added clock model

3 files changed, 175 insertions, 11 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 50bc708..b391bba 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -19,12 +19,16 @@ add_executable(wolff_dgm src/wolff_dgm.cpp ${CPPSOURCES} ${CSOURCES})
 add_executable(wolff_cgm src/wolff_cgm.cpp ${CPPSOURCES} ${CSOURCES})
 add_executable(wolff_3potts src/wolff_potts.cpp ${CPPSOURCES} ${CSOURCES})
 add_executable(wolff_4potts src/wolff_potts.cpp ${CPPSOURCES} ${CSOURCES})
+add_executable(wolff_3clock src/wolff_clock.cpp ${CPPSOURCES} ${CSOURCES})
+add_executable(wolff_5clock src/wolff_clock.cpp ${CPPSOURCES} ${CSOURCES})
 add_executable(wolff_planar src/wolff_On.cpp ${CPPSOURCES} ${CSOURCES})
 add_executable(wolff_heisenberg src/wolff_On.cpp ${CPPSOURCES} ${CSOURCES})
 add_executable(analyze_correlations src/analyze_correlations.cpp ${CPPSOURCES} ${CSOURCES})
 
 SET_TARGET_PROPERTIES(wolff_3potts PROPERTIES COMPILE_FLAGS "-DPOTTSQ=3")
 SET_TARGET_PROPERTIES(wolff_4potts PROPERTIES COMPILE_FLAGS "-DPOTTSQ=4")
+SET_TARGET_PROPERTIES(wolff_3clock PROPERTIES COMPILE_FLAGS "-DPOTTSQ=3")
+SET_TARGET_PROPERTIES(wolff_5clock PROPERTIES COMPILE_FLAGS "-DPOTTSQ=5")
 SET_TARGET_PROPERTIES(wolff_planar PROPERTIES COMPILE_FLAGS "-DN_COMP=2")
 SET_TARGET_PROPERTIES(wolff_heisenberg PROPERTIES COMPILE_FLAGS "-DN_COMP=3")
 
@@ -43,6 +47,8 @@ if (${GLUT} MATCHES "GLUT-NOTFOUND")
   target_link_libraries(wolff_cgm cblas gsl m)
   target_link_libraries(wolff_3potts cblas gsl m)
   target_link_libraries(wolff_4potts cblas gsl m)
+  target_link_libraries(wolff_3clock cblas gsl m)
+  target_link_libraries(wolff_5clock cblas gsl m)
   target_link_libraries(wolff_heisenberg cblas gsl m)
   target_link_libraries(wolff_planar cblas gsl m)
 else()
@@ -51,16 +57,20 @@ else()
   target_link_libraries(wolff_cgm cblas gsl m glut GL GLU)
   target_link_libraries(wolff_3potts cblas gsl m glut GL GLU)
   target_link_libraries(wolff_4potts cblas gsl m glut GL GLU)
+  target_link_libraries(wolff_3clock cblas gsl m glut GL GLU)
+  target_link_libraries(wolff_5clock cblas gsl m glut GL GLU)
   target_link_libraries(wolff_heisenberg cblas gsl m glut GL GLU)
   target_link_libraries(wolff_planar cblas gsl m glut GL GLU)
   target_compile_definitions(wolff_ising PUBLIC HAVE_GLUT)
   target_compile_definitions(wolff_dgm PUBLIC HAVE_GLUT)
   target_compile_definitions(wolff_cgm PUBLIC HAVE_GLUT)
   target_compile_definitions(wolff_3potts PUBLIC HAVE_GLUT)
+  target_compile_definitions(wolff_3clock PUBLIC HAVE_GLUT)
+  target_compile_definitions(wolff_5clock PUBLIC HAVE_GLUT)
   target_compile_definitions(wolff_4potts PUBLIC HAVE_GLUT)
   target_compile_definitions(wolff_planar PUBLIC HAVE_GLUT)
   target_compile_definitions(wolff_heisenberg PUBLIC HAVE_GLUT)
 endif()
 
-install(TARGETS wolff_ising wolff_dgm wolff_cgm wolff_3potts wolff_4potts wolff_heisenberg wolff_planar analyze_correlations DESTINATION bin)
+install(TARGETS wolff_ising wolff_dgm wolff_cgm wolff_3potts wolff_4potts wolff_3clock wolff_heisenberg wolff_planar analyze_correlations DESTINATION bin)
 
diff --git a/lib/dihedral.h b/lib/dihedral.h
index f547497..8238835 100644
--- a/lib/dihedral.h
+++ b/lib/dihedral.h
@@ -5,26 +5,26 @@
 #include "potts.h"
 
 template <class T, q_t q>
-struct dihedral2_t { bool is_reflection; T x; };
+struct dihedral_t { bool is_reflection; T x; };
 
 template <class T, q_t q>
-void init(dihedral2_t<T, q> *ptr) {
+void init(dihedral_t<T, q> *ptr) {
   ptr->is_reflection = false;
   ptr->x = (T)0;
 }
 
 template <class T, q_t q>
-dihedral2_t<T, q> copy(dihedral2_t<T, q> r) {
+dihedral_t<T, q> copy(dihedral_t<T, q> r) {
   return r;
 }
 
 template <class T, q_t q>
-void free_spin(dihedral2_t<T, q> r) {
+void free_spin(dihedral_t<T, q> r) {
   // do nothing!
 }
 
 template <q_t q>
-potts_t<q> act(dihedral2_t<q_t, q> r, potts_t<q> s) {
+potts_t<q> act(dihedral_t<q_t, q> r, potts_t<q> s) {
   potts_t<q> s2;
   if (r.is_reflection) {
     s2.x = ((q + r.x) - s.x) % q;
@@ -36,8 +36,8 @@ potts_t<q> act(dihedral2_t<q_t, q> r, potts_t<q> s) {
 }
 
 template <q_t q>
-dihedral2_t<q_t,q> act(dihedral2_t<q_t,q> r1, dihedral2_t<q_t,q> r2) {
-  dihedral2_t<q_t,q> r3;
+dihedral_t<q_t,q> act(dihedral_t<q_t,q> r1, dihedral_t<q_t,q> r2) {
+  dihedral_t<q_t,q> r3;
 
   if (r1.is_reflection) {
     r3.is_reflection = !(r2.is_reflection);
@@ -51,7 +51,7 @@ dihedral2_t<q_t,q> act(dihedral2_t<q_t,q> r1, dihedral2_t<q_t,q> r2) {
 }
 
 template <q_t q>
-potts_t<q> act_inverse(dihedral2_t<q_t,q> r, potts_t<q> s) {
+potts_t<q> act_inverse(dihedral_t<q_t,q> r, potts_t<q> s) {
   potts_t<q> s2;
   if (r.is_reflection) {
     s2.x = ((r.x + q) - s.x) % q;
@@ -63,8 +63,8 @@ potts_t<q> act_inverse(dihedral2_t<q_t,q> r, potts_t<q> s) {
 }
 
 template <q_t q>
-dihedral2_t<q_t, q> act_inverse(dihedral2_t<q_t,q> r1, dihedral2_t<q_t,q> r2) {
-  dihedral2_t<q_t,q> r3;
+dihedral_t<q_t, q> act_inverse(dihedral_t<q_t,q> r1, dihedral_t<q_t,q> r2) {
+  dihedral_t<q_t,q> r3;
 
   if (r1.is_reflection) {
     r3.is_reflection = !(r2.is_reflection);
diff --git a/src/wolff_clock.cpp b/src/wolff_clock.cpp
new file mode 100644
index 0000000..e186c44
--- /dev/null
+++ b/src/wolff_clock.cpp
@@ -0,0 +1,154 @@
+
+#include <getopt.h>
+
+#ifdef HAVE_GLUT
+#include <GL/glut.h>
+#endif
+
+// include your group and spin space
+#include <dihedral.h>
+#include <potts.h>
+#include <colors.h>
+
+// hack to speed things up considerably
+#define N_STATES POTTSQ
+#include <finite_states.h>
+
+// include wolff.h
+#include <rand.h>
+#include <wolff.h>
+
+typedef state_t <dihedral_t<q_t,POTTSQ>, potts_t<POTTSQ>> sim_t;
+
+int main(int argc, char *argv[]) {
+
+  count_t N = (count_t)1e4;
+
+  D_t D = 2;
+  L_t L = 128;
+  double T = 2.26918531421;
+  double *H_vec = (double *)calloc(MAX_Q, sizeof(double));
+
+  bool silent = false;
+  bool draw = false;
+  unsigned int window_size = 512;
+
+  int opt;
+  q_t H_ind = 0;
+
+  while ((opt = getopt(argc, argv, "N:D:L:T:H:sdw:")) != -1) {
+    switch (opt) {
+    case 'N': // number of steps
+      N = (count_t)atof(optarg);
+      break;
+    case 'D': // dimension
+      D = atoi(optarg);
+      break;
+    case 'L': // linear size
+      L = atoi(optarg);
+      break;
+    case 'T': // temperature 
+      T = atof(optarg);
+      break;
+    case 'H': // external field. nth call couples to state n
+      H_vec[H_ind] = atof(optarg);
+      H_ind++;
+      break;
+    case 's': // don't print anything during simulation. speeds up slightly
+      silent = true;
+      break;
+    case 'd':
+#ifdef HAVE_GLUT
+      draw = true;
+      break;
+#else
+      printf("You didn't compile this with the glut library installed!\n");
+      exit(EXIT_FAILURE);
+#endif
+    case 'w':
+      window_size = atoi(optarg);
+      break;
+    default:
+      exit(EXIT_FAILURE);
+    }
+  }
+
+  // initialize random number generator
+  gsl_rng *r = gsl_rng_alloc(gsl_rng_mt19937);
+  gsl_rng_set(r, rand_seed());
+
+  // define spin-spin coupling
+  std::function <double(potts_t<POTTSQ>, potts_t<POTTSQ>)> Z = [] (potts_t<POTTSQ> s1, potts_t<POTTSQ> s2) -> double {
+    return cos(2 * M_PI * (double)(s1.x + POTTSQ - s2.x) / (double)POTTSQ);
+  };
+
+  // define spin-field coupling
+  std::function <double(potts_t<POTTSQ>)> B = [=] (potts_t<POTTSQ> s) -> double {
+    return H_vec[s.x];
+  };
+
+  // initialize state object
+  state_t <dihedral_t<q_t,POTTSQ>, potts_t<POTTSQ>> s(D, L, T, Z, B);
+
+  // define function that generates self-inverse rotations
+  std::function <dihedral_t<q_t,POTTSQ>(gsl_rng *, potts_t<POTTSQ>)> gen_R = [] (gsl_rng *r, potts_t<POTTSQ> v) -> dihedral_t<q_t,POTTSQ> {
+    dihedral_t<q_t,POTTSQ> rot;
+    rot.is_reflection = true;
+    q_t x = gsl_rng_uniform_int(r, POTTSQ - 1);
+    rot.x = (2 * v.x + x + 1) % POTTSQ;
+
+    return rot;
+  };
+
+  // define function that updates any number of measurements
+  std::function <void(const sim_t *)> measurement;
+
+  double average_M = 0;
+  if (!draw) {
+    // a very simple example: measure the average magnetization
+    measurement = [&] (const sim_t *s) {
+      average_M += (double)s->M[0] / (double)N / (double)s->nv;
+    };
+  } else {
+    // a more complex example: measure the average magnetization, and draw the spin configuration to the screen
+
+#ifdef HAVE_GLUT
+    // initialize glut
+    glutInit(&argc, argv);
+    glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB);
+    glutInitWindowSize(window_size, window_size);
+    glutCreateWindow("wolff");
+    glClearColor(0.0,0.0,0.0,0.0);
+    glMatrixMode(GL_PROJECTION);
+    glLoadIdentity();
+    gluOrtho2D(0.0, L, 0.0, L);
+
+    measurement = [&] (const sim_t *s) {
+      average_M += (double)s->M[0] / (double)N / (double)s->nv;
+      glClear(GL_COLOR_BUFFER_BIT);
+      for (v_t i = 0; i < pow(L, 2); i++) {
+        potts_t<POTTSQ> tmp_s = act_inverse(s->R, s->spins[i]);
+        glColor3f(hue_to_R(tmp_s.x * 2 * M_PI / POTTSQ), hue_to_G(tmp_s.x * 2 * M_PI / POTTSQ), hue_to_B(tmp_s.x * 2 * M_PI / POTTSQ));
+        glRecti(i / L, i % L, (i / L) + 1, (i % L) + 1);
+      }
+      glFlush();
+    };
+#endif
+  }
+
+  // run wolff for N cluster flips
+  wolff(N, &s, gen_R, measurement, r, silent);
+
+  // tell us what we found!
+  printf("%" PRIcount " %d-Potts runs completed. D = %" PRID ", L = %" PRIL ", T = %g, H = %g, <M> = %g\n", N, POTTSQ, D, L, T, H_vec[0], average_M);
+
+  // free the random number generator
+  gsl_rng_free(r);
+
+  if (draw) {
+  }
+
+  return 0;
+
+}
+