Implemented measurement of mass correlators.

diff --git a/u1casc-ordinary/obs_corr.hpp b/u1casc-ordinary/obs_corr.hpp
new file mode 100644 (file)
index 0000000..548d4ef
--- /dev/null
+++ b/u1casc-ordinary/obs_corr.hpp
@@ -0,0 +1,185 @@
+#ifndef OBS_CORR_HPP
+#define OBS_CORR_HPP
+
+#include "latlib/o815/o815.h"
+
+#include "latlib/writeout.h"
+
+#include "latlib/obstat.hpp"
+
+#include <iostream>
+#include <complex>
+
+#include <cmath>
+
+#define U1 0
+#define U2 1
+#define F1 2
+#define F2 3
+
+using namespace std;
+
+class obs_corr : public o815::obs {
+
+public:
+  obs_corr(o815 *_O815);
+  
+private:
+  void _start();
+  void _meas(bool loadedobs, const int& nthmeas);
+  void _finish();
+
+  void corrCompute();
+  static complex<double> effMass(vector < complex<double> > *preCalculated, vector< complex<double> > *excludedMeas, int nmeas, void *para);
+  static void preEffMass(vector< vector < complex<double> > > *allVals, vector < complex<double> > *preCalculated, void *para);
+
+  sim *Sim;
+  obstat< complex<double>, complex<double>  > oC[4];
+  obstat< complex<double>, complex<double>  > oD[4];
+
+  int spatialV;
+
+  complex<double> *OM[4];
+};
+
+obs_corr::obs_corr(o815 *_O815) : o815::obs("corr", 
+                                           _O815->paraQ->getParaNames() + 
+                                           "tsep"
+                                           ":u1_real:u1_imag:u1_abs:u1_effmass:u1_effmass_err"
+                                           ":u2_real:u2_imag:u2_abs:u2_effmass:u2_effmass_err"
+                                           ":f1_real:f1_imag:f1_abs:f1_effmass:f1_effmass_err"
+                                           ":f2_real:f2_imag:f2_abs:f2_effmass:f2_effmass_err", 
+                                           _O815, 4*sizeof(complex<double>)*(_O815->comargs.lsize[1]/2+1) ) {
+  for (int ivar = 0; ivar<4; ivar++)
+    OM[ivar]  = (complex<double>*)( obsMem + ivar*sizeof(complex<double>)*( _O815->comargs.lsize[1]/2 + 1 ) );
+  
+  Sim = (sim*)O815->Sim;
+  spatialV = O815->comargs.lsize[0] * O815->comargs.lsize[0] * O815->comargs.lsize[0];
+}
+
+void obs_corr::_start() {
+  //*out << "OBS_test: start" << endl;
+};
+
+void obs_corr::_meas(bool loadedobs, const int& nthmeas) {
+  if (!loadedobs)
+    corrCompute();
+
+  oC[U1].addMeas( OM[U1], O815->comargs.lsize[1]/2+1 );
+  oC[U2].addMeas( OM[U2], O815->comargs.lsize[1]/2+1 );
+  oC[F1].addMeas( OM[F1], O815->comargs.lsize[1]/2+1 );
+  oC[F2].addMeas( OM[F2], O815->comargs.lsize[1]/2+1 );
+};
+
+void obs_corr::_finish() {
+  int compid_corr[O815->comargs.lsize[1]/2][4];
+  int compid_effmass[O815->comargs.lsize[1]/2-1][4];
+
+  for (int itsep = 0; itsep < O815->comargs.lsize[1]/2; itsep++)
+    for (int icorr = 0; icorr < 4; icorr++)
+      compid_corr[itsep][icorr] = oC[icorr].computeEasy(itsep);
+
+  
+  for (int icorr = 0; icorr < 4; icorr++) {
+    for (int itsep = 0; itsep < O815->comargs.lsize[1]/2-1; itsep++) {
+      pair<int,int> effmasspass( itsep, O815->comargs.lsize[1]/2 );
+      compid_effmass[itsep][icorr] = oC[icorr].computeJack(obs_corr::preEffMass, obs_corr::effMass, &effmasspass);
+    }
+  }
+
+  for (int itsep = 0; itsep < O815->comargs.lsize[1]/2; itsep++) {
+    *out << O815->paraQ->getParaVals();
+    *out << "\t" << itsep;
+    for (int icorr = 0; icorr < 4; icorr++) {
+      *out << "\t" << real( oC[icorr].getMean(compid_corr[itsep][icorr]) )
+          << "\t" << imag( oC[icorr].getMean(compid_corr[itsep][icorr]) )
+          << "\t" << abs ( oC[icorr].getMean(compid_corr[itsep][icorr]) );
+      
+
+      if ( itsep < O815->comargs.lsize[1]/2-1 )
+       *out << "\t" << real( oC[icorr].getMean(compid_effmass[itsep][icorr]) )
+            << "\t" << real( oC[icorr].getErr (compid_effmass[itsep][icorr]) );
+      else
+       *out << "\t" << NAN << "\t" << NAN;
+    }
+    *out << endl;
+  }
+
+  for (int icorr = 0; icorr < 4; icorr++) {
+    oC[icorr].reset();
+    oD[icorr].reset();
+  }
+};
+
+void obs_corr::corrCompute()
+{
+  complex<double> phislice[4][O815->comargs.lsize[1]];
+  
+  OM[U1][O815->comargs.lsize[1]/2] = 0;
+  OM[U2][O815->comargs.lsize[1]/2] = 0;
+  OM[F1][O815->comargs.lsize[1]/2] = 0;
+  OM[F2][O815->comargs.lsize[1]/2] = 0;
+
+  for (int it = 0; it < O815->comargs.lsize[1]; it++) {
+    phislice[U1][it] = 0;
+    phislice[U2][it] = 0;
+    phislice[F1][it] = 0;
+    phislice[F2][it] = 0;
+    
+    for (int ix = 0; ix < spatialV; ix++) {
+      phislice[U1][it] += conj(Sim->phi[ 0*Sim->lsize4 + it*spatialV + ix ]) * Sim->phi[ 0*Sim->lsize4 + it*spatialV + ix ];
+      phislice[U2][it] += conj(Sim->phi[ 1*Sim->lsize4 + it*spatialV + ix ]) * Sim->phi[ 1*Sim->lsize4 + it*spatialV + ix ];
+      phislice[F1][it] += Sim->phi[ 0*Sim->lsize4 + it*spatialV + ix ];
+      phislice[F2][it] += Sim->phi[ 1*Sim->lsize4 + it*spatialV + ix ];
+    }
+    phislice[U1][it] /= spatialV;
+    phislice[U2][it] /= spatialV;
+    phislice[F1][it] /= spatialV;
+    phislice[F2][it] /= spatialV;
+
+    OM[U1][O815->comargs.lsize[1]/2] += phislice[U1][it];
+    OM[U2][O815->comargs.lsize[1]/2] += phislice[U2][it];
+    OM[F1][O815->comargs.lsize[1]/2] += phislice[F1][it];
+    OM[F2][O815->comargs.lsize[1]/2] += phislice[F2][it];
+  }
+
+  for (int icorr = 0; icorr < 4; icorr++) {
+    for (int itsep = 0; itsep < O815->comargs.lsize[1]/2; itsep++) {
+      OM[icorr][itsep] = 0;
+
+      for (int it = 0; it < O815->comargs.lsize[1]; it++)
+       OM[icorr][itsep] += phislice[icorr][ (it+itsep)%O815->comargs.lsize[1] ] * conj( phislice[icorr][it] );
+      
+      OM[icorr][itsep] /= O815->comargs.lsize[1];
+    }
+
+    OM[icorr][O815->comargs.lsize[1]/2] /= O815->comargs.lsize[1];
+  }
+}
+
+void obs_corr::preEffMass(vector< vector < complex<double> > > *allVals, vector < complex<double> > *preCalculated, void *para) {
+  pair<int,int> *myparas = (pair<int,int>*)para;
+  
+  preCalculated->push_back(0);
+  preCalculated->push_back(0);
+  preCalculated->push_back(0);
+
+  for(vector< vector< complex<double> > >::iterator valIt = allVals->begin(); valIt != allVals->end(); ++valIt) {
+    (*preCalculated)[0] += (*valIt)[myparas->first];
+    (*preCalculated)[1] += (*valIt)[myparas->first+1];
+    (*preCalculated)[2] += (*valIt)[myparas->second];
+  }
+}
+
+complex<double> obs_corr::effMass(vector < complex<double> > *preCalculated, vector< complex<double> > *excludedMeas, int nmeas, void *para) {
+  pair<int,int> *myparas = (pair<int,int>*)para;
+
+  double disconnected = norm( ( (*preCalculated)[2] - (*excludedMeas)[myparas->second] ) / (complex<double>)(nmeas-1) );
+  
+  return std::log( abs( 
+                      ( ( (*preCalculated)[0] - (*excludedMeas)[myparas->first] ) / (complex<double>)(nmeas-1) - disconnected ) / 
+                      ( ( (*preCalculated)[1] - (*excludedMeas)[myparas->first+1] ) / (complex<double>)(nmeas-1) - disconnected ) 
+                       ) );
+}
+
+#endif

diff --git a/u1casc-ordinary/u1casc-ordinary.cpp b/u1casc-ordinary/u1casc-ordinary.cpp
index 554f7e4281d1ec271614e25f46d340b130ed6d1b..63ef33b6dd09d53d4aa16409ce701f046600f00b 100644 (file)
--- a/u1casc-ordinary/u1casc-ordinary.cpp
+++ b/u1casc-ordinary/u1casc-ordinary.cpp
@@ -12,6 +12,7 @@ sim *Sim;
 
 #include "obs_phi2.hpp"
 #include "obs_plaq.hpp"
+#include "obs_corr.hpp"
 
 o815::comoption specOps[] = {
   { "kappaone", required_argument, NULL, 'r', "set inverse mass kappa_1", "min:max:inc" },
@@ -70,6 +71,10 @@ void parseLonelyArgs()
       *O815->out->log << "MASTER: registered observable: plaq" << endl << flush;
       O815->observables.push_back(new obs_plaq(O815));
     }
+    else if ( strcmp(*lonit, "corr") == 0 ) {
+      *O815->out->log << "MASTER: registered observable: corr" << endl << flush;
+      O815->observables.push_back(new obs_corr(O815));
+    }
   }
 }