Class implementing the system of ODEs obeyed by profile perturbations. More...

#include <perturbations_ode_system.hpp>

Collaboration diagram for BubbleProfiler::Perturbations_ODE_system:

Public Member Functions
	Perturbations_ODE_system (Potential &potential_, Field_profiles &profiles_, int n_spacetime_dimensions_)
	Constructs the system of ODEs for the given potential. More...

void	operator() (const Eigen::VectorXd &eps, Eigen::VectorXd &depsdr, double r) const
	Calculate the derivatives of the perturbations. More...

Private Member Functions
bool	is_finite (const Eigen::VectorXd &) const

Eigen::VectorXd	calculate_inhomogeneities (double) const

Eigen::MatrixXd	calculate_mass_matrix (double) const

Private Attributes
int	n_fields {1}

int	n_spacetime_dimensions {3}

Potential *	potential {nullptr}

Field_profiles *	profiles {nullptr}

Detailed Description

Class implementing the system of ODEs obeyed by profile perturbations.

This class provides for the calculation of the first-order system of ODEs obeyed by the perturbations to the field profiles, and their first derivatives, that arise when using the perturbative method.

Definition at line 36 of file perturbations_ode_system.hpp.

Constructor & Destructor Documentation

BubbleProfiler::Perturbations_ODE_system::Perturbations_ODE_system	(	Potential &	potential_,
		Field_profiles &	profiles_,
		int	n_spacetime_dimensions_
	)

Constructs the system of ODEs for the given potential.

Parameters

[in]	potential_	the potential to calculate profile perturbations for
[in]	profiles_	the current estimate for the bubble profile for which perturbations are to be computed
[in]	n_spacetime_dimensions_	the number of spacetime dimensions

Definition at line 28 of file perturbations_ode_system.cpp.

Member Function Documentation

Eigen::VectorXd BubbleProfiler::Perturbations_ODE_system::calculate_inhomogeneities ( double rho ) const

private

Definition at line 85 of file perturbations_ode_system.cpp.

References BubbleProfiler::Field_profiles::derivative_at(), BubbleProfiler::Field_profiles::evaluate_at(), n_fields, n_spacetime_dimensions, BubbleProfiler::Potential::partial(), potential, and profiles.

Referenced by operator()().

Eigen::MatrixXd BubbleProfiler::Perturbations_ODE_system::calculate_mass_matrix ( double rho ) const

private

Definition at line 103 of file perturbations_ode_system.cpp.

References BubbleProfiler::Field_profiles::evaluate_at(), n_fields, BubbleProfiler::Potential::partial(), potential, and profiles.

Referenced by operator()().

bool BubbleProfiler::Perturbations_ODE_system::is_finite ( const Eigen::VectorXd & x ) const

private

Definition at line 70 of file perturbations_ode_system.cpp.

Referenced by operator()().

void BubbleProfiler::Perturbations_ODE_system::operator()	(	const Eigen::VectorXd &	eps,
		Eigen::VectorXd &	depsdr,
		double	r
	)		const

Calculate the derivatives of the perturbations.

The state vector eps is assumed to contain the values of the perturbations in the first n_fields entries, and the values of their first derivatives in the remaining n_fields entries.

Parameters

[in]	eps	the values of the perturbations and their derivatives
[out]	depsdr	the values of the derivatives of the perturbations
[in]	r	the value of the radial coordinate

Definition at line 38 of file perturbations_ode_system.cpp.

References calculate_inhomogeneities(), calculate_mass_matrix(), is_finite(), n_fields, and n_spacetime_dimensions.