Parameter: chgrd
Definition
Number of linear grid points in [-1,1] which is used to define the Chebyshev polynomials.
Type
Integer
Default value
20001
Component
Only for the GARDENIA, NARCISSUS, LAVENDER, CAMELLIA, and MANJUSHAKA components.
Behavior
The second kind Chebyshev orthogonal polynomials are defined in a linear grid in [-1,1]. And the number of grid points is controlled by this parameter.
Comment
This parameter is useful only when isort = 3 or isort = 6 . See isort for more details. The 20001 is an optimal value for chgrd. It is not recommended to modify it.
See also chmax for more details.
As for the applications of orthogonal polynomials in CT-QMC impurity solver, please refer to Lewin's[1] and Hartmann's[2] papers.
Reference