perturbations_ode_system.hpp

Go to the documentation of this file.

/*
 * This file is part of BubbleProfiler.
 *
 * BubbleProfiler is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * BubbleProfiler is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with BubbleProfiler.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef BUBBLEPROFILER_PERTURBATIONS_ODE_SYSTEM_HPP_INCLUDED
#define BUBBLEPROFILER_PERTURBATIONS_ODE_SYSTEM_HPP_INCLUDED

#include <Eigen/Core>

namespace BubbleProfiler {

class Field_profiles;
class Potential;

class Perturbations_ODE_system {
public:
   Perturbations_ODE_system(Potential& potential_, Field_profiles& profiles_,
                            int n_spacetime_dimensions_);

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

private:
   int n_fields{1};
   int n_spacetime_dimensions{3};
   Potential* potential{nullptr};
   Field_profiles* profiles{nullptr};

   bool is_finite(const Eigen::VectorXd&) const;
   Eigen::VectorXd calculate_inhomogeneities(double) const;
   Eigen::MatrixXd calculate_mass_matrix(double) const;
};

} // namespace BubbleProfiler

#endif