Showing 1996Show all

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nucl-th1996★ 14 cited

Light-front CQM calculations of baryon electromagnetic form factors

F. Cardarelli, E. Pace, G. Salmé +1

The parameter-free predictions for the and electromagnetic transition form factors, obtained within our light-front constituent quark model us…

hep-ph1996★ 117 cited

Exploring the supersymmetric parameter space by direct search for WIMPs

A. Bottino, F. Donato, G. Mignola +3

It is shown that the new data of the DAMA/NaI detector, combined with recent calculations of nuclear structure functions, provide the most stringent upper bounds on the WIMP-nucleo…

math.CV1996

The Julia-Wolff-Caratheodory theorem in polydisks

Marco Abate

The classical Julia-Wolff-Caratheodory theorem gives a condition ensuring the existence of the non-tangential limit of both a bounded holomorphic function and its derivative at a g…

astro-ph1996★ 15 cited

Faint Blue Galaxies and Merging: the Evolution of the Luminosity Function

A. Cavaliere, N. Menci

We probe to what extent not only the counts of the faint blue galaxies and their redshift distribution but also their z-resolved luminosity functions can be explained in terms of b…

q-alg1996

Double-loop algebras and the Fock space

M. Varagnolo, E. Vasserot

The fermionic Fock space admits two different actions of the quantized enveloping algebra of $\hat\sln$> The first one is a q-deformation of the well-known level-one representation…

astro-ph1996★ 262 cited

Jets and accretion processes in Active Galactic Nuclei: further clues

Annalisa Celotti, Paolo Padovani, Gabriele Ghisellini

We present evidence in favour of a link between the luminosity radiatively dissipated in the central engine of radio-loud Active Galactic Nuclei and the kinetic power in their jets…

astro-ph1996

Small groups of Galaxies as Cosmological Clocks

P. Tozzi, F. Governato, A. Cavaliere

We study the formation and evolution of small groups of galaxies using new Monte Carlo simulations. These are directly based on the random walk approach to the statistics of conden…

astro-ph1996

Towards a Better Understanding of Active Galactic Nuclei

Paolo Padovani

Active Galactic Nuclei (AGN) are ideal sources for multi-wavelength studies as their emission can cover almost 20 orders of magnitude in frequency from the radio to the gamma-ray b…

chao-dyn1996★ 35 cited

(1+1)-dimensional turbulence

R. Benzi, L. Biferale, R. Tripiccione +1

A class of dynamical models of turbulence living on a one-dimensional dyadic-tree structure is introduced and studied. The models are obtained as a natural generalization of the po…

astro-ph1996★ 23 cited

Are the X-ray Spectra of Flat-spectrum Radio Quasars and BL Lacertae Objects Different?

Paolo Padovani, Paolo Giommi, Fabrizio Fiore

We study the X-ray spectra of 114 flat-spectrum radio quasars (FSRQ) using the hardness ratios as given in the WGA catalogue of ROSAT sources. This sample includes all WGA FSRQ wit…

astro-ph1996★ 4 cited

Polarization of the Microwave Background: theoretical framework

Alessandro Melchiorri, Nicola Vittorio

We present a brief review of the polarization properties of the cosmic microwave background in dark matter models for structure formation. Quite independently of the model paramete…

comp-gas1996★ 32 cited

Turbulent channel flow simulations using a coarse-grained extension of the Lattice Boltzmann method

Giorgio Amati, Sauro Succi, Roberto Benzi

A coarse-grained version of the Lattice Boltzmann (LB) method is developed with the intent of enhancing its geometrical flexibility so as to be able to tackle a wider class of flow…

cond-mat1996★ 8 cited

Equilibrium properties of a Josephson junction ladder with screening effects

Juan J. Mazo, Jose C. Ciria

In this paper we calculate the ground state phase diagram of a Josephson Junction ladder when screening field effects are taken into account. We study the ground state configuratio…

hep-lat1996★ 1 cited

Non-perturbative renormalization in lattice QCD

G. C. Rossi

In this talk I will discuss a number of approaches designed to deal with the problem of setting up a fully non-perturbative renormalization procedure in lattice QCD. Methods based…

astro-ph1996★ 28 cited

CMB anisotropy at degree angular scales and the thermal history of the Universe

Paolo de Bernardis, Amedeo Balbi, Giancarlo De Gasperis +2

We study the anisotropy of the cosmic microwave background (CMB) in cold and mixed dark matter (CDM and MDM) models, with non scale-invariant primordial power spectra (i.e. $n \neq…

hep-ph1996

The Beauty of SUSY

A. Masiero, L. Silvestrini

B physics represents a privileged place to look for supersymmetry (SUSY) through its virtual effects. Here we discuss rare B decays (, , …

hep-lat1996★ 1 cited

DIS Structure Functions in Lattice QCD

Stefano Capitani, Giancarlo Rossi

In this talk I present the complete 1-loop perturbative computation of the renormalization constants and mixing coefficients of quark and gluon lattice operators of rank two and th…

nucl-th1996★ 51 cited

Electroproduction of the Roper resonance and the constituent quark model

F. Cardarelli, E. Pace, G. Salme' +1

A parameter-free evaluation of the electromagnetic transition form factors is performed within a light-front constituent quark model, using for the first time th…

funct-an1996★ 41 cited

Continuity of symplectically adjoint maps and the algebraic structure of Hadamard vacuum representations for quantum fields on curved spacetime

Rainer Verch

We derive for a pair of operators on a symplectic space which are adjoints of each other with respect to the symplectic form (that is, they are sympletically adjoint) that, if they…

hep-lat1996★ 8 cited

Non-perturbative renormalization in kaon decays

A. Donini, V. Giménez, G. Martinelli +4

We discuss the application of the MPSTV non-perturbative method \cite{NPM} to the operators relevant to kaon decays. This enables us to reappraise the long-standing question of the…

hep-th1996★ 116 cited

Comments on Gepner Models and Type I Vacua in String Theory

C. Angelantonj, M. Bianchi, G. Pradisi +2

We construct open descendants of Gepner models, concentrating mainly on the six-dimensional case, where they give type I vacua with rich patterns of Chan-Paton symmetry breaking an…

hep-ph1996★ 3 cited

Non-leptonic weak decays and final state interactions in lattice QCD

L. Silvestrini

We show that, under a reasonable "smoothness" hypothesis, it is possible to extract informations on the amplitude and phase of two-body non-leptonic weak decay matrix elements from…

hep-lat1996★ 3 cited

QCD at finite temperature and partially negative flavour numbers

G. M. de Divitiis, R. Frezzotti, M. Masetti +1

We study dynamical fermion effects in lattice QCD at finite temperature. The method adopted is basically the extrapolation from negative flavour numbers already tested at zero temp…

hep-th1996★ 16 cited

Twelve-Dimensional Aspects of Four-Dimensional N=1 Type I Vacua

Sergio Ferrara, Massimo Bianchi, Gianfranco Pradisi +2

Four-dimensional supergravity theories are reinterpreted in a 12-dimensional F-theory framework. The O(8) symmetry of N=8 supergravity is related to a reduction of F-theory on T_8,…