente, Giovanni Montani

The dynamics of the Mixmaster Universe is analized in a covariant picture via Misner--Chitre-like variables for an ADM Hamiltonian approach. The system outcomes as isomorphic to a…

gr-qc2004★ 2 cited

Bianchi IX Chaoticity: BKL Map and Continuous Flow

Giovanni Imponente, Giovanni Montani

We analyze the Bianchi IX dynamics (Mixmaster) in view of its stochastic properties; in the present paper we address either the original approach due to Belinski, Khalatnikov and L…