- Istituto Nazionale di Fisica Nucleare, Sezione di FirenzeIT2.2k papers
- Centre National de la Recherche ScientifiqueFR1.3k papers
- University of BolognaIT1k papers
- University of PaduaIT985 papers
- European Organization for Nuclear ResearchCH983 papers
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- Massachusetts Institute of TechnologyUS940 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di Roma IIT927 papers
- University of PisaIT925 papers
- Scuola Normale SuperioreIT886 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di BolognaIT873 papers
- Rutherford Appleton LaboratoryGB863 papers
225 papers · 1 filter
A Rigorous Framework for Specification, Analysis and Enforcement of Access Control Policies
Andrea Margheri, Massimiliano Masi, Rosario Pugliese +1
Access control systems are widely used means for the protection of computing systems. They are defined in terms of access control policies regulating the accesses to system resourc…
Quantifying the degree of average contraction of Collatz orbits
Timoteo Carletti, Duccio Fanelli
We here elaborate on a quantitative argument to support the validity of the Collatz conjecture, also known as the (3x + 1) or Syracuse conjecture. The analysis is structured as fol…
Radiation enhancement and "temperature" in the collapse regime of gravitational scattering
Marcello Ciafaloni, Dimitri Colferai
We generalize the semiclassical treatment of graviton radiation to gravitational scattering at very large energies and finite scattering angles , so as to ap…
Theta dependence in Holographic QCD
Lorenzo Bartolini, Francesco Bigazzi, Stefano Bolognesi +2
We study the effects of the CP-breaking topological -term in the large QCD model by Witten, Sakai and Sugimoto with degenerate light flavors. We first compute the gr…
Three-dimensional Topological Insulators and Bosonization
Andrea Cappelli, Enrico Randellini, Jacopo Sisti
Massless excitations at the surface of three-dimensional time-reversal invariant topological insulators possess both fermionic and bosonic descriptions, originating from band theor…
The WISSH Quasars Project I. Powerful ionised outflows in hyper-luminous quasars
M. Bischetti, E. Piconcelli, G. Vietri +19
Models and observations suggest that both power and effects of AGN feedback should be maximised in hyper-luminous (L_Bol>10^47 erg/s) quasars, i.e. objects at the brightest end of…