KineticTerm.hpp

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#ifndef SPINFULLFILLER_KINETICTERM_HPP
#define SPINFULLFILLER_KINETICTERM_HPP

#include "../Hamiltonian.hpp"
#include "../EnumGamma.hpp"

namespace Spinfull
{

class KineticTerm
{
public:
    template <class T>
    static void Fill(Hamiltonian<T> &ham, double t_integral,int i, int j)
    {
        ham.InsertBlock(Gamma::UpPlus, i, Gamma::UpMinus, j, -0.5 * t_integral);
        ham.InsertBlock(Gamma::DownPlus, i, Gamma::DownMinus, j, -0.5 * t_integral);
        ham.InsertBlock(Gamma::UpPlus, j, Gamma::UpMinus, i, -0.5 * t_integral);
        ham.InsertBlock(Gamma::DownPlus, j, Gamma::DownMinus, i, -0.5 * t_integral);
    }
    
    static const std::string name;
    static constexpr size_t locality{2};
};

const std::string KineticTerm::name{"t_integral"};

}

#endif