-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathTruncateU.py
executable file
·174 lines (156 loc) · 5.03 KB
/
TruncateU.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
import pyUni10 as uni10
#import sys
#import numpy as np
#import matplotlib.pyplot as plt
#import matplotlib
#import pylab
#import random
import copy
#import time
#import line_profiler
def bond_list_dist(T):
bond_list=list(T.bond())
bond_Inlist=[]
bond_OUTlist=[]
for i in xrange(len(bond_list)):
if bond_list[i].type()== 1:
bond_Inlist.append(bond_list[i])
else:
bond_OUTlist.append(bond_list[i])
return bond_Inlist, bond_OUTlist
#@profile
def setTruncation(theta, chi):
LA=uni10.UniTensor(theta.bond())
GA=uni10.UniTensor(theta.bond())
GB=uni10.UniTensor(theta.bond())
bond_In_list,bond_OUT_list =bond_list_dist(theta)
#print "chi", chi
svds = {}
blk_qnums = theta.blockQnum()
dim_svd=[]
for qnum in blk_qnums:
M_tem=theta.getBlock(qnum)
svds[qnum] = M_tem.svd()
dim_svd.append(int(svds[qnum][1].col()))
svs = []
bidxs = []
for bidx in xrange(len(blk_qnums)):
svs, bidxs = sv_merge1(svs, bidxs, bidx, svds[blk_qnums[bidx]][1], chi, len(blk_qnums))
dims = [0] * len(blk_qnums)
for bidx in bidxs:
dims[bidx] += 1
qnums = []
for bidx in xrange(len(blk_qnums)):
qnums += [blk_qnums[bidx]] * dims[bidx]
bdi_mid = uni10.Bond(uni10.BD_IN, qnums)
#print bdi_mid, "chi", chi
bdo_mid = uni10.Bond(uni10.BD_OUT, qnums)
bond_In_list.append(bdo_mid)
GA.assign(bond_In_list)
bond_OUT_list.insert(0, bdi_mid)
GB.assign(bond_OUT_list)
LA.assign([bdi_mid, bdo_mid])
degs = bdi_mid.degeneracy()
for qnum, dim in degs.iteritems():
if qnum not in svds:
raise Exception("In setTruncaton(): Fatal error.")
svd = svds[qnum]
GA.putBlock(qnum, svd[0].resize(svd[0].row(), dim))
GB.putBlock(qnum, svd[2].resize(dim, svd[2].col()))
LA.putBlock(qnum, svd[1].resize(dim, dim) )
return GA, GB, LA
def sv_merge(svs, bidxs, bidx, sv_mat, chi, len_qn):
#print "chi_in", chi
if(len(svs)):
length = len(svs) + sv_mat.elemNum()
length = length if length < chi else chi
ori_svs = svs
ori_bidxs = bidxs
svs = [0] * length
bidxs = [0] * length
svs = []
bidxs = []
cnt = 0
cur1 = 0
cur2 = 0
while cnt < length:
if(cur1 < len(ori_svs)) and cur2 < sv_mat.elemNum():
if ori_svs[cur1] >= sv_mat[cur2]:
if (ori_svs[cur1] > 1.0e-12):
svs.append(ori_svs[cur1])
bidxs.append(ori_bidxs[cur1])
cur1 += 1
else:
if (sv_mat[cur2] > 1.0e-12):
svs.append( sv_mat[cur2])
bidxs.append(bidx)
cur2 += 1
elif cur2 < sv_mat.elemNum() :
for i in xrange(cnt, length):
if (sv_mat[cur2] > 1.0e-12):
svs.append(sv_mat[cur2])
bidxs.append(bidx)
cur2 += 1
break
else:
for i in xrange(cur1, len(ori_svs)):
svs.append(ori_svs[i])
bidxs.append(ori_bidxs[i])
break
cnt += 1
else:
if (len_qn is 1):
bidxs = [bidx] * chi
svs = [sv_mat[i] for i in xrange(chi)]
elif (sv_mat[0] > 1.0e-12):
bidxs = [bidx] * sv_mat.elemNum()
svs = [sv_mat[i] for i in xrange(sv_mat.elemNum())]
else: bidxs = [bidx]; svs = [sv_mat[0]];
return svs, bidxs
def sv_merge1(svs, bidxs, bidx, sv_mat, chi, len_qn):
if(len(svs)):
length = len(svs) + sv_mat.elemNum()
length = length if length < chi else chi
ori_svs = svs
ori_bidxs = bidxs
svs = [0] * length
bidxs = [0] * length
svs = []
bidxs = []
cnt = 0
cur1 = 0
cur2 = 0
while cnt < length:
if(cur1 < len(ori_svs)) and cur2 < sv_mat.elemNum():
if ori_svs[cur1] >= sv_mat[cur2]:
if (ori_svs[cur1] > -0.01):
svs.append(ori_svs[cur1])
bidxs.append(ori_bidxs[cur1])
cur1 += 1
else:
if (sv_mat[cur2] > -0.01):
svs.append( sv_mat[cur2])
bidxs.append(bidx)
cur2 += 1
elif cur2 < sv_mat.elemNum() :
for i in xrange(cnt, length):
if (sv_mat[cur2] > -0.01):
svs.append(sv_mat[cur2])
bidxs.append(bidx)
cur2 += 1
break
else:
for i in xrange(cur1, len(ori_svs)):
svs.append(ori_svs[i])
bidxs.append(ori_bidxs[i])
break
cnt += 1
else:
if (len_qn is 1):
bidxs = [bidx] * chi
svs = [sv_mat[i] for i in xrange(chi)]
elif (sv_mat[0] > -0.01):
bidxs = [bidx] * sv_mat.elemNum()
svs = [sv_mat[i] for i in xrange(sv_mat.elemNum())]
else: bidxs = [bidx]; svs = [sv_mat[0]];
return svs, bidxs