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The Slab Method to Measure the Topological Susceptibility
Wolfgang Bietenholz, Krzysztof Cichy, Philippe de Forcrand +2
In simulations of a model with topological sectors, algorithms which proceed in small update steps tend to get stuck in one sector, especially on fine lattices. This distorts the n…
Worm Algorithm for CP(N-1) Model
Tobias Rindlisbacher, Philippe de Forcrand
The CP(N-1) model in 2D is an interesting toy model for 4D QCD as it possesses confinement, asymptotic freedom and a non-trivial vacuum structure. Due to the lower dimensionality a…
Sampling of General Correlators in Worm Algorithm-based Simulations
Tobias Rindlisbacher, Oscar Akerlund, Philippe de Forcrand
Using the complex -model as a prototype for a system which is simulated by a worm algorithm, we show that not only the charged correlator , but also more gener…
Oscillating propagators in heavy-dense QCD
Oscar Akerlund, Philippe de Forcrand, Tobias Rindlisbacher
Using Monte Carlo simulations and extended mean field theory calculations we show that the -dimensional spin model with complex external fields has non-monotonic spatial c…
Mean distribution approach to spin and gauge theories
Oscar Akerlund, Philippe de Forcrand
We formulate self-consistency equations for the distribution of links in spin models and of plaquettes in gauge theories. This improves upon known mean-field, mean-link, and mean-p…
Aspects of topological actions on the lattice
Oscar Akerlund, Philippe de Forcrand
We consider a lattice action which forbids large fields, and which remains invariant under smooth deformations of the field. Such a "topological" action depends on one parameter, t…