ed_config_readable.dat

### Configuration file for exact diagonalization algorithm 
### 										
### Sebastian Dick, Wuerzburg 2016						
###										
### Directions: Parameter names must begin with '$', 			
### the numerical parameter can be found in line that follows.			
### Make sure there are no whitespaces.	
###
### IMPORTANT: So far only integer values are supported					



#Write dense matrix in file
$DenseFlag
0

#Number of computed eigenvalues as fraction of matrix size (divided by pow(2,$eigenv))
$eigenv
6

#Absolute number of written eigenvalues
$out
1000

#linear positive offset of eigenvalues (better convergence of alg. if all ev's are positive)
$offset
40

#Periodic boundary conditions
$pbc
1


###Physical parameters

#System size
$Length
8

# Interaction strength, hopping etc.

#Diagonal term
$par1
-1

#Non-diagonal terms
$par2
-1
$par3
1

#------------- SYMMETRIES--------------------

#Use number conservation
$NumConFlag
0
$PartNum
0


#Use fermion parity conservation
$ParFlag
0
$Parity
0

#Symmetry lib

#Don't change for now!
#Number of symmetries (Number con. and ferm. parity not included)
$NSym
1

#Don't change for now!
$Symmetries
Sym1
end

#Translational Symmetry (can be modified to implement other symmetries)

#Symcnt 
#	picks the momentum eigenvalue from the list Symrow (default: 0), is automatically augmented by ed_update
#Symrow 
#	list of eigenvalues/ Hilbert-space sectors for which H is being diagonalized
#Sym1 
#	description of the symmetry transformation (in this case: translation) 
#	1st line gives the original sites, 
#	2nd line the transformed sites,
#	3rd line gives the periodicity of the transformation (number of sites for translation)
# 	4th line, keep at '0'!	

$Symcnt
0
$Symrow
0	1	2	3	4	5	6	7
$Sym1
0	1	2	3	4	5	6	7	
1	2	3	4	5	6	7	0
8
0