DiracODE::Internal::Param Namespace Reference

Detailed Description

Parameters used for Adams-Moulton bound-state solver.

Variables
constexpr std::size_t	K_Adams = 7
	K (# steps) for Adams-Moulton method (between 1 and 12).
constexpr double	cALR = 550.0
	Parameter to determine 'asymptotically large r'.
constexpr int	max_its = 99
	Max # attempts at converging bound-state energy.
constexpr double	lfrac_de = 0.12
	Fractional size of 'large' energy update steps (~12%).
constexpr int	d_ctp = 4
	Number of grid points either side of the classical turning point.
constexpr int	nx = 15
	Order of coefficients in the large-r asymptotic expansion.
constexpr double	nx_eps = 1.e-12
	Convergence threshold for the asymptotic expansion.
constexpr auto	weight
	Weighting function for meshing inward/outward solutions at the turning point. Must be positive; index i may be negative [ctp - d_ctp].

Variable Documentation

K_Adams

constexpr std::size_t DiracODE::Internal::Param::K_Adams = 7

constexpr

K (# steps) for Adams-Moulton method (between 1 and 12).

cALR

constexpr double DiracODE::Internal::Param::cALR = 550.0

constexpr

Parameter to determine 'asymptotically large r'.

max_its

constexpr int DiracODE::Internal::Param::max_its = 99

constexpr

Max # attempts at converging bound-state energy.

lfrac_de

constexpr double DiracODE::Internal::Param::lfrac_de = 0.12

constexpr

Fractional size of 'large' energy update steps (~12%).

d_ctp

constexpr int DiracODE::Internal::Param::d_ctp = 4

constexpr

Number of grid points either side of the classical turning point.

nx

constexpr int DiracODE::Internal::Param::nx = 15

constexpr

Order of coefficients in the large-r asymptotic expansion.

nx_eps

constexpr double DiracODE::Internal::Param::nx_eps = 1.e-12

constexpr

Convergence threshold for the asymptotic expansion.

weight

constexpr auto DiracODE::Internal::Param::weight

constexpr

Initial value:

= [](std::size_t i) {
  return 1.0 / static_cast<double>(i * i + 1);
}

Weighting function for meshing inward/outward solutions at the turning point. Must be positive; index i may be negative [ctp - d_ctp].