198 citations
- University of ParmaIT7 papers
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- P.N. Lebedev Physical Institute of the Russian Academy of SciencesRU1 paper
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20 papers
A post-Keplerian parameter to test gravito-magnetic effects in binary pulsar systems
Matteo Luca Ruggiero, Angelo Tartaglia
We study the pulsar timing, focusing on the time delay induced by the gravitational field of the binary systems. In particular, we study the gravito-magnetic correction to the Shap…
L^p-spectral multipliers for the Hodge Laplacian acting on 1-forms on the Heisenberg group
Detlef Müller, Marco M. Peloso, Fulvio Ricci
We prove that, if Δ_1 is the Hodge Laplacian acting on differential 1-forms on the (2n+1)-dimensional Heisenberg group, and if m is a Mihlin-Hörmander multiplier on the positive ha…
Reducing the number of variables of a polynomial
Enrico Carlini
In this paper, we consider two basic questions about presenting a homogeneous polynomial f: how many variables are needed for presenting f? How can one find a presentation of f inv…
Fractional-filling Mott domains in two dimensional optical superlattices
Pierfrancesco Buonsante, Vittorio Penna, Alessandro Vezzani
Ultracold bosons in optical superlattices are expected to exhibit fractional-filling insulating phases for sufficiently large repulsive interactions. On strictly 1D systems, the ex…
Space-Charge-Limited Current Fluctuations in Organic Semiconductors
A. Carbone, B. K. Kotowska, D. Kotowski
Low-frequency current fluctuations are investigated over a bias range covering {\em ohmic}, {\em trap-filling} and {\em space-charge-limited current} regimes in polycrystalline pol…
Cell strong coupling perturbative approach to the phase diagram of ultracold bosons in optical superlattices
Pierfrancesco Buonsante, Alessandro Vezzani
The phase diagram of ultracold bosons in realistic optical superlattices is addressed via second-order {\it cell} strong coupling perturbative expansions for the Bose-Hubbard model…