gevp.hankel_summed: GEVP method based on Hankel matrices.

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

GEVP method based on Hankel matrices.

Description

Alternative method to determine energy levels from correlation matrices. A so-called Hankel matrix is generated from an input real numeric vector and a generalised eigenvalue problem is solved then.

Usage

gevp.hankel_summed(cf, t0values = c(1), deltat = 1, n, N)

Arguments

cf	Numeric vector (this will generally be the time slices of a correlation function).
t0values	Integer vector. The t0 values to sum over.
deltat	Integer. The value of the time shift to use to build the Hankel matrices.
n	Integer. Size of the Hankel matrices to generate
N	Integer. Maximal time index in correlation function to be used in Hankel matrix

Value

A complex vector of length n + n^2 which contains the eigenvalues in the first n elements and the eigenvectors in the remaining n^2 elements.

A vector of NAs of n + n^2 is returend in case the QR decomposition fails.

See Also

Other hankel: bootstrap.hankel_summed(), bootstrap.hankel(), gevp.hankel(), hankel2cf(), hankel2effectivemass(), plot_hankel_spectrum()

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