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hep-th2002★ 6 cited

From Boundaries To Conditions Over Superspace

Zheng Yin

N=1 and 2 superconformal boundary conditions are shown to be the consequence of a boundary on the worldsheet superspace with positive codimension in the anticommuting subspace. In…

gr-qc2002

Primordial Magnetic Fields and Stochastic GW Backgrounds

Massimo Giovannini

Operating resonant mass detectors set interesting bounds on diffused backgrounds of gravitational radiation and in the next five years the wide-band interferometers will also look…

hep-th2002★ 4 cited

Universal Calabi-Yau Algebra: Classification and Enumeration of Fibrations

F. Anselmo, J. Ellis, D. V. Nanopoulos +1

We apply a universal normal Calabi-Yau algebra to the construction and classification of compact complex -dimensional spaces with SU(n) holonomy and their fibrations. This algeb…

hep-ex2002★ 9 cited

Search for the decay

A. Lai

A search for the decay has been made using the NA48 detector at the CERN SPS. Using data collected in 1999 during a 40-hour run with a high-intensity beam, an u…

hep-th2002★ 21 cited

N=2 Super-Higgs, N=1 Poincare' Vacua and Quaternionic Geometry

L. Andrianopoli, R. D'Auria, S. Ferrara +1

In the context of N=2 supergravity we explain the occurrence of partial super-Higgs with vanishing vacuum energy and moduli stabilization in a model suggested by superstring compac…

hep-th2002★ 23 cited

The Cosmological Constant and the Deconstruction of Gravity

Vishnu Jejjala, Robert G. Leigh, Djordje Minic

Witten has presented an argument for the vanishing of the cosmological constant in 2+1 dimensions. This argument is crucially tied to the specific properties of (2+1)-dimensional g…

hep-ph2002★ 2 cited

Heavy Quarkonium Inclusive Decays: Theoretical Status and Perspectives

Antonio Vairo

I review some recent progress and open problems in the calculation of heavy-quarkonium inclusive decay widths into light particles in the framework of QCD non-relativistic effectiv…

astro-ph2002★ 4 cited

Magnetogenesis, variation of gauge couplings and inflation

Massimo Giovannini

The interplay among the possible variation of gauge coupling and the inflationary dynamics is investigated in a simplified toy model. Depending upon various parameters (scalar mass…

astro-ph2002★ 42 cited

Does the Sun Shine by pp or CNO Fusion Reactions?

John N. Bahcall, M. C. Gonzalez-Garcia, C. Penya-Garay

We show that solar neutrino experiments set an upper limit of 7.8% (7.3% including the recent KamLAND measurements) to the fraction of energy that the Sun produces via the CNO fusi…

nucl-th2002

Freeze-out in ultra-relativistic heavy-ion collisions

Boris Tomasik

I discuss the effects and quantities that influence the decoupling of particles from the fireball. The crucial role is played by the scattering rate. I show the results for the sca…

hep-th2002★ 17 cited

Gauged extended supergravity without cosmological constant: no-scale structure and supersymmetry breaking

L. Andrianopoli, R. D'Auria, S. Ferrara +1

We consider the interplay of duality symmetries and gauged isometries of supergravity models giving N-extended, spontaneously broken supergravity with a no-scale structure. Some ex…

hep-lat2002★ 1 cited

More on Electric and Magnetic Fluxes in SU(2)

Lorenz von Smekal, with Philippe de Forcrand, Oliver Jahn

The free energies of static charges and center monopoles are given by their fluxes. While electric fluxes show the universal behaviour of the deconfinement transition, the monopole…

hep-lat2002★ 1 cited

B_K from quenched overlap QCD

N. Garron, L. Giusti, C. Hoelbling +2

We present an exploratory calculation of the standard model Delta S=2 matrix element relevant for indirect CP violation in K -> pi pi decays. The computation is performed with over…

hep-ph2002★ 37 cited

Constraints on pre-big bang parameter space from CMBR anisotropies

V. Bozza, M. Gasperini, M. Giovannini +1

The so-called curvaton mechanism --a way to convert isocurvature perturbations into adiabatic ones-- is investigated both analytically and numerically in a pre-big bang scenario wh…

hep-th2002★ 128 cited

Solvable model of strings in a time-dependent plane-wave background

G. Papadopoulos, J. G. Russo, A. A. Tseytlin

We investigate a string model defined by a special plane-wave metric ds^2 = 2dudv - l(u) x^2 du^2 + dx^2 with l(u) = k/u^2 and k=const > 0. This metric is a Penrose limit of some c…

hep-lat2002★ 130 cited

Numerical techniques for lattice QCD in the --regime

L. Giusti, C. Hoelbling, M. Lüscher +1

In lattice QCD it is possible, in principle, to determine the parameters in the effective chiral lagrangian (including weak interaction couplings) by performing numerical simulatio…

hep-th2002★ 1 cited

Rotating D-branes and O-planes

C. Angelantonj

We review orientifold constructions in the presence of magnetic backgrounds both in the open and closed sectors. Generically, the resulting orientifold models have a nice geometric…

hep-th2002★ 44 cited

No-scale N=4 supergravity coupled to Yang-Mills: the scalar potential and super-Higgs effect

Riccardo D'Auria, Sergio Ferrara, Maria Antonia Lledó +1

We derive the scalar potential of the effective theory of type IIB orientifold with 3-form fluxes turned on in presence of non abelian brane coordinates. N=4 supergravity predicts…

hep-ph2002★ 5 cited

QCD at high energy

S. Frixione

I review recent results in QCD at high energy, emphasizing the role of higher-order computations, power corrections, and Monte Carlo simulations in the study of a few discrepancies…

nucl-th2002★ 8 cited

Hadron wave functions and the issue of nucleon deformation

C. Alexandrou, Ph. de Forcrand, A. Tsapalis

Using gauge invariant hadronic two- and three- density correlators we extract information on the spatial distributions of quarks in hadrons, and on hadron shape and multipole momen…

nucl-ex2002★ 58 cited

A New Measurement of the Proton Capture Rate on 7Be and the S17(0) Factor

L. T. Baby, C. Bordeanu, G. Goldring +9

The 7Be(p,gamma)8B reaction plays a central role in the evaluation of solar neutrino fluxes. We report on a new precision measurement of the cross section of this reaction, followi…

hep-th2002★ 20 cited

Large Spin Strings in AdS_3

Amit Loewy, Yaron Oz

We consider strings with large spin in AdS_3xS^3xM with NS-NS background. We construct the string configurations as solutions of SL(2,R) WZW theory. We compute the relation between…

hep-th2002★ 58 cited

A Soluble String Theory of Hadrons

Eric G. Gimon, Leopoldo A. Pando Zayas, Jacob Sonnenschein +1

We consider Penrose limits of the Klebanov-Strassler and Maldacena-Nunez holographic duals to N =1 supersymmetric Yang-Mills. By focusing in on the IR region we obtain exactly solv…

hep-ph2002★ 168 cited

Present Status of Inclusive Rare B Decays

Tobias Hurth

We give a status report on inclusive rare B decays, highlighting recent developments and open problems. We focus on the decay modes , and…