18 citations · 50 across the 18 of their papers we have counts for
18 papers
A real world test of Portfolio Optimization with Quantum Annealing
Wolfgang Sakuler, Johannes M. Oberreuter, Riccardo Aiolfi +3
In this note, we describe an experiment on portfolio optimization using the Quadratic Unconstrained Binary Optimization (QUBO) formulation. The dataset we use is taken from a real-…
TYC 3637-1152-1 - a High Amplitude delta Scuti star with peculiar pulsational properties
Ernst Paunzen, Klaus Bernhard, Moriz Frauenberger +16
In some delta Scuti stars, only one or two radial modes are excited (usually the fundamental mode and/or first overtone mode) and the observed peak-to-peak amplitudes exceed 0.3 ma…
Observables of Lattice Gauge Theory in Minkowski Space
Tamas S. Biro, Harald Markum, Rainer Pullirsch +1
U(1) gauge fields are decomposed into a monopole and photon part across the phase transition from the confinement to the Coulomb phase. We analyze the leading Lyapunov exponents of…
Lyapunov exponents in Minkowskian U(1) gauge theory
Harald Markum, Rainer Pullirsch, Wolfgang Sakuler
U(1) gauge fields are decomposed into a monopole and photon part across the phase transition from the confinement to the Coulomb phase. We analyze the leading Lyapunov exponents of…
Monopoles and Lyapunov Exponents in U(1) Lattice Gauge Theory
Harald Markum, Rainer Pullirsch, Wolfgang Sakuler
U(1) gauge fields are decomposed into a monopole and photon part across the phase transition from the confinement to the Coulomb phase. We analyze the leading Lyapunov exponents of…
Monopoles and Chaos
Harald Markum, Rainer Pullirsch, Wolfgang Sakuler
We decompose U(1) gauge fields into a monopole and photon part across the phase transition from the confinement to the Coulomb phase. We analyze the leading Lyapunov exponents of s…
Zero-modes of the QED Neuberger Dirac operator
Bernd A. Berg, Urs M. Heller, Harald Markum +2
We consider compact lattice QED in the quenched approximation. First, we briefly summarize the spectrum of the staggered Dirac operator and its connection with random matrix t…
Exact Zero-Modes of the Compact QED Dirac Operator
Bernd A. Berg, Urs M. Heller, Harald Markum +2
We calculate the low-lying eigenmodes of the Neuberger overlap-Dirac operator for compact lattice QED in the quenched approximation. In the strong coupling phase we find exact…
Chirality tubes along monopole trajectories
Harald Markum, Wolfgang Sakuler, Stefan Thurner
We classify the lattice by elementary 3-cubes which are associated to dual links occupied by, or free of monopoles. We then compute the quark condensate, the quark charge and the c…
Distribution of fermionic and topological observables on the lattice
W. Sakuler, S. Thurner, H. Markum
We analyze the topological and fermionic vacuum structure of four-dimensional QCD on the lattice by means of correlators of fermionic observables and topological densities. We show…
Chiral condensate, quark charge and chiral density
Harald Markum, Wolfgang Sakuler, Stefan Thurner
We study the topological and fermionic vacuum structure of four-dimensional QCD on the lattice by means of correlators of fermionic observables and topological densities. We show t…
Towards a Topological Mechanism of Quark Confinement
E. -M. Ilgenfritz, H. Markum, M. Müller--Preussker +2
We report on new analyses of the topological and chiral vacuum structure of four-dimensional QCD on the lattice. Correlation functions as well as visualization of monopole currents…
Meson-meson interactions -- from static to dynamic valence quarks
H. R. Fiebig, H. Markum, A. Mihály +3
A method for the extraction of an effective meson-meson potential from Green functions, which can be obtained from a lattice simulation, is presented. Simulations are carried out f…
Correlation functions between monopoles and instantons
H. Markum, W. Sakuler, S. Thurner
We analyze the relation between instantons and abelian projected monopoles in both phases of pure QCD by calculating local correlation functions between topological charge densitie…
Correlations between Quarks, Monopoles and Instantons
St. Thurner, H. Markum, W. Sakuler
We analyze topological objects in pure QCD in the presence of external quarks by calculating the distributions of instanton and monopole densities around static color sources. We f…
Topological charge density around static colour sources in lattice QCD with dynamical quarks
M. Faber, H. Markum, S. Olejnik +1
We update our numerical investigation of topological structures around static quarks in pure gauge QCD by results of the first runs including dynamical quarks. Simulations were per…
Gluon Versus Meson Exchange in Hadron-Hadron Systems on the Lattice
H. Markum, K. Rabitsch, W. Sakuler
The interaction of spatially extended heavy hadrons is investigated in the framework of lattice QCD with dynamical quarks. In addition to the baryon-baryon potential results for th…
Topological charge density around static color sources
Manfried Faber, Harald Markum, Stefan Olejnik +1
We analyze the topological structure of quenched QCD in the presence of static color sources. Distributions of the topological charge density around static quarks and mesons are co…