NAME

Photonic::NonRetarded::OneH

VERSION

version 0.009

SYNOPSIS

    use Photonic::NonRetarded::OneH;
    my $nr=Photonic::NonRetarded::OneH->new(geometry=>$geometry);
    $nr->iterate;
    say $nr->iteration;
    say $nr->current_a;
    say $nr->next_b2;
    my $state=$nr->nextState;

DESCRIPTION

Implements calculation of Haydock coefficients and Haydock states for the calculation of the non retarded dielectric function of arbitrary periodic two component systems in arbitrary number of dimentions. One Haydock coefficient at a time.

METHODS

• new(geometry=>$g[, smallH=>$s])

  Create a new Ph::NR::OneH object with GeometryG0 $g and optional smallness parameter $s.

ACCESORS (read only)

• geometry Photonic::Types::GeometryG0

  A Photonic::Geometry object defining the geometry of the system, the charateristic function and the direction of the G=0 vector. Should be given in the initializer.

• B dims r G GNorm L scale f

  Accesors handled by geometry (see Photonic::Geometry)

• smallH

  A small number used as tolerance to end the iteration. Small negative b^2 coefficients are taken to be zero. Handled by Photonic::Roles::EpsParams

• previousState currentState nextState

  The n-1-th, n-th and n+1-th Haydock states; a complex number for each pixel

• current_a

  The n-th Haydock coefficient a

• current_b2 next_b2 current_b next_b

  The n-th and n+1-th b^2 and b Haydock coefficients

• iteration

  Number of completed iterations

METHODS

• iterate

  Performs a single Haydock iteration and updates current_a, next_state, next_b2, next_b, shifting the current values where necessary. Returns 0 when unable to continue iterating.