X-Git-Url: http://git.treefish.org/~alex/phys/heatbath.git/blobdiff_plain/529d936f699ce3260e09903837fbeab9159eb05f..b29c28bcd466d938ffd95887abef67dc1491bd50:/sim-nor.hpp?ds=sidebyside diff --git a/sim-nor.hpp b/sim-nor.hpp deleted file mode 100644 index 9c1d166..0000000 --- a/sim-nor.hpp +++ /dev/null @@ -1,84 +0,0 @@ -#ifndef SIM_HPP -#define SIM_HPP - -#include -#include -#include - -#include "latlib/neigh.h" - -#define EPSILONPHI 0.5 - -class sim : public o815::sim { -public: - struct siteconf { - complex phi; - }; - sim(o815 *_O815); - siteconf* conf; - unsigned int LSIZE2; - -private: - void _makeSweep(); - void _newParas(); - gsl_rng* rangsl; - neigh *nb; - int updatePhi (const int& x); - double M; - double SofPhi(const int& x, const complex& phix); - double rhoPhi(const int& x, const complex& phixCandidate); -}; - - - -sim::sim(o815 *_O815) : o815::sim( _O815, - sizeof(siteconf)* - (_O815->comargs.lsize[0]*_O815->comargs.lsize[1]) ) { - conf = (siteconf*)confMem; - - rangsl = gsl_rng_alloc(gsl_rng_ranlxs0); - gsl_rng_set(rangsl, time(NULL)); - - LSIZE2 = _O815->comargs.lsize[0] * _O815->comargs.lsize[1]; - - nb = new neigh(2, _O815->comargs.lsize[0], _O815->comargs.lsize[1]); -} - -void sim::_makeSweep() { - for (int ix = 0; ix < LSIZE2; ix++) - updatePhi(ix); -} - -void sim::_newParas() { - M = pow( (*O815->paraQ)["mass"], 2 ) + 4; - *log << "SIM: Resetting fields." << endl << flush; - memset(conf, 0, sizeof(siteconf)*LSIZE2); -} - -int sim::updatePhi(const int& x) { - complex phixCandidate = conf[x].phi + - complex ( 2*EPSILONPHI*( 0.5 - gsl_rng_uniform(rangsl) ), - 2*EPSILONPHI*( 0.5 - gsl_rng_uniform(rangsl) ) ); - - if ( gsl_rng_uniform(rangsl) < rhoPhi(x, phixCandidate) ) { - conf[x].phi = phixCandidate; - return 1; - } - - return 0; -} - -double sim::rhoPhi(const int& x, const complex& phixCandidate) { - return exp( SofPhi(x, conf[x].phi) - SofPhi(x, phixCandidate) ); -} - -double sim::SofPhi(const int& x, const complex& phix) { - double sofphi = M * norm(phix); - - for (int nu=0; nu<4; nu++) - sofphi -= 2 * real( conj(phix) * conf[ (*nb)[x*4+nu] ].phi ); - - return sofphi; -} - -#endif