Speakers
Prof.
Anthony Kennedy
Johann Ostmeyer
(University of Bonn)
Description
The sensible application of the Hybrid Monte Carlo (HMC) method to the Hubbard model is hindered by the emergence of infinite potential barriers due to a vanishing fermion determinant, resulting in an ergodicity problem that needs to be resolved. This can be achieved by augmenting the HMC algorithm with radial updates, which refer to multiplicative Metropolis-Hastings updates in a radial direction of the non-compact fields. These radial updates facilitate jumps over the potential barriers, thereby restoring ergodicity while simultaneously reducing autocorrelation times at a comparably low computational cost.
| Parallel Session (for talks only) | Algorithms and artificial intelligence |
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Author
Finn Temmen
(University of Bonn)
Co-authors
Prof.
Anthony Kennedy
Evan Berkowitz
(Forschungszentrum Jülich)
Johann Ostmeyer
(University of Bonn)
Thomas Luu
(University of Bonn)
Xinhao Yu
(University of Edinburgh)
