mps-0.0.0
MatrixProductStatesinC++
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apply_local_operator_d.cc
1 // -*- mode: c++; fill-column: 80; c-basic-offset: 2; indent-tabs-mode: nil -*-
2 /*
3  Copyright (c) 2010 Juan Jose Garcia Ripoll
4 
5  Tensor is free software; you can redistribute it and/or modify it
6  under the terms of the GNU Library General Public License as published
7  by the Free Software Foundation; either version 2 of the License, or
8  (at your option) any later version.
9 
10  This program is distributed in the hope that it will be useful,
11  but WITHOUT ANY WARRANTY; without even the implied warranty of
12  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13  GNU Library General Public License for more details.
14 
15  You should have received a copy of the GNU General Public License along
16  with this program; if not, write to the Free Software Foundation, Inc.,
17  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18 */
19 
20 #include <mps/mps.h>
21 
22 namespace mps {
23 
24  using namespace tensor;
25 
26  const RMPS apply_local_operator(const RMPS &psi, const RTensor &op, index site)
27  {
28  RMPS output = psi;
29  output.at(site) = foldin(op, -1, psi[site], 1);
30  return output;
31  }
32 
33 } // namespace mps
34 
Real matrix product structure.
Definition: rmps.h:31
const RMPS apply_local_operator(const RMPS &psi, const RTensor &op, index site)
Apply a local operator on the given site.