eoprec_ovdwf_fermact_array_w.h

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// -*- C++ -*-
/*! \file
 *  \brief 4D style even-odd preconditioned Overlap-DWF (Borici) action
 */
 
#ifndef __prec_ovdwf_fermact_array_w_h__
#define __prec_ovdwf_fermact_array_w_h__
 
#include "actions/ferm/fermacts/eoprec_dwf_fermact_base_array_w.h"
 
 
namespace Chroma
{
  //! Name and registration
  namespace EvenOddPrecOvDWFermActArrayEnv
  {
    extern const std::string name;
    bool registerAll();
  }
  
 
  //! Params for DWF
  struct EvenOddPrecOvDWFermActArrayParams
  {
    EvenOddPrecOvDWFermActArrayParams(XMLReader& in, const std::string& path);
    
    Real OverMass;
    Real Mass;
    Real a5;
    int  N5;
  };
 
 
  // Reader/writers
  void read(XMLReader& xml, const std::string& path, EvenOddPrecOvDWFermActArrayParams& param);
  void write(XMLWriter& xml, const std::string& path, const EvenOddPrecOvDWFermActArrayParams& param);
 
 
  //! 4D style even-odd preconditioned Overlap-DWF (Borici) action
  /*! \ingroup fermacts
   *
   * 4D style even-odd preconditioned Overlap-DWF (Borici) action
   * Follows notes of Brower (10/2003)
   *
   * Hopefully, the conventions used here
   * are specified in Phys.Rev.D63:094505,2001 (hep-lat/0005002).
   */
  class EvenOddPrecOvDWFermActArray : public EvenOddPrecDWFermActBaseArray<LatticeFermion, 
                                   multi1d<LatticeColorMatrix>, multi1d<LatticeColorMatrix> >
  {
  public:
    // Typedefs to save typing
    typedef LatticeFermion               T;
    typedef multi1d<LatticeColorMatrix>  P;
    typedef multi1d<LatticeColorMatrix>  Q;
 
    //! General FermBC
    EvenOddPrecOvDWFermActArray(Handle< CreateFermState<T,P,Q> > cfs_, 
                                const Real& OverMass_, const Real& Mass_, int N5_) : 
      cfs(cfs_), OverMass(OverMass_), Mass(Mass_), N5(N5_) 
      {
        a5=1;
        QDPIO::cout << "Construct EvenOddPrecOvDWFermActArray: OverMass = " << OverMass 
                    << "  Mass = " << Mass 
                    << "  N5 = " << N5 
                    << "  a5 = " << a5 
                    << std::endl;
      }
 
    //! General FermBC
    EvenOddPrecOvDWFermActArray(Handle< CreateFermState<T,P,Q> > cfs_, 
                                const EvenOddPrecOvDWFermActArrayParams& param) :
      cfs(cfs_), OverMass(param.OverMass), Mass(param.Mass), a5(param.a5), N5(param.N5) {}
 
    //! Copy constructor
    EvenOddPrecOvDWFermActArray(const EvenOddPrecOvDWFermActArray& a) : 
      cfs(a.cfs), OverMass(a.OverMass), Mass(a.Mass), a5(a.a5), N5(a.N5) {}
 
    //! Length of DW flavor index/space
    int size() const {return N5;}
 
    //! Return the quark mass
    Real getQuarkMass() const {return Mass;}
 
    //! Produce an unpreconditioned linear operator for this action with arbitrary quark mass
    UnprecDWLikeLinOpBaseArray<T,P,Q>* unprecLinOp(Handle< FermState<T,P,Q> > state, 
                                                   const Real& m_q) const;
 
    //! Produce an even-odd preconditioned linear operator for this action with arbitrary quark mass
    EvenOddPrecDWLikeLinOpBaseArray<T,P,Q>* precLinOp(Handle< FermState<T,P,Q> > state, 
                                                      const Real& m_q) const;
 
    //! Destructor is automatic
    ~EvenOddPrecOvDWFermActArray() {}
 
  protected:
    //! Return the fermion BC object for this action
    const CreateFermState<T,P,Q>& getCreateState() const {return *cfs;}
 
    //! Partial constructor
    EvenOddPrecOvDWFermActArray() {}
    //! Hide =
    void operator=(const EvenOddPrecOvDWFermActArray& a) {}
 
  private:
    Handle< CreateFermState<T,P,Q> >  cfs;
    Real OverMass;
    Real Mass;
    Real a5;
    int  N5;
  };
 
}
 
#endif