TensorL.h

/*
   CheMPS2: a spin-adapted implementation of DMRG for ab initio quantum chemistry
   Copyright (C) 2013-2016 Sebastian Wouters

   This program 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 2 of the License, or
   (at your option) any later version.

   This program 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 this program; if not, write to the Free Software Foundation, Inc.,
   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/

#ifndef TENSORL_CHEMPS2_H
#define TENSORL_CHEMPS2_H

#include "TensorT.h"
#include "TensorO.h"

namespace CheMPS2{
   class TensorL : public TensorOperator{

      public:


         TensorL( const int boundary_index, const int Idiff, const bool moving_right, const SyBookkeeper * book_up, const SyBookkeeper * book_down );

         virtual ~TensorL();


         void create( TensorT * mps_tensor );


         void create( TensorT * mps_tensor_up, TensorT * mps_tensor_down, TensorO * previous, double * workmem );

      private:

         void create_right( const int ikappa, TensorT * mps_tensor_up, TensorT * mps_tensor_down, TensorO * previous, double * workmem );

         void create_left( const int ikappa, TensorT * mps_tensor_up, TensorT * mps_tensor_down, TensorO * previous, double * workmem );

   };
}

#endif