CSVMCUpdatePbyP.h

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//////////////////////////////////////////////////////////////////////////////////////
// This file is distributed under the University of Illinois/NCSA Open Source License.
// See LICENSE file in top directory for details.
//
// Copyright (c) 2016 Jeongnim Kim and QMCPACK developers.
//
// File developed by: Jeongnim Kim, jeongnim.kim@gmail.com, University of Illinois at Urbana-Champaign
//                    Jeremy McMinnis, jmcminis@gmail.com, University of Illinois at Urbana-Champaign
//                    Raymond Clay III, j.k.rofling@gmail.com, Lawrence Livermore National Laboratory
//                    Mark A. Berrill, berrillma@ornl.gov, Oak Ridge National Laboratory
//
// File created by: Jeongnim Kim, jeongnim.kim@gmail.com, University of Illinois at Urbana-Champaign
//////////////////////////////////////////////////////////////////////////////////////


#ifndef QMCPLUSPLUS_CS_VMC_UPDATEPBYP_H
#define QMCPLUSPLUS_CS_VMC_UPDATEPBYP_H
#include "QMCDrivers/CorrelatedSampling/CSUpdateBase.h"
namespace qmcplusplus
{
/** @ingroup QMCDrivers MultiplePsi ParticleByParticle
 * @brief Implements the VMC algorithm
 */
class CSVMCUpdatePbyP : public CSUpdateBase
{
public:
  /// Constructor.
  CSVMCUpdatePbyP(MCWalkerConfiguration& w,
                  std::vector<TrialWaveFunction*>& psi,
                  std::vector<QMCHamiltonian*>& h,
                  RandomBase<FullPrecRealType>& rg);

  ~CSVMCUpdatePbyP() override;

  void advanceWalker(Walker_t& thisWalker, bool recompute) override;

private:
};
/** @ingroup QMCDrivers MultiplePsi ParticleByParticle
 *
 * @brief Implements the VMC algorithm with drift.  
 */
class CSVMCUpdatePbyPWithDriftFast : public CSUpdateBase
{
public:
  /// Constructor.
  CSVMCUpdatePbyPWithDriftFast(MCWalkerConfiguration& w,
                               std::vector<TrialWaveFunction*>& psi,
                               std::vector<QMCHamiltonian*>& h,
                               RandomBase<FullPrecRealType>& rg);

  ~CSVMCUpdatePbyPWithDriftFast() override;

  void advanceWalker(Walker_t& thisWalker, bool recompute) override;

private:
};
} // namespace qmcplusplus

#endif