4.2.14. OneBodyG file¶
This file determines the target components of the one-body Green’s function \(\langle c_{i\sigma_1}^{\dagger}c_{j\sigma_2}\rangle\). An example of the file format is as follows.
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NCisAjs 24
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======== Green functions ======
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0 0 0 0
0 1 0 1
1 0 1 0
1 1 1 1
2 0 2 0
2 1 2 1
3 0 3 0
3 1 3 1
4 0 4 0
4 1 4 1
5 0 5 0
5 1 5 1
6 0 6 0
6 1 6 1
7 0 7 0
7 1 7 1
8 0 8 0
8 1 8 1
9 0 9 0
9 1 9 1
10 0 10 0
10 1 10 1
11 0 11 0
11 1 11 1
File format¶
- Line 1: Header
- Line 2: [string01] [int01]
- Lines 3-5: Header
- Lines 6-: [int02] [int03] [int04] [int05].
Parameters¶
[string01]
Type : String (a blank parameter is not allowed)
Description : A keyword for the total number of one-body Green’s functions. You can freely give a name to the keyword.
[int01]
Type : Int (a blank parameter is not allowed)
Description : An integer giving the total number of one-body Green’s functions.
[int02], [int04]
Type : Int (a blank parameter is not allowed)
Description : An integer giving a site index (\(0<=\) [int02], [int04] \(<\)
Nsite).[int03], [int05]
Type : Int (a blank parameter is not allowed)
Description : An integer giving a spin index:For Hubbard or Kondo system, the index can be selected from0: Up-spin,1: Down-spin.For Spin system, the index can be selected from\(0, 1, \cdots, 2S+1\) (corresponding to -\(S-0.5, -S+0.5, \cdots S+0.5\)).
Use rules¶
- Headers cannot be omitted.
- A program is terminated when the components of the one-body Green’s functions are double counted.
- A program is terminated when [int01] is different from the total number of one-body Green’s functions defined in this file.
- A program is terminated when [int02]-[int05] are outside the range of the defined values.
