pions_s.h

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#ifndef PIONS_S_H
#define PIONS_S_H
 
#define NUM_STAG_PROPS   8
#define NUM_STAG_PIONS   16
 
 
#include "meas/hadron/hadron_corr_s.h"
#include "meas/hadron/stag_propShift_s.h"
 
namespace Chroma {
 
/*
 
This is code to compute all 16 pseudoscalars 
using staggered fermions.
 
*/
 
  class staggered_hadron_corr ; 
 
  class staggered_pions  : public staggered_hadron_corr
  {
 
 
  public :
    void compute(multi1d<LatticeStaggeredPropagator>& quark_props,
                 int j_decay) ;
 
 
    staggered_pions(int t_len, 
                    const multi1d<LatticeColorMatrix> & uin,
                    Stag_shift_option type_of_shift_in = SYM_GAUGE_INVAR)  
      : staggered_hadron_corr(t_len,no_pions,uin,type_of_shift_in)
      {
        outer_tag = "Pseudoscalar"  ; 
        inner_tag = "Pi" ; 
 
        tag_names.resize(no_pions) ; 
        for(int i = 0 ; i <  no_pions ; ++i ) 
        {
          std::ostringstream tag;
          tag << "re_pion" << i;
          tag_names[i] = tag.str() ; 
        }
 
      }
 
    virtual ~staggered_pions()
      {
      }
 
 
  protected:
 
  private :
    static const int no_pions = 16 ; 
 
  } ;
 
 
}  // end namespace Chroma
 
 
#endif