Speaker
Marco Garofalo
(Higgs Centre for Theoretical Physics, The University of Edinburgh)
Description
Numerical stochastic perturbation theory (NSPT) is a powerful tool for estimating high-order perturbative expansions in lattice field theory. The standard NSPT is based on the Langevin equation. In this contribution, we investigate in $\varphi^4$ theory some alternative methods. In particular, we present a study of the recently proposed Instantaneous Stochastic Perturbation Theory, as well as a formulation of numerical stochastic perturbation theory based on Generalised Hybrid Molecular Dynamics algorithms.
| Title | Numerical Stochastic Perturbation Theory in $\varphi^4$ Theory |
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Primary authors
Marco Garofalo
(Higgs Centre for Theoretical Physics, The University of Edinburgh)
Mattia Dalla Brida
(DESY - Zeuthen)
Prof.
Anthony Kennedy
(Higgs Centre for Theoretical Physics, The University of Edinburgh)
