source: src/Fragmentation/Summation/Containers/VMGData.cpp@ e2925fd

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Last change on this file since e2925fd was e2925fd, checked in by Frederik Heber <heber@…>, 12 years ago

Split long-range calculations into two parts to overcome E-N-potential problems.

The general problem is that smeared-out nuclei charges cannot interact with
electron charge densities as they always overlap, hence we always make a large
error. The idea then is - as the potential energy is symmetric both
densities - to flip from N-E to E-N, i.\,e. to take the electron potential and
evaluate at nuclei positions instead of smeared-out nuclei charges with
eletronic charge distribution. However, then we need to make two calculations
for the four contributions: E-E, E-N and N-N, N-E (=E-N).

  • new enums SampleParticles_t eventually tells InterfaceVMGJob whether to sample the nuclei charges onto the grid or not.
  • TreatGrid_t tells InterfaceVMGJob whether to actually add the electronic charge onto the grid (this was added but is actually not required anymore).
  • FragmentationAutomationAction::performCall() now creates twice as many long-range jobs. This requires two variables in VMGData for storing integrated long-range energy: electron_long, nuclei_long, as both calculations are combined into a single VMGData instance per fragment.
  • Summation of long-range contributions is split into three instead of formerly two parts: electron (E-E), nuclei (N-N), and mixed (E-N). This allows to easierly check their cancellation. This needs new member in fusion map and name in printKeyNames.
  • naturally, the enums have to be passed a long way: VMGFragmentController, VMGJob, VMGData.
  • VMGData now has serialization version 1 due to new entry.
  • we enhanced documentation in FragmentationLongRangeResults::operator()() of how and what is summed per level.
  • FIX: InterfaceVMGJob::ImportRightHandSide() subtracted grid instead of adding it. Now, we set correct sign of electron charge distribution in MPQC.
  • TESTFIX: Regression test AnalyseFragmentResults now has short- and long-range part. Long-range part is only diff'ed when the compiled code has the capabilities.
  • Property mode set to 100644
File size: 1.4 KB
Line 
1/*
2 * Project: MoleCuilder
3 * Description: creates and alters molecular systems
4 * Copyright (C) 2012 University of Bonn. All rights reserved.
5 *
6 *
7 * This file is part of MoleCuilder.
8 *
9 * MoleCuilder is free software: you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation, either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * MoleCuilder is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with MoleCuilder. If not, see <http://www.gnu.org/licenses/>.
21 */
22
23/*
24 * VMGData.cpp
25 *
26 * Created on: Aug 6, 2012
27 * Author: heber
28 */
29
30
31// include config.h
32#ifdef HAVE_CONFIG_H
33#include <config.h>
34#endif
35
36#include "CodePatterns/MemDebug.hpp"
37
38#include "VMGData.hpp"
39
40#include <iostream>
41
42VMGData::VMGData(const SamplingGridProperties &_props) :
43 sampled_potential(_props),
44 nuclei_long(0.),
45 electron_long(0.)
46{}
47
48VMGData::VMGData()
49{}
50
51std::ostream & operator<<(std::ostream &ost, const VMGData &data)
52{
53 ost << "Nuclei long-Range energy: " << data.nuclei_long << std::endl;
54 ost << "Electron long-Range energy: " << data.electron_long << std::endl;
55 return ost;
56}
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