gauge_momentum_action< gauge_field > Class Template Reference

#include <gauge_field.h>

Inheritance diagram for gauge_momentum_action< gauge_field >:

Collaboration diagram for gauge_momentum_action< gauge_field >:

Public Types
using	gauge_field_type = gauge_field
	The underlying gauge field type.
using	gauge_mat = typename gauge_field::gauge_type
	The gauge matrix type.
using	momtype = SquareMatrix< N, Complex< hila::arithmetic_type< gauge_mat > > >
	The type of the momentum field.

Public Member Functions
	gauge_momentum_action (gauge_field &g)
	construct from a gauge field
	gauge_momentum_action (gauge_momentum_action &ga)
	construct a copy
double	action ()
	The gauge action.
void	draw_gaussian_fields ()
	Gaussian random momentum for each element.
void	backup_fields ()
	Make a copy of fields updated in a trajectory.
void	restore_backup ()
	Restore the previous backup.
void	step (double eps)
	Update the gauge field with momentum.
virtual void	force_step (double eps)
virtual void	force_step (double eps)
	Update the momentum with the gauge field.

Public Attributes
gauge_field &	gauge
	A reference to the gauge field.

Static Public Attributes
static constexpr int	N = gauge_mat::size
	The size of the gauge matrix.

Detailed Description

template<typename gauge_field>
class gauge_momentum_action< gauge_field >

The action of the canonical momentum of a gauge field. Momentum actions are a special case. It does not contain a force_step()-function. It contains a step()-function, which updates the momentum itself. It can be used as the lowest level of an integrator.

Definition at line 397 of file gauge_field.h.

Member Function Documentation

force_step()

virtual void action_base::force_step ( double  eps )

inlinevirtualinherited

Update the momentum with the derivative of the action term

Reimplemented in fermion_action< gauge_field, DIRAC_OP >, fermion_action< gauge_field, Hasenbusch_operator< DIRAC_OP > >, Hasenbusch_action_1< gauge_field, DIRAC_OP >, Hasenbusch_action_2< gauge_field, DIRAC_OP >, gauge_action< gauge_field >, and action_sum.

Definition at line 22 of file integrator.h.

step()

template<typename gauge_field >

void gauge_momentum_action< gauge_field >::step ( double  eps )

inlinevirtual

Update the gauge field with momentum.

A momentum action is also the lowest level of an integrator hierarchy and needs to define the an step to update the gauge field using the momentum

Reimplemented from integrator_base.

Definition at line 441 of file gauge_field.h.

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The documentation for this class was generated from the following file:

• gauge_field.h