loop_2pt: compute two-point correlation function between quark loops

In hadron: Analysis Framework for Monte Carlo Simulation Data in Physics

compute two-point correlation function between quark loops

Description

compute two-point correlation function between quark loops

Usage

loop_2pt(loop_snk, loop_src, random_vectors_outer_product = FALSE,
  nstoch_to_avg = "all")

Arguments

loop_snk	'raw_cf' container with spin-projected quark loop at sink (see loop_spin_project)
loop_src	'raw_cf' container with spin-projected quark loop at source (see loop_spin_project)
random_vectors_outer_product	Boolean. For testing purposes, the average over all random sample combinations can be carried out explicitly as ∑_{i \neq j} Tr[ Γ_snk M_i ] Tr[ Γ_src M_j ] instead of the (much faster) equivalent (∑_i Tr[ Γ_snk M_i ])*(∑_j Tr[ Γ_src M_j ]) - ∑_i ( Tr[ Γ_snk M_i ] Tr[ Γ_src M_i ] ) .
nstoch_to_avg	String or integer, how many of the available stochastic samples should be averaged over. See loop_stochav for details.

Value

'raw_cf' container with two-point function of these two quark loops. In the calculation, both averaging over all source locations and the average over all stochastic sample combinations are performed.

hadron documentation built on Sept. 9, 2022, 5:06 p.m.