Prospects for perfect actions
P. Hasenfratz
Abstract
The fixed-point (FP) action in QCD, although it is local and determined by classical equations, is difficult to parametrize well and is expensive to simulate. But the stake is high: the FP action has scale invariant instanton solutions, has no topological artifacts, satisfies the index theorem on the lattice, does not allow exceptional configurations, requires no tuning to get the pion massless and is expected to reduce the cut-off effects significantly. An overview is given including a discussion on tests in Yang-Mills theory, QCD and d=2 spin and gauge models.
Create a lesson
Related papers
Confining strings in the reconfined phase of trace deformed three dimensional SU(2) Yang-Mills theory
Claudio Bonati, Michele Caselle, Alessio Negro et al.
Generalizable Equivariant Diffusion Models for Non-Abelian Lattice Gauge Theory: Analytical Foundations and Numerical Scaling Tests
Gert Aarts, Diaa E. Habibi, Andreas Ipp et al.
2+1 flavor light hadron spectrum with PACS10 configurations
K. -I. Ishikawa, N. Ishizuka, Y. Kuramashi et al.
Precision determination of Bc and Bc* meson decay constants from lattice QCD
Navdeep Singh Dhindsa, Debsubhra Chakraborty, Nilmani Mathur
Meson spectroscopy from lattice QCD
Andrew W. Jackura
Generative sampling with physics-informed kernels
Friederike Ihssen, Renzo Kapust, Jan M. Pawlowski