Global variables
These are global variables of the edipy2 module. They form a subset of the global variables of the EDIpack2 library.
Along with all the other global variables, they can be set in the input file,
and are read when calling the edipy2.global_env.read_input() function.
The exposed global variables can be accessed as properties of the edipy2.global_env class.
import numpy as np
from edipy2 import global_env as ed
ed.Nspin = 1 # set a global variable
mylocalvar = ed.Nspin # assing to a local variable (the value of mylocalvar will not change if ed.Nspin changes)
print(ed.Nspin) # all functions can have global variables as arguments
np.arange(ed.Nspin)
- edipy2.global_env.beta
Value of the inverse temperature, at T=0 is used as a IR cut-off
Accesses
beta- Type:
- Default:
1000.0
- edipy2.global_env.dmft_error
Error threshold for DMFT convergence
Accesses
dmft_error- Type:
- Default:
1e-05
- edipy2.global_env.ed_total_ud
Flag to select which type of quantum numbers have to be considered: T (default) total Nup-Ndw, F orbital based Nup-Ndw.
Accesses
ed_total_ud- Type:
- Default:
True
- edipy2.global_env.ed_twin
Flag to reduce (T) or not (F,default) the number of visited sector using twin symmetry
Accesses
ed_twin- Type:
- Default:
False
- edipy2.global_env.Nbath
Number of bath levels. See the specifics of the bath geometries
Accesses
nbath- Type:
- Default:
6
- edipy2.global_env.Norb
Number of correlated orbitals. Maximum 5 orbitals are supported
Accesses
norb- Type:
- Default:
1
- edipy2.global_env.nread
Value of the target density for fixed density calculations. If valued 0, it is discarded.
Accesses
nread- Type:
- Default:
0.0
- edipy2.global_env.Nspin
Number of explicitly defined spin degrees of freedom. If Nspin=1, the two spin block of the Hamiltonian, Green’s function, self-energy and so on are assumed equal. If Nspin=2 they may differ (e.g. for non-SU(2) or magnetic systems). The superconductive variant of the code requires Nspin=1
Accesses
nspin- Type:
- Default:
1
- edipy2.global_env.Nsuccess
Number of successive iterations below threshold for convergence
Accesses
nsuccess- Type:
- Default:
1
- edipy2.global_env.sb_field
Value of a symmetry breaking field for magnetic solutions
Accesses
sb_field- Type:
- Default:
0.1
- edipy2.global_env.Uloc
Values of the local interaction per orbital (max 5). If less values are provided, the array is filled in increasing order
Accesses
uloc- Type:
- Default:
[2.0, 0.0, 0.0, 0.0, 0.0]
- edipy2.global_env.xmin
Value for the smallest position for the lattice PDF
Accesses
xmin- Type:
- Default:
-3.0