disc_3pt: disconnected contribution to current insertion three-point...

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

disconnected contribution to current insertion three-point function

Description

Computes the quark-line disconnected contribution to a three-point function of the form

C_3(t, Δ t = t_{snk} - t_{src}) = C_2(t_{snk}, t_{src}) * L(t)

\forall t considering only the case t_snk > t_src.

Usage

disc_3pt(cf_2pt, loop, src_ts, dt, reim_loop = "both", reim_2pt = "both",
  vev_subtract = FALSE)

Arguments

cf_2pt	'raw_cf' container holding two-point part of three-point function in lattice-absolute coordinates (not relative to source!)
loop	'raw_cf' container holding loop contribution, suitably spin-projected and averaged over stochastic samples.
src_ts	Integer vector, the source time slices that were used for the computation of the two-point function in lattice-absolute coordinates. Must be of the same length as the number of measurements in cf_2pt.
dt	Integer, the source-sink separation that should be computed.
reim_loop	String, one of 'real', 'imag' or 'both'. Specifies whether just the real or imaginary part should be considered when constructing the correlation with the two-point function.
reim_2pt	String, same as reim_loop but for the two-point contribution to the three-point function.
vev_subtract	Boolean, whether the loop contains a vev which should be subtracted.

Value

raw_cf container with the product of loop and 2pt function, shifted in time to be relative to source using the info from src_ts

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