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7 papers · 2 filters
Adaptive gauge cooling for complex Langevin dynamics
Lorenzo Bongiovanni, Gert Aarts, Erhard Seiler +2
In the case of nonabelian gauge theories with a complex weight, a controlled exploration of the complexified configuration space during a complex Langevin process requires the use…
Complex Langevin simulation for QCD-like models
Gert Aarts, Lorenzo Bongiovanni, Erhard Seiler +2
We first test the Complex Langevin method (CLE) on various simple models. We then introduce the method of Gauge Cooling to control the dynamics of the process and ensure thin distr…
Localised distributions in complex Langevin dynamics
Pietro Giudice, Gert Aarts, Erhard Seiler
Complex Langevin dynamics can be used to perform numerical simulations of theories with a complex action. In order to justify the procedure, it is important to understand the prope…
Localised distributions and criteria for correctness in complex Langevin dynamics
Gert Aarts, Pietro Giudice, Erhard Seiler
Complex Langevin dynamics can solve the sign problem appearing in numerical simulations of theories with a complex action. In order to justify the procedure, it is important to und…
Symanzik effective actions in the large N limit
Janos Balog, Ferenc Niedermayer, Peter Weisz
Symanzik effective actions, conjectured to describe lattice artifacts, are determined for a class of lattice regularizations of the non-linear O(N) sigma model in two dimensions in…
Controlling complex Langevin dynamics at finite density
Gert Aarts, Lorenzo Bongiovanni, Erhard Seiler +2
At nonzero chemical potential the numerical sign problem in lattice field theory limits the use of standard algorithms based on importance sampling. Complex Langevin dynamics provi…