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Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Ludwig-Maximilians-Universität MünchenDE1.8k papers
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15 papers · 2 filters
Performance Tests of the Kramers Equation and Boson Algorithms for Simulations of QCD
Karl Jansen, Beat Jegerlehner, Chuan Liu
We present a performance comparison of the Kramers equation and the boson algorithms for simulations of QCD with two flavors of dynamical Wilson fermions and gauge group . R…
Non-perturbative renormalization of lattice QCD at all scales
Karl Jansen, Chuan Liu, Martin Luescher +5
A general strategy to solve the non-perturbative renormalization problem in lattice QCD, using finite-size techniques and numerical simulations, is described. As an illustration we…
Improvements of Lüscher's local bosonic fermion algorithm
Beat Jegerlehner
We discuss the application of hybrid over-relaxation, even-odd preconditioning and a modified local updating procedure to the local bosonic fermion algorithm. Studies on autocorrel…
Lattice Schwinger Model with interpolated Gauge Fields
Christof Gattringer
We analyze the Schwinger model on an infinite lattice using the continuum definition of the fermion determinant and a linear interpolation of the lattice gauge fields. The possible…
Lattice Investigations of the Running Coupling
Peter Weisz
A review of investigations of running couplings using lattice techniques is given. This includes i) studies of the running of particular non-perturbatively defined renormalized cou…
The running coupling from the QCD Schrödinger functional -- a one-loop analysis
Stefan Sint, Rainer Sommer
Starting from the Schrödinger functional, we give a non-perturbative definition of the running coupling constant in QCD. The spatial boundary conditions for the quark fields are ch…
Super-Instantons, Perfect Actions, Finite Size Scaling and the Continuum Limit
A. Patrascioiu, E. Seiler
We discuss some aspects of the continuum limit of some lattice models, in particular the models. The continuum limit is taken either in an infinite volume or in a box w…
Lattice fermions with gauge noninvariant measure
Sergei V. Zenkin
We define Weyl fermions on a finite lattice in such a way that in the path integral the action is gauge invariant but the functional measure is not. Two variants of such a formulat…
Full QCD with the Lüscher local bosonic action
C. Alexandrou, A. Borrelli, Ph. de Forcrand +2
We investigate Lüscher's method of including dynamical Wilson fermions in a lattice simulation of QCD with two quark flavours. We measure the accuracy of the approximation by compa…
Computation of the relation between the bare lattice coupling and the MSbar coupling in SU(N) gauge theories to two loops
Martin Luescher, Peter Weisz
The perturbation expansion of the MSbar coupling in the SU(N) gauge theory in powers of the bare lattice coupling is extended to two-loop order. A discussion of our results has alr…
Background field technique and renormalization in lattice gauge theory
Martin Luescher, Peter Weisz
Lattice gauge theory with a background gauge field is shown to be renormalizable to all orders of perturbation theory. No additional counterterms are required besides those already…
One-loop renormalization of the QCD Schrödinger functional
Stefan Sint
In a previous publication, we have constructed the Schrödinger functional in Wilson's lattice QCD. It was found that the naive continuum limit leads to a well-defined classical con…
Monte Carlo simulations of 4d simplicial quantum gravity
B. Bruegmann, E. Marinari
Dynamical triangulations of four-dimensional Euclidean quantum gravity give rise to an interesting, numerically accessible model of quantum gravity. We give a simple introduction t…
Coordinate space methods for the evaluation of Feynman diagrams in lattice field theory
Martin Luescher, Peter Weisz
We describe an efficient position space technique to calculate lattice Feynman integrals in infinite volume. The method applies to diagrams with massless propagators. For illustrat…
Two-loop relation between the bare lattice coupling and the MSbar coupling in pure SU(N) gauge theories
Martin Luescher, Peter Weisz
We report the result of a computation of the relation between the renormalized coupling in the MSbar scheme of dimensional regularization and the bare coupling in the standard latt…