WeakEquationSchrodinger.h
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	#ifndef WEAK_EQUATION_SCHRODINGER_H
	#define WEAK_EQUATION_SCHRODINGER_H

	#include <set>
	#include <string>

	#include "WeakEquation.h"

	namespace ATC{

	/**
	* @class WeakEquationSchrodinger
	* @brief Schrodinger equation
	* -hbar^2 /2 1/m^* psi,xx + phi psi = E psi
	* (-c*B^T B + phi N^T N) psi = E N^T N psi
	*/

	class WeakEquationSchrodinger : public WeakEquation {

	public:

	// constructor
	WeakEquationSchrodinger();

	// destructor
	virtual ~WeakEquationSchrodinger();

	/** RHS stiffness matrix */
	virtual bool has_BB_tangent_coefficients(void) const {return true;}
	virtual void BB_tangent_coefficients(const FieldName field,
	const FIELD_MATS & fields,
	const Material * material,
	DENS_MAT &coefs) const;
	virtual bool has_NN_tangent_coefficients(void) const {return true;}
	virtual void NN_tangent_coefficients(const FieldName field,
	const FIELD_MATS & fields,
	const Material * material,
	DENS_MAT &coefs) const;

	/** necessary interfaces */
	virtual std::set<std::string> needs_material_functions(void) const
	{
	std::set<std::string> needs;
	needs.insert("inv_effective_mass");
	needs.insert("band_edge_potential");
	return needs;
	}

	};

	};
	#endif