unprec_graphene_fermact_w.h

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// -*- C++ -*-
/*! \file
 *  \brief Unpreconditioned Graphene fermion action.
 *
 * This formulation follows Borici's variant of Creutz's graphene
 * fermion construction. Borici's variant is described in
 * arXiv:0712.4401 and Cruetz's original construction is described
 * in arXiv:0712.1201
 */
 
#ifndef __unprec_graphene_fermact_w_h__
#define __unprec_graphene_fermact_w_h__
 
#include "unprec_wilstype_fermact_w.h"
#include "actions/ferm/fermacts/wilson_fermact_params_w.h"
#include "actions/ferm/linop/lgherm_w.h"
#include "io/aniso_io.h"
 
 
namespace Chroma
{
  //! Name and registration
  namespace UnprecGrapheneFermActEnv
  {
    extern const std::string name;
    bool registerAll();
  }
 
 
  //! Unpreconditioned Graphene fermion action
  /*! \ingroup fermacts
   *
   * Supports creation and application for fermion actions
   */
  class UnprecGrapheneFermAct : public UnprecWilsonTypeFermAct<LatticeFermion, 
                              multi1d<LatticeColorMatrix>, multi1d<LatticeColorMatrix> >
  {
  public:
    // Typedefs to save typing
    typedef LatticeFermion               T;
    typedef multi1d<LatticeColorMatrix>  P;
    typedef multi1d<LatticeColorMatrix>  Q;
 
    //! General FermBC
    UnprecGrapheneFermAct(Handle< CreateFermState<T,P,Q> > cfs_, 
                          const Real& Mass_) : 
      cfs(cfs_) {param.Mass=Mass_;}
 
    //! General FermBC
    UnprecGrapheneFermAct(Handle< CreateFermState<T,P,Q> > cfs_, 
                          const WilsonFermActParams& param_) : 
      cfs(cfs_), param(param_) {}
 
    //! Copy constructor
    UnprecGrapheneFermAct(const UnprecGrapheneFermAct& a) : 
      cfs(a.cfs), param(a.param) {}
 
    //! Assignment
    UnprecGrapheneFermAct& operator=(const UnprecGrapheneFermAct& a)
      {cfs=a.cfs; param=a.param; return *this;}
 
    //! Produce a linear operator for this action
    UnprecLinearOperator<T,P,Q>* linOp(Handle< FermState<T,P,Q> > state) const;
 
    //! Produce the gamma_5 hermitian operator H_w
    LinearOperator<T>* hermitianLinOp(Handle< FermState<T,P,Q> > state) const 
      { 
        return new lgherm<T>(linOp(state));
      }
 
    //! Destructor is automatic
    ~UnprecGrapheneFermAct() {}
 
  protected:
    //! Return the fermion create state object for this action
    const CreateFermState<T,P,Q>& getCreateState() const {return *cfs;}
 
  private:
    UnprecGrapheneFermAct() {} //hide default constructor
   
  private:
    Handle< CreateFermState<T,P,Q> >  cfs;
    WilsonFermActParams param;
  };
 
}
 
#endif