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We elaborate on the role of quantum statistics in twisted Poincaré invariant theories. It is shown that, in order to have twisted Poincaré group as the symmetry of a quantum theory, statistics must be twisted. It is also confirmed that the removal of UV-IR mixing (in the absence of gauge fields) in such theories is a natural consequence.
The Groenwald-Moyal plane is the algebra A θ (R d+1) of functions on R d+1 with the *-product as the multiplication law, and the commutator [ˆ x µ , ˆ x ν ] = iθ µν (µ, ν = 0, 1, ..., d) between the coordinate functions. Chaichian et al. [1] and Aschieri et al. [2] have proved that the Poincaré group acts as auto-morphisms on A θ (R d+1) if the coproduct is(More)
In this paper we study the structure of the Hilbert space for the recent noncommutative geometry models of gauge theories. We point out the presence of unphysical degrees of freedom similar to the ones appearing in lattice gauge theories (fermion doubling). We investigate the possibility of projecting out these states at the various levels in the(More)
The Groenewold-Moyal plane is the algebra A θ (R d+1) of functions on R d+1 with the *-product as the multiplication law, and the commutator [ˆ x µ , ˆ x ν ] = iθ µν (µ, ν = 0, 1, ..., d) between the coordinate functions. Chaichian et al. [1] and Aschieri et al. [2] have proved that the Poincaré group acts as automor-phisms on A θ (R d+1) if the coproduct(More)
The neutrino energy density of the Universe can be conveniently parametrized in terms of the so-called effective number of neutrinos, N eff ν. This parameter enters in several cosmological observables. In particular it is an important input in those numerical codes, like CMBFAST, which are used to study the Cosmic Microwave Background anisotropy spectrum.(More)
We have constructed and operated the ICARUS T600 liquid argon (LAr) time projection chamber (TPC). The ICARUS T600 detector is the largest LAr TPC ever built, with a size of about 500 tons of fully imaging mass. The design and assembly of the detector relied on industrial support and represents the applications of concepts matured in laboratory tests to the(More)
The Connes and Lott reformulation of the strong and electroweak model represents a promising application of noncommutative geometry. In this scheme the Higgs field naturally appears in the theory as a particular gauge boson, connected to the discrete internal space, and its quartic potential, fixed by the model, is not vanishing only when more than one(More)
Prostate and breast cancer are major causes of death worldwide, mainly due to patient relapse upon disease recurrence through formation of metastases. Chemokines are small proteins with crucial roles in the immune system, and their regulation is finely tuned in early inflammatory responses. They are key molecules during inflammatory processes, and many(More)
Electron recombination in liquid argon (LAr) is studied by means of charged particle tracks collected in various ICARUS liquid argon TPC prototypes. The dependence of the recombination on the particle stopping power has been fitted with a Birks functional dependence. The simulation of the process of electron recombination in Monte Carlo calculations is(More)
AIMS Bindarit is an original compound with peculiar anti-inflammatory activity due to a selective inhibition of a subfamily of inflammatory chemokines, including the monocyte chemotactic proteins MCP-1/CCL2, MCP-3/CCL7, and MCP-2/CCL8. In this study, we investigated the effect of bindarit on neointima formation using two animal models of arterial injury:(More)