[原创]用Monte-Carlo方法研究二维Ising模型的相变问题,求.doc

[原创]用Monte-Carlo方法研究二维Ising模型的相变问题，求出临界温度T，比热C及磁化率χ 图片：  图片：  /***************************************************************************************程序用途：用Monte-Carlo方法研究二维Ising模型的相变问题，求出临界温度T，比热C及磁化率χ*编译环境：Visual C++ 6.0*作??? 者：lxg? *单??? 位：*完成时间：2005年12月28日**************************************************************************************/#include stdio.h#include stdlib.h#include time.h#include math.h #define L 150???????????????????????? /*L×L个格点????????????????????????? */#define preN?? 100000???????????????? /*舍弃前preN个E，M值????????????????? */#define lateN 5100000???????????????? /*总共计算lateN个E，M值?????????????? */#define deltaN (lateN-preN)?????????? /*Monte-Carlo方法抽样E，M个数???????? */double recordEnergy[deltaN];????????? /*存储抽样能量值????????????????????? */int recordMagnet[deltaN];???????????? /*存储抽样磁矩量????????????????????? */int lattice[L][L];??????????????????? /*格点，存储格点状态????????????????? */int temp[L][L];?????????????????????? /*保留初始化格点状态????????????????? */double energy;??????????????????????? /*记录初试化及试探后系统能量，磁矩??? */int magnet;?????????????????????????? /*并赋给recordEnergy和recordMagnet??? */double T;???????????????????????????? /*温度??????????????????????????????? */struct CX???????????????????????????? /*比热C和磁化率χ???????????????????? */{??? double C;??? double X;}; /*****************************************************************************函数原型*****************************************************************************/void InitialLattice();void SaveInitial();void GetInitial();void CaculateFirstMagnet();void CaculateFirstEnergy();void GenerateNext();struct CX Caculate_C_and_X(); /*****************************************************************************主函数*****************************************************************************/int main(){?int i;??? struct CX cx[200];??? FILE *ft,*fx,*fc;?ft=fopen(T.txt,w);?fx=fopen(X.txt,w);?fc=fopen(C.txt,w);??? srand(time(NULL));??T = 1.0;?for(i=0;T4.0;i++)?{??In