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20022009
most citedObservation of an anomalous positron abundance in the cosmic radiation

2.2k citations

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25 papers · 1 filter

gr-qc200910 cited

Averaging inhomogeneities in scalar-tensor cosmology

Vincenzo Vitagliano, Stefano Liberati, Valerio Faraoni

The backreaction of inhomogeneities on the cosmic dynamics is studied in the context of scalar-tensor gravity. Due to terms of indefinite sign in the non-canonical effective energy…

gr-qc2008117 cited

On the ergoregion instability in rotating gravastars

Cecilia B. M. H. Chirenti, Luciano Rezzolla

The ergoregion instability is known to affect very compact objects that rotate very rapidly and do not possess a horizon. We present here a detailed analysis on the relevance of th…

gr-qc200850 cited

Gravitational dynamics in Bose Einstein condensates

Florian Girelli, Stefano Liberati, Lorenzo Sindoni

Analogue models for gravity intend to provide a framework where matter and gravity, as well as their intertwined dynamics, emerge from degrees of freedom that have a priori nothing…

gr-qc200852 cited

On the emergence of Lorentzian signature and scalar gravity

Florian Girelli, Stefano Liberati, Lorenzo Sindoni

In recent years, a growing momentum has been gained by the emergent gravity framework. Within the latter, the very concepts of geometry and gravitational interaction are not seen a…

gr-qc2008378 cited

Accurate evolutions of inspiralling neutron-star binaries: prompt and delayed collapse to black hole

Luca Baiotti, Bruno Giacomazzo, Luciano Rezzolla

Binary neutron-star (BNS) systems represent primary sources for the gravitational-wave (GW) detectors. We present a systematic investigation in full GR of the dynamics and GW emiss…

gr-qc2007212 cited

Fate of gravitational collapse in semiclassical gravity

Carlos Barcelo, Stefano Liberati, Sebastiano Sonego +1

While the outcome of gravitational collapse in classical general relativity is unquestionably a black hole, up to now no full and complete semiclassical description of black hole f…