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17 papers · 1 filter
Distances in Finite Spaces from Noncommutative Geometry
B. Iochum, T. Krajewski, P. Martinetti
Following the general principles of noncommutative geometry, it is possible to define a metric on the space of pure states of the noncommutative algebra generated by the coordinate…
Probing BFKL Dynamics in the Dijet Cross Section at Large Rapidity Intervals in ppbar Collisions at sqrt{s}=1800 and 630 GeV
D0 Collaboration, B. Abbott
Inclusive dijet production at large pseudorapidity intervals (delta_eta) between the two jets has been suggested as a regime for observing BFKL dynamics. We have measured the dijet…
Dynamical phases and hysteresis in a simple one-lane traffic model
M. Antoni, R. Cafiero
A two parameter model for single lane car-following is introduced and its equilibrium and non-equilibrium properties are studied. Despite its simplicity, this model exhibits a rich…
Background Light in Potential Sites for the ANTARES Undersea Neutrino Telescope
ANTARES collaboration
The ANTARES collaboration has performed a series of {\em in situ} measurements to study the background light for a planned undersea neutrino telescope. Such background can be cause…
Single top production at the LHC as a probe of R parity violation
P. Chiappetta, A. Deandrea, E. Nagy +3
We investigate the potential of the LHC to probe the R parity violating couplings involving the third generation by considering single top production. This study is based on partic…
Biquadratic interactions and spin-Peierls transition in the spin 1 chain LiVGe2O6
P. Millet, F. Mila, F. C. Zhang +5
The magnetic susceptibility of a new one-dimensional, S=1 system, the vanadium oxide LiVGe2O6, has been measured. Contrary to previous S=1 chains, it exhibits an abrupt drop at 22…
Magnetic properties of the three-dimensional Hubbard model at half filling
A. -M. Dare, G. Albinet
We study the magnetic properties of the 3d Hubbard model at half-filling in the TPSC formalism, previously developed for the 2d model. We focus on the Néel transition approached fr…
Continuous quantum measurement of a double dot
Alexander N. Korotkov
We consider the continuous measurement of a double quantum dot by a weakly coupled detector (tunnel point contact nearby). While the conventional approach describes the gradual sys…
Dynamics and statistics of simple models with infinite-range attractive interaction
Mickael Antoni, Stefano Ruffo, Alessandro Torcini
In this paper we review a series of results obtained for 1D and 2D simple N-body dynamical models with infinite-range attractive interactions and without short distance singulariti…
Orderings of mapping class groups after Thurston
Hamish Short, Bert Wiest
We are concerned with mapping class groups of surfaces with nonempty boundary. We present a very natural method, due to Thurston, of finding many different left orderings of such g…
Renormalization Group Transformations under strong mixing conditions: gibbsianess and convergence of renormalized interactions
L. Bertini, E. N. M. Cirillo, E. Olivieri
In this paper we study a renormalization-group map: the block averaging transformation applied to Gibbs measures relative to a class of finite range lattice gases, when suitable st…
The b-bbar Production Cross Section and Angular Correlations in p-pbar Collisions at sqrt(s) = 1.8 TeV
D0 Collaboration, B. Abbott
We present measurements of the b-bbar production cross section and angular correlations using the D0 detector at the Fermilab Tevatron p-pbar Collider operating at sqrt(s) = 1.8 Te…
DOF phase separation of the Lennard-Jones fcc(111) surface
C. S. Jayanthi, Franck Celestini, Furio Ercolessi +1
Recent lattice model calculations have suggested that a full-layered crystal surface may undergo, under canonical (particle-conserving) conditions, a preroughening-driven two-dimen…
Weak Convergence and Deterministic Approach to Turbulent Diffusion
Claude Bardos, Jean Michel Ghidaglia, Spyridon Kamvissis
The purpose of this contribution is to show that some of the basic ideas of turbulence can be addressed in a deterministic setting instead of introducing random realizations of the…
Magnetic clusters formation in Li_{1-x}Ni_{1+x}O_2 compounds : experiments and numerical simulations
D. Mertz, Y. Ksari, F. Celestini +3
The magnetic properties of Li_{1-x}Ni_{1+x}O_2 compounds with x ranging between 0.02 and 0.2 are investigated. Magnetization and ac susceptibility measured at temperatures between…
Tests of the Equivalence Principle with Neutral Kaons
CPLEAR Collaboration, J. Ellis, N. E. Mavromatos +1
We test the Principle of Equivalence for particles and antiparticles, using CPLEAR data on tagged K0 and K0bar decays into pi^+ pi^-. For the first time, we search for possible ann…
High P_T Leptons and W Production at HERA
C. Diaconu, J. Kalinowski, T. Matsushita +2
Details are given of the observation by H1 of events containing high P_T leptons in addition to large missing P_T. A closely related ZEUS analysis, including a preliminary measurem…