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| 本帖最后由 王二小 于 2018-11-17 21:08 编辑 
 在 106 行外 定义初始值 rou(-2,-2) rwa(-2,-2) 的实部都是1 ,
 但是进入循环 , rou(-2,-2) 的实部就从0 开始了
 ! Initial Values for the Expnasion Coefficients
 do a = -5, 1
 do b = -5, total_num
 if ((a==b).and.(a==-2))then
 rwa(a,b) = 1.0d0             ! In case of a=-2, b=-2: r(a,b)=r(g,g)
 rou(a,b) = 1.0d0    !!!!!!!!!!!!!!!! rou(-2,-2)的初始值是1!!!!!!!!!!!!!!!!
 else
 rwa(a,b) = 0.0d0
 rou(a,b) = 0.0d0
 end if
 end do
 end do
 
 ! Initial Values
 pop_g = 1.0d0
 pop_1e = 0.0d0
 pop_2e = 0.0d0
 pop_mnp = 0.0d0
 pop_sem = 0.0d0
 
 write (*,*) " time "," pop_g "," pop_1e "," pop_2e "," pop_mnp "," pop_sem "
 write (*,*) "out" ,rou(-2,-2), rwa(-2,-2)
 write(11,*) time, pop_g
 write(12,*) time, pop_1e
 write(13,*) time, pop_2e
 write(14,*) time, pop_mnp
 write(15,*) time, pop_sem
 !!!!!!!!!!!!!!!!从这里开始进入循环,rou(-2,-2) 的实部就变成从0 开始了,请问为什么?!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
 do
 call rk4 (fin,time,delta_time,nearatom,nearatom2,ncenter,cor_cen,omega_telta,J_1eI,J_2eI,J_1e2e,dipole_mnp,fout)
 call multi_to_single (rwa,fin)
 call single_to_multi (fout,rwa)
 time = time + delta_time
 t = t + 1
 if (mod(t, 50)==0) then
 ss=ss+1
 
 write (*,*)  "in", rwa(-2,-2), rou(-2,-2)
 
 do a = -5, 0
 do b = -5, total_num
 if ((a/=b).and.(b==-2)) then
 rou(a,b) = rwa(a,b)*exp(-ii*omega_0*time)                   ! 蟻=r*e^(-i*蠅0*t):
 ! rou(-5~-3,-2):蟻(I,g), rou(-1,-2):蟻(1e,g), rou(0,-2):蟻(2e,g)
 else if ((a==-2).and.(b==-2)) then
 rou(a,b) = rwa(a,b)
 else
 rou(a,b) = rwa(a,b)
 end if
 end do
 end do
 
 do b = 1, total_num
 ! rou(-2,b): 蟻(g,m)
 rou(-2,b) = rwa(-2,b)*exp(ii*omega_0*time)
 ! rou(1,b): 蟻(n,m)
 rou(1,b) = rwa(1,b)*conjg(rwa(1,b))
 end do
 
 pop_g   = rou(-2,-2)
 pop_1e  = rou(-1,-1)
 pop_2e  = rou(0,0)
 pop_mnp = 0.0d0
 pop_sem = 0.0d0
 
 do  a = -5, -3
 pop_mnp = pop_mnp + rou(a,a)
 end do
 do a = 1, total_num
 pop_sem = pop_sem + real(rwa(1,a)*conjg(rwa(1,a)))
 end do
 
 write (*,*)  "in ", rwa(-2,-2), rou(-2,-2)
 write (*,*)  time, pop_g, pop_1e, pop_2e, pop_mnp, pop_sem
 write (11,*) time, pop_g
 write (12,*) time, pop_1e
 write (13,*) time, pop_2e
 write (14,*) time, pop_mnp
 write (15,*) time, pop_sem
 
 全部代码附件上传了,因为有字节的限制
 
 
 
 
 
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