40.2k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR1.8k papers
- Deutsches Elektronen-Synchrotron DESYDE1.7k papers
- Lawrence Berkeley National LaboratoryUS1.7k papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR1.7k papers
- TU Dortmund UniversityDE1.6k papers
- Heidelberg UniversityDE1.6k papers
- The Ohio State UniversityUS1.6k papers
- Stockholm UniversitySE1.6k papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR1.5k papers
- University of California, IrvineUS1.5k papers
- Johannes Gutenberg University MainzDE1.5k papers
- Laboratoire de Physique Nucléaire et de Hautes ÉnergiesFR1.5k papers
143 papers · 1 filter
Cantor and band spectra for periodic quantum graphs with magnetic fields
Jochen Bruening, Vladimir Geyler, Konstantin Pankrashkin
We provide an exhaustive spectral analysis of the two-dimensional periodic square graph lattice with a magnetic field. We show that the spectrum consists of the Dirichlet eigenvalu…
Correlation effects in the valence bands of ferromagnetic semiconductor EuS
A. Sharma, W. Nolting
We present a many body analysis of the multi-band Kondo lattice model. The study is then combined with the first principles TB-LMTO band structure calculations, in order to investi…
Magnetic properties of a disordered Heisenberg binary spin system with long-range exchange
G. X. Tang, W. Nolting
The influence of substitutional disorder on the magnetic properties of disordered Heisenberg binary spin systems with long-range exchange integrals is studied. The equation of moti…
Monte Carlo based studies of a polarized positron source for International Linear Collider (ILC)
Ralph Dollan, Karim Laihem, Andreas Schaelicke
The full exploitation of the physics potential of an International Linear Collider (ILC) requires the development of a polarized positron beam. New concepts of polarized positron s…
Observation of Gamma Rays from the Galactic Center with the MAGIC Telescope
J. Albert, MAGIC collaboration
Recently, the Galactic Center has been reported to be a source of very high energy (VHE) gamma-rays by the VERITAS, CANGAROO and HESS experiments. The energy spectra as measured by…
Improved Measurement of the b-bbar Production Cross Section in 920 GeV Fixed-Target Proton-Nucleus Collisions
B Collaboration, I. Abt
A new measurement of the b-bbar production cross section in 920 GeV proton-nucleus collisions is presented by the HERA-B collaboration. The b-bbar production is tagged via inclusiv…
Measurement of the J/Psi Production Cross Section in 920 GeV/c Fixed-Target Proton-Nucleus Interactions
B collaboration
The mid-rapidity (dsigma_(pN)/dy at y=0) and total sigma_(pN) production cross sections of J/Psi mesons are measured in proton-nucleus interactions. Data collected by the HERA-B ex…
MAGIC observations of very high energy gamma-rays from HESS J1813-178
J. Albert, MAGIC collaboration
Recently, the HESS collaboration has reported the detection of gamma-ray emission above a few hundred GeV from eight new sources located close to the Galactic Plane. The source HES…
Towards a fully automated computation of RG-functions for the 3- O(N) vector model: Parametrizing amplitudes
Riccardo Guida, Paolo Ribeca
Within the framework of field-theoretical description of second-order phase transitions via the 3-dimensional O(N) vector model, accurate predictions for critical exponents can be…
First Passage Time Densities in Resonate-and-Fire Models
T. Verechtchaguina, I. M. Sokolov, L. Schimansky-Geier
Motivated by the dynamics of resonant neurons we discuss the properties of the first passage time (FPT) densities for nonmarkovian differentiable random processes. We start from an…
Phase structure of an Abelian two-Higgs model and high temperature superconductors
M. N. Chernodub, E. -M. Ilgenfritz, A. Schiller
We study the phase structure of a three dimensional Abelian Higgs model with singly- and doubly-charged scalar fields coupled to a compact Abelian gauge field. The model is pretend…
A detailed spectral and morphological study of the gamma-ray supernova remnant RX J1713.7-3946 with H.E.S.S
The HESS Collaboration, F. Aharonian
We present results from deep observations of the Galactic shell-type supernova remnant (SNR) RX J1713.7-3946 (also known as G347.3-0.5) conducted with the complete H.E.S.S. array i…
Comment on "Dephasing Times in Quantum Dots due to Elastic LO Phonon-Carrier Collisions"
E. A. Muljarov, R. Zimmermann
This paper is a Comment on Phys. Rev. Lett. 85, 1516 (2000) by A.V. Uskov, A.-P. Jauho, B. Tromborg, J. Mork, and R. Lang.
Gravitational Instantons from Gauge Theory
Hyun Seok Yang, Mario Salizzoni
A gauge theory can be formulated on a noncommutative (NC) spacetime. This NC gauge theory has an equivalent dual description through the so-called Seiberg-Witten (SW) map in terms…
Masses of heavy tetraquarks in the relativistic quark model
D. Ebert, R. N. Faustov, V. O. Galkin
The masses of heavy tetraquarks with hidden charm and bottom are calculated in the framework of the relativistic quark model. The tetraquark is considered as the bound state of a h…
Numerical simulations with two flavours of twisted-mass Wilson quarks and DBW2 gauge action
F. Farchioni, P. Hofmann, K. Jansen +9
Discretisation errors in two-flavour lattice QCD with Wilson-quarks and DBW2 gauge action are investigated by comparing numerical simulation data at two values of the bare gauge co…
Probing the topological structure of the QCD vacuum with overlap fermions
E. -M. Ilgenfritz, K. Koller, Y. Koma +3
Overlap fermions implement exact chiral symmetry on the lattice and are thus an appropriate tool for investigating the chiral and topological structure of the QCD vacuum. We study…
Near-field spectra of quantum well excitons with non-Markovian phonon scattering
G. Mannarini, R. Zimmermann
The excitonic absorption spectrum for a disordered quantum well in presence of exciton-acoustic phonon interaction is treated beyond the Markov approximation. Realistic disorder ex…
Nf=2 Lattice QCD and Chiral Perturbation Theory
L. Scorzato, F. Farchioni, P. Hofmann +10
By employing a twisted mass term, we compare recent results from lattice calculations of Nf=2 dynamical Wilson fermions with Wilson Chiral Perturbation Theory (WChPT). The final go…
Evolutionary search agents in complex landscapes - a new model for the role of competence and meta-competence (EVOLINO and other simulation tools)
Andrea Scharnhorst, Werner Ebeling
The acquisition of competence is a key element in the ability to assert oneself in the complex and rapidly changing modern worlds of work. This paper examines the evolution of comp…
Landau gauge ghost and gluon propagators and the Faddeev-Popov operator spectrum
A. Sternbeck, E. -M. Ilgenfritz, M. Müller-Preussker +1
In this talk we report on a recent lattice investigation of the Landau gauge gluon and ghost propagators in pure SU(3) lattice gauge theory with a special emphasis on the Gribov co…
Overlap Hypercube Fermions in QCD
W. Bietenholz, S. Shcheredin
We present simulation results obtained with overlap hypercube fermions in QCD near the chiral limit. We relate our results to chiral perturbation theory in both, the epsilon-regime…
Electronic properties of EuB6 in the ferromagnetic regime: Half-metal versus semiconductor
M. Kreissl, W. Nolting
To understand the halfmetallic ferromagnet EuB6 we use the Kondo lattice model for valence and conduction band. By means of a recently developed many-body theory we calculate the e…
Laplacian modes as a filter
Falk Bruckmann, Ernst-Michael Ilgenfritz
We compute low-lying eigenmodes of the gauge covariant Laplace operator on the lattice at finite temperature. For classical configurations we show how the lowest mode localizes the…