Conveners
Stochastic Trace Estimation
- Stefan Schaefer
Stochastic Trace Estimation
- Stefan Schaefer
Stochastic Trace Estimation
- Mike Peardon
The calculation of disconnected diagram contributions to physical signals is
a computationally expensive task in Lattice QCD. To extract the physical
signal, the trace of the inverse Lattice Dirac operator, a large sparse matrix,
must be stochastically estimated. Because the variance of the stochastic es-
timator is typically large, variance reduction techniques must be...
We summarize our results for the $\eta$ and $\eta^\prime$ masses and
their four independent decay constants at the physical point as well as
their anomalous gluonic matrix elements $a_{\eta^{(\prime)}}$.
The computation employs twenty-one $N_f=2+1$ Coordinated Lattice
Simulations (CLS) ensembles with non-perturbatively improved Wilson
fermions at four different lattice spacings and...
A precise knowledge of nucleon axial formfactors is needed for the new generation of terrestrial neutrino experiments. This is particularly challenging due to increased contamination, in this sector, from excitations, in particular from $N\pi$ scattering states. Transitions from a $N$ to a $N\pi$, mediated by an axial current are also interesting themselves, as these can be related to neutrino...
