# coding: utf-8
from PEPS import mps_tools
from __future__ import division
import math
import numpy as np
from PEPS import IO_helper as IO
IO.go_to_data_parent('softcoreboson')
IO.add_to_path()
state = IO.get_state()
mps = mps_tools
mps.example_SPT_calc()
L=3
p=2
edge_d=2
#lcst = get_left_canonical_site_tensor(statename='hardcoreboson', L=L)
gcst, Lambda, V_basis_change = mps.get_canonical_site_tensor(statename='hardcoreboson', L=L)
p_dim, bond_dim, _ = gcst.shape
reload(mps)
L=3
p=2
edge_d=2
#lcst = get_left_canonical_site_tensor(statename='hardcoreboson', L=L)
gcst, Lambda, V_basis_change = mps.get_canonical_site_tensor(statename='hardcoreboson', L=L)
p_dim, bond_dim, _ = gcst.shape
#print rhoL
XHC = np.array([[0, 1], [1, 0]])
ZHC = np.array([[1, 0],[0,-1]])
ZSC = np.array([[1, 0, 0, 0],[0,-1, 0, 0],[0,0, 1, 0],[0,0, 0, -1]])
Id = np.identity(p_dim)
def go(L):
#with PdfPages('L_10_all_mom_10.pdf') as pdf:
###########################################################
#get state
i=10
stri = str(i)
IO.go_to_data_parent('interpolatedboson/a'+stri)
IO.add_to_path()
state = IO.get_state()
Ls = [L]
L_min, L_max = min(Ls), max(Ls)
shift_func = lambda L: 0
###########################################################
#make edge spectrum if necessary
params = IO.Params.kw('LKN', L=Ls, K=[0], N=[0])
for p in params:
run.create_edge_spectrum(state, p, overwrite=False)
###########################################################
#load and prepeare edge spectrum
spectrum = pp.load_edge_spectrum(state, Ls)
spectrum = pp.shift_boson_number(spectrum)
spectrum.add_as_prop(pp.energy, val='val')
data_name = 'energy'
pp.shift_and_scale(spectrum, scale=0) #just shift
data_name = 'E'
all_points = list(spectrum.points())
spec_points = spectrum.collect(['K', 'N', 'band'], 'L', data_name)
spec_points = spec_points.filter([lambda p: p['K']<=L/2])
spec_points.plot_toolbox = data.SpectraPlotTools()
spec_points.plot_toolbox.markers = ['1', '2', '3', '4']
spec_points.update_plot_args(title='', xlabel='K', ylabel='Energy',
xlim=[-0.5, 12], ylim=[-0.4, 6])
#even_colors = ['k', 'b', 'g', 'r', 'gold', 'orange', 'orangered', 'y','m', 'lime', 'c']
color_pairs = [('k', 'k'), ('b', 'c'),('g', 'lime'),('r', 'm'),('orange', 'orangered'),('gold', 'y')]
colors = [c for cp in color_pairs for c in cp]
def color_func(N):
x=0
if N<0:
x=1
if N%2==0:
return abs(N)+x
else:
return abs(N)+1+4+x
spec_points.plot_toolbox.colors = colors
spec_points.plot_toolbox.color_func = color_func
###########################################################
#make plot
if makelegend:
xlim=[-0.5, np.floor(L/2)+1.1]
else:
xlim=[-0.5, np.floor(L/2)+.5]
fig, spec_ax = spec_points.plot_toolbox.spec_plot(spec_points, data_name,
shift_func=shift_func, copy_points=True,xlim=xlim, legend=None)
# if i!=10 and i!=0:
# plt.title('Entanglement Spectrum for b=0.'+stri)
# elif i==10:
# plt.title('Entanglement Spectrum for soft-core state')
# elif i==0:
# plt.title('Entanglement Spectrum for hard-core FBI')
if L==10:
plt.ylabel('Entanglement Energy')
if L==9:
plt.ylabel('')
ax = plt.gca()
Ks = np.arange(0, np.floor(L/2+1))
ax.set_xticks(Ks)
if L==10:
ax.set_xticklabels(['0', '$\pi/5$', '$2\pi/5$', '$3\pi/5$', '$4\pi/5$', '$\pi$'])
if L==9:
ax.set_xticklabels(['0', '$2\pi/9$', '$4\pi/9$', '$6\pi/9$', '$8\pi/9$'])
#ax.set_xticklabels(['$2\pi'+str(K)+'/'+str(L)+'$' if K in [1for K in Ks])
ax.yaxis.tick_left()
ax.xaxis.tick_bottom()
if makelegend:
handles, labels = ax.get_legend_handles_labels()
hl = sorted(zip(handles, labels),
key= lambda x: abs(int(x[1])))
handles2, labels2 = zip(*hl)
def label_helper(string_representing_integer):
i = int(string_representing_integer)
if not i%2:
if i<=0:
return str(i//2)
else:
return '+'+str(i//2)
else:
if i<=0:
return str(i)+'/2'
else:
return '+'+str(i)+'/2'
labels3 = [label_helper(l) for l in labels2]
if L==9:
legendloc = (0.8, 0.15)
if L==10:
legendloc = (0.825, 0.15)
leg=ax.legend(handles2, labels3, loc = legendloc, numpoints=1, frameon=False, labelspacing=0.25)