NAME

Photonic::Retarded::OneH

VERSION

version 0.009

SYNOPSIS

    use Photonic::Retarded::OneH;
    my $nr=Photonic::Retarded::OneH->new(metric=>$g, polarization=>$p);
    $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 retarded dielectric function of arbitrary periodic two component systems in arbitrary number of dimentions. One Haydock coefficient at a time.

METHODS

• new(metric=>$m, polarization=>$e, [, smallH=>$s])

  Create a new Ph::R::OneH object with PDL::Retarded::Metric $m, with a field along the complex direction $e and with smallness parameter $s.

ACCESORS (read only)

• metric Photonic::Retarded::Metric

  A Photonic::Retarded::Metric object defining the geometry of the system, the charateristic function, the wavenumber, wavevector and host dielectric function. Required in the initializer.

• polarization PDL::Complex

  A non null vector defining the complex direction of the macroscopic field.

• smallH

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

• B ndims dims epsilon

  Accesors handled by metric (see Photonic::Retarded::Metric, inherited from Photonic::Geometry)

• previousState currentState nextState

  The n-1-th, n-th and n+1-th Haydock states; a complex vector for each reciprocal wavevector

• 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

• next_c

  The n+1-th c Haydock coefficient

• previous_g current_g next_g

  The n-1-th n-th and n+1-th g Haydock coefficients

• iteration

  Number of completed iterations

METHODS

• iterate

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