# Add the root path of the pygra library
import os
import sys
sys.path.append(os.environ['PYGRAROOT'])
import numpy as np
from pygra import geometry
from pygra import spectrum
g = geometry.honeycomb_lattice()
h = g.get_hamiltonian(has_spin=True)
spectrum.multi_fermi_surface(h,
nk=60,
energies=np.linspace(-4, 4, 100),
delta=0.1,
nsuper=1)
# Add the root path of the pygra library
import os
import sys
sys.path.append(os.environ['PYGRAROOT'])
from pygra import geometry
from pygra import hamiltonians
import numpy as np
from pygra import specialhamiltonian
from pygra import parallel
from pygra import spectrum
parallel.cores = 7
h = specialhamiltonian.tbg(n=7, ti=0.4, is_sparse=True, has_spin=False)
h.set_filling(0.5, nk=2)
#h.get_bands(num_bands=20)
#exit()
spectrum.multi_fermi_surface(h,
nk=60,
energies=np.linspace(-0.05, 0.05, 100),
delta=0.0005,
nsuper=1)