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168 papers · 1 filter
The Role of Integration Cycles in Complex Langevin Simulations
Michael W. Hansen, Michael Mandl, Erhard Seiler +1
Complex Langevin simulations are an attempt to solve the sign (or complex-action) problem encountered in various physical systems of interest. The method is based on a complexifica…
Complex Langevin: Boundary terms at poles
Erhard Seiler
We discuss the problem of possible boundary terms at poles of the drift in the complex Langevin method, which spoil correctness of the method. For the simplest, however paradigmati…
Controlling Complex Langevin simulations of lattice models by boundary term analysis
M. Scherzer, E. Seiler, D. Sexty +1
One reason for the well known fact that the Complex Langevin (CL) method sometimes fails to converge or converges to the wrong limit has been identified long ago: it is insufficien…
Complex Langevin and boundary terms
Manuel Scherzer, Erhard Seiler, Dénes Sexty +1
As is well known the Complex Langevin (CL) method sometimes fails to converge or converges to the wrong limit. We identified one reason for this long ago: insufficient decay of the…
Getting even with CLE
Gert Aarts, Kirill Boguslavski, Manuel Scherzer +3
In the landscape of approaches toward the simulation of Lattice Models with complex action the Complex Langevin (CL) appears as a straightforward method with a simple, well defined…
Beyond Complex Langevin Equations: positive representation of a class of complex measures
Erhard Seiler, Jacek Wosiek
A positive representation for a set of complex densities is constructed. In particular, complex measures on a direct product of U(1) groups are studied. After identifying general c…