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math.RT2003

Higher secant varieties of the minimal adjoint orbit

Karin Baur, Jan Draisma

We try to write (generic) elements of classical simple Lie algebras as sums of as few elements of the orbit C of long root vectors as possible. If the Lie algebra in question is sl…

astro-ph2003★ 78 cited

Large-Scale Model of the Milky Way: Stellar Kinematics and Microlensing Event Timescale Distribution in the Galactic Bulge

Nicolai Bissantz, Victor P. Debattista, Ortwin Gerhard

We build a stellar-dynamical model of the Milky Way barred bulge and disk, using a newly implemented adaptive particle method. The underlying mass model has been previously shown t…

astro-ph2003★ 87 cited

On the C and N Abundances of 47 Tucanae Main Sequence Stars

Michael M. Briley, Daniel Harbeck, Graeme H. Smith +1

We report the results of an analysis of CN and CH band strengths among a large sample of 47 Tucanae main-sequence and turn-off stars presented earlier by Harbeck et al. The resulti…

astro-ph2003★ 115 cited

The nuclear reaction waiting points, Mg22, Si26, S30, and Ar34, and bolometrically double peaked type I X-ray bursts

Jacob Lund Fisker, Friedrich-Karl Thielemann

Type I X-ray bursts with a double peak in the bolometric luminosity have been observed from several sources. The separation between the two peaks are on the order of a few seconds.…

hep-ex2003★ 8 cited

Search for Colour Singlet and Colour Reconnection Effects in Hadronic Z Decays at LEP

L3 Collaboration

A search is performed in symmetric 3-jet hadronic Z decay events for evidence of colour singlet production or colour reconnection effects. Asymmetries in the angular separation of…

cond-mat.mes-hall2003★ 4 cited

Full Counting Statistics in Quantum Contacts

W. Belzig

Full counting statistics is a fundamentally new concept in quantum transport. After a review of basic statistics theory, we introduce the powerful Green's function approach to full…

cond-mat.mes-hall2003★ 8 cited

Andreev reflection eigenvalue density in mesoscopic conductors

P. Samuelsson, W. Belzig, Yu. V. Nazarov

The energy-dependent Andreev reflection eigenvalues determine the transport properties of normal-superconducting systems. We evaluate the eigenvalue density to get an insight into…

astro-ph2003★ 259 cited

Gas Physics, Disk Fragmentation, and Bulge Formation in Young Galaxies

Andreas Immeli, Markus Samland, Ortwin Gerhard +1

We investigate the evolution of star-forming gas-rich disks, using a 3D chemodynamical model including a dark halo, stars, and a two-phase interstellar medium with feedback process…

cond-mat.mes-hall2003★ 65 cited

Asymmetric Quantum Shot Noise in Quantum Dots

Hans-Andreas Engel, Daniel Loss

We analyze the frequency-dependent noise of a current through a quantum dot which is coupled to Fermi leads and which is in the Coulomb blockade regime. We show that the asymmetric…

astro-ph2003★ 33 cited

Resonance analysis of Sm(n,alpha) cross sections: Comparison to optical model calculations and indications of non-statistical effects

P. E. Koehler, Yu. M. Gledenov, T. Rauscher +1

We have measured the Sm(\textit{n},) cross section from 3 eV to 500 keV and performed an -matrix analysis in the resolved region ( 700 eV) to extr…

physics.ins-det2003★ 13 cited

Position Dependence of Charge Collection in Prototype Sensors for the CMS Pixel Detector

T. Rohe, D. Bortoletto, V. Chiochia +10

This paper reports on the sensor R&D activity for the CMS pixel detector. Devices featuring several design and technology options have been irradiated up to a proton fluencec of 1E…

nucl-ex2003★ 140 cited

Photoproduction of eta-mesic 3He

M. Pfeiffer, J. Ahrens, J. R. M. Annand +23

The photoproduction of eta-mesic 3He has been investigated using the TAPS calorimeter at the Mainz Microtron accelerator facility MAMI. The total inclusive cross section for the re…

hep-ph2003★ 4 cited

Coulomb Corrections for Coherent Electroproduction of Vector Mesons: Eikonal Approximation

A. Aste, K. Hencken, D. Trautmann

Virtual radiative corrections due to the long range Coulomb forces of heavy nuclei with charge Z may lead to sizeable corrections to the Born cross section usually used for lepton-…

cond-mat.mes-hall2003★ 33 cited

Spin injection across magnetic/non-magnetic interfaces with finite magnetic layers

Alexander Khaetskii, J. Carlos Egues, Daniel Loss +3

We have reconsidered the problem of spin injection across ferromagnet/non-magnetic-semiconductor (FM/NMS) and dilute-magnetic-semiconductor/non-magnetic-semiconductor interfaces, f…

cond-mat.mes-hall2003★ 197 cited

Kondo Effect and Josephson Current through a Quantum Dot between Two Superconductors

Mahn-Soo Choi, Minchul Lee, Kicheon Kang +1

We investigate the supercurrent through a quantum dot for the whole range of couplings using the numerical renormalization group method. We find that the Josephson current switches…

cond-mat.mes-hall2003

Transport through ferromagnet/superconductor interfaces

Zhigang Jiang, Jose Aumentado, Wolfgang Belzig +1

The differential resistance of submicron-size ferromagnet/superconductor interface structures shows asymmetries as a function of the current through the ferromagnet/superconductor…

physics.ins-det2003★ 21 cited

Tests of silicon sensors for the CMS pixel detector

A. Dorokhov, C. Amsler, D. Bortoletto +11

The tracking system of the CMS experiment, currently under construction at the Large Hadron Collider (LHC) at CERN (Geneva, Switzerland), will include a silicon pixel detector prov…

cond-mat.mes-hall2003★ 226 cited

Electron spin dynamics in quantum dots and related nanostructures due to hyperfine interaction with nuclei

John Schliemann, Alexander Khaetskii, Daniel Loss

We review and summarize recent theoretical and experimental work on electron spin dynamics in quantum dots and related nanostructures due to hyperfine interaction with surrounding…

nucl-th2003★ 188 cited

Neutrino-nucleus reactions and nuclear structure

E. Kolbe, K. Langanke, G. Martínez-Pinedo +1

The methods used in the evaluation of the neutrino-nucleus cross section are reviewed. Results are shown for a variety of targets of practical importance. Many of the described rea…

astro-ph2003★ 3 cited

Fluctuations of K-band galaxy counts

M. Lopez-Corredoira, J. E. Betancort-Rijo

We measure the variance in the distribution of off-plane (|b|>20 deg.) galaxies with m_K<13.5 from the 2MASS K-band survey in circles of diameter between 0.344 deg. and 57.2 deg. T…

astro-ph2003★ 67 cited

Tracing the Star Stream Through M31 Using Planetary Nebula Kinematics

H. R. Merrett, K. Kuijken, M. R. Merrifield +12

We present a possible orbit for the Southern Stream of stars in M31, which connects it to the Northern Spur. Support for this model comes from the dynamics of planetary nebulae (PN…

hep-ex2003★ 138 cited

Photoproduction of eta mesons off protons for photon energies from 0.75 GeV to 3 GeV

Volker Crede, Olivia Bartholomy

Total and differential cross sections for the reaction p(gamma, eta)p have been measured for photon energies in the range from 750 MeV to 3 GeV. The low-energy data are dominated b…

nucl-ex2003★ 40 cited

Double Photoproduction off the Proton at Threshold

M. Kotulla, J. Ahrens, J. R. M. Annand +14

The reaction has been measured using the TAPS BaF calorimeter at the tagged photon facility of the Mainz Microtron accelerator. Chiral perturbation theory (C…

cond-mat.mes-hall2003★ 464 cited

Phonon-induced decay of the electron spin in quantum dots

Vitaly N. Golovach, Alexander Khaetskii, Daniel Loss

We study spin relaxation and decoherence in a GaAs quantum dot due to spin-orbit interaction. We derive an effective Hamiltonian which couples the electron spin to phonons or any o…