92 lines
3.5 KiB
C++
92 lines
3.5 KiB
C++
/**********************************************************
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This software is part of J.-S. Caux's ABACUS library.
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Copyright (c) J.-S. Caux.
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-----------------------------------------------------------
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File: LiebLin_DSF_tester.cc
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Purpose: allows for Ix2 manipulations (user-prompted) for LiebLin gas
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***********************************************************/
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#include "ABACUS.h"
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using namespace std;
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using namespace ABACUS;
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int main(int argc, char* argv[])
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{
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if (argc != 6) { // provide some info
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cout << endl << "Welcome to ABACUS\t(copyright J.-S. Caux)." << endl;
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cout << endl << "Usage of LiebLin_DSF_tester executable: " << endl;
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cout << endl << "Provide the following arguments:" << endl << endl;
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cout << "char whichDSF \t\t Which structure factor should be calculated ? Options are: d for rho rho, g for psi psi{dagger}, o for psi{dagger} psi" << endl;
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cout << "DP c_int \t\t Value of the interaction parameter: use positive real values only" << endl;
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cout << "DP L \t\t\t Length of the system: use positive real values only" << endl;
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cout << "int N \t\t\t Number of particles: use positive integer values only" << endl;
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cout << "DP kBT \t\t Temperature (positive only of course)" << endl;
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cout << endl << "EXAMPLE: " << endl << endl;
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cout << "LiebLin_DSF_tester d 1.0 100.0 100 0.56 " << endl << endl;
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}
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else { // (argc == 6), correct nr of arguments
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char whichDSF = *argv[1];
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DP c_int = atof(argv[2]);
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DP L = atof(argv[3]);
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int N = atoi(argv[4]);
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DP kBT = atof(argv[5]);
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//if (whichDSF != 'd') ABACUSerror("Other options not implemented yet in finite T Scan_LiebLin");
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// Delta is the number of sites involved in the smoothing of the entropy
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//int Delta = int(sqrt(N))/2;//6;//N/20;
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// Construct the finite-size saddle-point state:
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//LiebLin_Bethe_State spstate = Canonical_Saddle_Point_State (c_int, L, N, kBT, Delta);
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LiebLin_Bethe_State spstate = Canonical_Saddle_Point_State (c_int, L, N, kBT);
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spstate.Compute_All(true);
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LiebLin_Bethe_State estate = spstate;
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if (whichDSF == 'o') estate = Remove_Particle_at_Center (spstate);
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else if (whichDSF == 'g') estate = Add_Particle_at_Center (spstate);
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if (whichDSF != 'd') estate.Compute_All(true);
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cout << estate << endl;
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Vect<int> OriginIx2 = estate.Ix2;
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int Ix2old, Ix2new;
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int again = 0;
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string label_req;
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do {
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//cout << "Substitute Ix2: which for which ?" << endl;
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//cin >> Ix2old >> Ix2new;
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//for (int i = 0; i < estate.N; ++i) if (estate.Ix2[i] == Ix2old) estate.Ix2[i] = Ix2new;
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//estate.Ix2.QuickSort();
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cout << "Which label should the exc state be set to?" << endl;
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cin >> label_req;
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estate.Set_to_Label(label_req, OriginIx2);
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estate.Compute_All(false);
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cout << spstate << endl;
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cout << estate;
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if (whichDSF == 'd')
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cout << setprecision(16) << "estate.E - spstate.E = " << estate.E - spstate.E << "\tME = " << real(exp(ln_Density_ME(spstate, estate))) << endl;
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else if (whichDSF == 'o')
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cout << setprecision(16) << "estate.E - spstate.E = " << estate.E - spstate.E << "\tME = " << real(exp(ln_Psi_ME(estate, spstate))) << endl;
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else if (whichDSF == 'g')
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cout << setprecision(16) << "estate.E - spstate.E = " << estate.E - spstate.E << "\tME = " << real(exp(ln_Psi_ME(spstate, estate))) << endl;
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//cout << "Another try ? (1 == yes, 0 == no)" << endl;
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again = 1;
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cin >> again;
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} while (again != 0);
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}
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return(0);
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}
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