Fermion Tensor Network Framework #88

yangcal · 2021-05-06T19:40:57Z

Hi Johnnie,

I'm still doing some bug/performance check but I'm posting this pull request to show the general API I have on mind for the Fermionic Tensors Network.

The most relevant module are the fermion, fermion_2d, fermion_2d_tebd which correspond to your tensor implementations. There is also a block_tensor module which is a lower level interface, this will allow interfacing general non-fermionic tensors from pyblock3.

There are a lot details in some implementations so I haven't figure out how to do docs properly, but the purpose is to show you this API and get feedbacks.

Best,
Yang

…orm to quimb original implementation

…dded 3. plaquette environment implemented

…n/fermion symmetry classes

pep8speaks · 2021-05-06T19:41:04Z

Hello @yangcal! Thanks for updating this PR. We checked the lines you've touched for PEP 8 issues, and found:

In the file quimb/tensor/block_gen.py:

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In the file quimb/tensor/block_interface.py:

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In the file quimb/tensor/block_tools.py:

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In the file quimb/tensor/fermion.py:

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In the file quimb/tensor/fermion_2d.py:

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In the file quimb/tensor/fermion_2d_tebd.py:

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Line 129:44: E231 missing whitespace after ','
Line 133:1: E302 expected 2 blank lines, found 1
Line 136:71: E231 missing whitespace after ','
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Line 136:80: E501 line too long (85 > 79 characters)
Line 137:59: E231 missing whitespace after ','
Line 144:41: E231 missing whitespace after ','
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Line 160:47: E231 missing whitespace after ','
Line 161:59: E231 missing whitespace after ','
Line 173:44: E225 missing whitespace around operator
Line 187:71: E231 missing whitespace after ','
Line 187:75: E231 missing whitespace after ','
Line 187:80: E501 line too long (85 > 79 characters)
Line 188:35: E231 missing whitespace after ','
Line 189:32: E231 missing whitespace after ','
Line 189:34: E231 missing whitespace after ','
Line 190:44: E225 missing whitespace around operator
Line 194:40: E231 missing whitespace after ','
Line 196:52: E225 missing whitespace around operator
Line 198:1: E302 expected 2 blank lines, found 1
Line 202:1: E302 expected 2 blank lines, found 1
Line 206:1: E302 expected 2 blank lines, found 1
Line 210:1: E302 expected 2 blank lines, found 1

In the file quimb/tensor/test/test_fermion_2d.py:

Line 9:1: E302 expected 2 blank lines, found 0
Line 11:15: E231 missing whitespace after ','
Line 11:18: E231 missing whitespace after ','
Line 11:21: E231 missing whitespace after ','
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Line 11:27: E231 missing whitespace after ','
Line 11:31: E231 missing whitespace after ','
Line 11:34: E231 missing whitespace after ','
Line 13:16: E231 missing whitespace after ','
Line 14:18: E231 missing whitespace after ','
Line 14:20: E231 missing whitespace after ','
Line 14:22: E231 missing whitespace after ','
Line 19:19: E231 missing whitespace after ':'
Line 19:22: E231 missing whitespace after ','
Line 19:28: E231 missing whitespace after ':'
Line 19:31: E231 missing whitespace after ','
Line 19:37: E231 missing whitespace after ':'
Line 19:40: E231 missing whitespace after ','
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Line 19:50: E231 missing whitespace after ','
Line 22:22: E231 missing whitespace after ','
Line 22:58: E231 missing whitespace after ','
Line 23:80: E501 line too long (80 > 79 characters)
Line 27:1: E302 expected 2 blank lines, found 1
Line 29:15: E231 missing whitespace after ','
Line 29:18: E231 missing whitespace after ','
Line 29:21: E231 missing whitespace after ','
Line 29:24: E231 missing whitespace after ','
Line 29:27: E231 missing whitespace after ','
Line 29:30: E231 missing whitespace after ','
Line 29:33: E231 missing whitespace after ','
Line 31:16: E231 missing whitespace after ','
Line 32:18: E231 missing whitespace after ','
Line 32:20: E231 missing whitespace after ','
Line 32:22: E231 missing whitespace after ','
Line 37:19: E231 missing whitespace after ':'
Line 37:22: E231 missing whitespace after ','
Line 37:28: E231 missing whitespace after ':'
Line 37:31: E231 missing whitespace after ','
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Line 37:40: E231 missing whitespace after ','
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Line 40:22: E231 missing whitespace after ','
Line 40:58: E231 missing whitespace after ','
Line 41:80: E501 line too long (80 > 79 characters)
Line 45:1: E302 expected 2 blank lines, found 1
Line 47:14: E231 missing whitespace after ','
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Line 49:16: E231 missing whitespace after ','
Line 50:18: E231 missing whitespace after ','
Line 50:20: E231 missing whitespace after ','
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Line 58:22: E231 missing whitespace after ','
Line 58:48: E231 missing whitespace after ','
Line 59:80: E501 line too long (80 > 79 characters)
Line 63:1: E302 expected 2 blank lines, found 1
Line 65:14: E231 missing whitespace after ','
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Line 65:18: E231 missing whitespace after ','
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Line 68:18: E231 missing whitespace after ','
Line 68:20: E231 missing whitespace after ','
Line 68:22: E231 missing whitespace after ','
Line 76:22: E231 missing whitespace after ','
Line 76:48: E231 missing whitespace after ','
Line 77:80: E501 line too long (80 > 79 characters)
Line 81:1: E302 expected 2 blank lines, found 1
Line 83:14: E231 missing whitespace after ','
Line 85:16: E231 missing whitespace after ','
Line 86:18: E231 missing whitespace after ','
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Line 86:22: E231 missing whitespace after ','
Line 94:22: E231 missing whitespace after ','
Line 94:48: E231 missing whitespace after ','
Line 95:80: E501 line too long (80 > 79 characters)
Line 99:1: E302 expected 2 blank lines, found 1
Line 218:19: E225 missing whitespace around operator
Line 224:80: E501 line too long (80 > 79 characters)
Line 255:1: E302 expected 2 blank lines, found 1
Line 259:1: E302 expected 2 blank lines, found 1
Line 263:1: E302 expected 2 blank lines, found 1
Line 267:1: E302 expected 2 blank lines, found 1

In the file quimb/tensor/test/test_fermion_numerics.py:

Line 10:1: E302 expected 2 blank lines, found 1
Line 12:15: E231 missing whitespace after ','
Line 12:22: E231 missing whitespace after ','
Line 12:29: E231 missing whitespace after ','
Line 12:37: E231 missing whitespace after ','
Line 14:36: E231 missing whitespace after ','
Line 14:38: E231 missing whitespace after ','
Line 14:73: E231 missing whitespace after ','
Line 15:36: E231 missing whitespace after ','
Line 15:38: E231 missing whitespace after ','
Line 15:74: E231 missing whitespace after ','
Line 16:36: E231 missing whitespace after ','
Line 16:38: E231 missing whitespace after ','
Line 16:73: E231 missing whitespace after ','
Line 17:36: E231 missing whitespace after ','
Line 17:38: E231 missing whitespace after ','
Line 17:74: E231 missing whitespace after ','
Line 19:59: E231 missing whitespace after ','
Line 19:63: E231 missing whitespace after ','
Line 19:80: E501 line too long (82 > 79 characters)
Line 20:59: E231 missing whitespace after ','
Line 20:63: E231 missing whitespace after ','
Line 20:80: E501 line too long (82 > 79 characters)
Line 21:59: E231 missing whitespace after ','
Line 21:63: E231 missing whitespace after ','
Line 21:80: E501 line too long (82 > 79 characters)
Line 22:59: E231 missing whitespace after ','
Line 22:63: E231 missing whitespace after ','
Line 22:80: E501 line too long (82 > 79 characters)
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Line 26:17: E231 missing whitespace after ','
Line 26:51: E231 missing whitespace after ','
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Line 28:38: E231 missing whitespace after ','
Line 29:47: E231 missing whitespace after ','
Line 30:46: E231 missing whitespace after ','
Line 34:1: E302 expected 2 blank lines, found 1
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Line 36:22: E231 missing whitespace after ','
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Line 59:1: E302 expected 2 blank lines, found 1
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Line 66:38: E231 missing whitespace after ','
Line 67:36: E231 missing whitespace after ','
Line 67:38: E231 missing whitespace after ','
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Line 79:38: E231 missing whitespace after ','
Line 80:47: E231 missing whitespace after ','
Line 81:46: E231 missing whitespace after ','
Line 85:1: E302 expected 2 blank lines, found 1
Line 87:14: E231 missing whitespace after ','
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Line 110:1: E302 expected 2 blank lines, found 1
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Line 120:59: E231 missing whitespace after ','
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Line 122:63: E231 missing whitespace after ','
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Line 125:17: E231 missing whitespace after ','
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Line 139:80: E501 line too long (85 > 79 characters)
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Line 191:35: E231 missing whitespace after ','
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Line 193:44: E225 missing whitespace around operator
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Line 201:1: E302 expected 2 blank lines, found 1
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In the file tests/test_fermion/test_fermion_2d.py:

Line 8:1: E302 expected 2 blank lines, found 1
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Line 15:52: E231 missing whitespace after ','
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Line 15:68: E231 missing whitespace after ':'
Line 31:32: E231 missing whitespace after ':'
Line 31:52: E231 missing whitespace after ','
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Line 31:65: E231 missing whitespace after ','
Line 31:68: E231 missing whitespace after ':'
Line 32:51: E231 missing whitespace after ','
Line 32:56: E231 missing whitespace after ','
Line 32:80: E501 line too long (88 > 79 characters)
Line 42:1: E302 expected 2 blank lines, found 1
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Line 102:5: E303 too many blank lines (2)
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Line 115:32: E231 missing whitespace after ':'
Line 115:52: E231 missing whitespace after ','
Line 115:56: E231 missing whitespace after ':'
Line 115:65: E231 missing whitespace after ','
Line 115:68: E231 missing whitespace after ':'
Line 116:80: E501 line too long (89 > 79 characters)
Line 137:19: E225 missing whitespace around operator
Line 139:32: E231 missing whitespace after ':'
Line 139:52: E231 missing whitespace after ','
Line 139:56: E231 missing whitespace after ':'
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Line 139:68: E231 missing whitespace after ':'
Line 140:80: E501 line too long (92 > 79 characters)
Line 144:80: E501 line too long (80 > 79 characters)

In the file tests/test_fermion/test_numerics.py:

Line 13:26: E231 missing whitespace after ':'
Line 13:35: E231 missing whitespace after ','
Line 13:48: E231 missing whitespace after ','
Line 13:52: E231 missing whitespace after ':'
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Line 14:35: E231 missing whitespace after ','
Line 14:48: E231 missing whitespace after ','
Line 14:52: E231 missing whitespace after ':'
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Line 17:39: E231 missing whitespace after ','
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Line 29:39: E231 missing whitespace after ','
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Line 30:39: E231 missing whitespace after ','
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Line 31:39: E231 missing whitespace after ','
Line 31:43: E231 missing whitespace after ','
Line 38:1: E302 expected 2 blank lines, found 1
Line 40:70: E231 missing whitespace after ','
Line 40:74: E231 missing whitespace after ','
Line 40:80: E501 line too long (84 > 79 characters)
Line 41:49: E231 missing whitespace after ','
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Line 67:39: E231 missing whitespace after ','
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Line 68:49: E231 missing whitespace after ','
Line 94:26: E231 missing whitespace after ','
Line 94:62: E231 missing whitespace after ','

In the file tests/test_fermion/test_operators.py:

Line 15:1: E302 expected 2 blank lines, found 1
Line 19:15: E225 missing whitespace around operator
Line 20:28: E231 missing whitespace after ','
Line 21:65: E231 missing whitespace after ','
Line 21:71: E231 missing whitespace after ','
Line 21:77: E261 at least two spaces before inline comment
Line 21:78: E262 inline comment should start with '# '
Line 21:80: E501 line too long (80 > 79 characters)
Line 22:64: E231 missing whitespace after ','
Line 22:67: E231 missing whitespace after ','
Line 22:77: E261 at least two spaces before inline comment
Line 22:78: E262 inline comment should start with '# '
Line 22:80: E501 line too long (103 > 79 characters)
Line 25:47: E231 missing whitespace after ','
Line 25:50: E231 missing whitespace after ','
Line 25:53: E231 missing whitespace after ','
Line 27:49: E231 missing whitespace after ','
Line 27:52: E231 missing whitespace after ','
Line 27:55: E231 missing whitespace after ','
Line 35:15: E225 missing whitespace around operator
Line 36:28: E231 missing whitespace after ','
Line 39:65: E231 missing whitespace after ','
Line 39:75: E231 missing whitespace after ','
Line 39:80: E501 line too long (81 > 79 characters)
Line 40:64: E231 missing whitespace after ','
Line 40:75: E231 missing whitespace after ','
Line 40:80: E501 line too long (80 > 79 characters)
Line 43:47: E231 missing whitespace after ','
Line 43:50: E231 missing whitespace after ','
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Line 49:55: E231 missing whitespace after ','
Line 56:80: E501 line too long (88 > 79 characters)
Line 58:38: E231 missing whitespace after ','
Line 58:42: E225 missing whitespace around operator
Line 59:51: E231 missing whitespace after ','
Line 64:80: E501 line too long (88 > 79 characters)
Line 65:21: E231 missing whitespace after ':'
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Line 65:34: E231 missing whitespace after ':'
Line 65:41: E231 missing whitespace after ':'
Line 67:35: E231 missing whitespace after ','
Line 69:51: E231 missing whitespace after ','
Line 74:80: E501 line too long (88 > 79 characters)
Line 75:21: E231 missing whitespace after ':'
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Line 77:35: E231 missing whitespace after ','
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Line 90:80: E501 line too long (99 > 79 characters)
Line 95:80: E501 line too long (88 > 79 characters)
Line 99:9: E731 do not assign a lambda expression, use a def
Line 99:35: E231 missing whitespace after ','
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Line 101:41: E231 missing whitespace after ','
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Line 120:80: E501 line too long (81 > 79 characters)
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Line 123:51: E231 missing whitespace after ','
Line 123:55: E225 missing whitespace around operator
Line 124:51: E231 missing whitespace after ','

Comment last updated at 2021-06-15 23:37:19 UTC

jcmgray · 2022-09-29T22:48:47Z

Hey @yangcal, would it be okay if I worked on this branch directly (yangcal/general)? If so, could you enable push access for me (there should be a 'Allow edits by maintainers' somewhere on the right if not already enabled).

kevinsung · 2024-08-19T22:29:24Z

Any update on this? I'd be interested in using fermionic tensor network functionality.

jcmgray · 2024-08-20T10:13:42Z

The current status is:

there is a version of this PR in https://github.com/jcmgray/quimb/tree/fermiyang which has mostly been updated to be compatible with various changes in quimb.
while this will remain a very useful reference, going forward probably the main fermionic implementation will be https://github.com/jcmgray/symmray, which adapts this to a more recent formalism which is completely 'local' (no need to track a fermion space, fermionic arrays look mostly like ndarrays etc.), based on e.g. https://arxiv.org/abs/2404.14611 and the older 'grassmann' formalism: https://arxiv.org/abs/1004.2563. With this, fermions are almost 'just' another array backend, with some minor considerations

yangcal added 30 commits December 16, 2020 15:57

first commit, fermion Tensor, TensorNetwork, PEPS implemented

3c5be57

col env added & cleanup

5c0c41d

remove _move/left func, setup for bond compress

7fa7ce2

compress added

92ee274

bugfix for ftensor shape; fermion_2d.compute_row/col_environment conf…

c5dc467

…orm to quimb original implementation

bugfix in reorder iterator

d0caf9f

1. bugfix 2. reorganize fermion funcs(compress, contract), canonize a…

bb8008e

…dded 3. plaquette environment implemented

ind_size reimplementation

37af5f4

bugfix in tensor split, multiply_index_diagonal addded

2895394

bugfix for connect_funcs when 2nd tensor is before 1st one in f.s.

d1b4c78

bugfix in reorder; fix connected_contract

f65596d

bugfix for tensor_contract when output_inds given

56ab63e

fix bug in fs.replace_tensor

6b615c9

add fermion_2d.gate

4909895

bugfix for definition of tensor order in contract/split/compress

ca7f463

add fermion operators

2f604b8

bug fix in dense boundary contraction

87f9331

add tn.contract method; introduce compute_norm in 2d ftns

88705f5

fermion operators exponential added; operator tests added

ec96e26

2d.compute_local_expectation added

212032f

fix exponential sign

571c13c

reorganize

13f71c6

add fermion tensor norm, rename operator identity

479399b

add tensor_balance_bonds

32afdbc

add hubbard module; bugfix

794c748

fermion_2d_tebd added

1a1d032

rescale random fermion tensors

7184740

Merge remote-tracking branch 'upstream/develop' into develop

b0703c5

first syn

77567cf

rename to_exponential

dd2d8cb

yangcal added 12 commits April 11, 2021 14:41

bug fix for numerics test

3998bc3

API adjustment and cleanup; rename modules in effort for general boso…

f6aa564

…n/fermion symmetry classes

cleanup and revert tensor_2d

ea95802

merge recent develop change

382738a

refactor fermion module; tensor_block module added for general symmetry

07117fd

clean up tensor_core module

25cfc36

fix bug when there is only one operand in tensor_contract

1b0be8e

bugfix in canonize

20bac5c

split gate index fix

2ac25d4

fix bug for python backend

7d4b531

doc added

160f579

clean up old tests

3be6717

remove test files

b4b9496

jcmgray mentioned this pull request May 20, 2021

symmetry in tensor network #89

Closed

yangcal added 10 commits May 21, 2021 15:28

add func to obtain contraction path for block tensors

90add79

bugfix

1d83286

add random methods for block tensors and fermion PEPS

e53892c

Merge remote-tracking branch 'upstream/develop' into general

66d7775

adjust to new _inds_to_eq

cb295ad

bugfix

f1db686

bugfix in block_gen.gen_2d_bonds

84e8942

typo fix in fermion_2d

2dc7bb7

remove the reordering after environment construction

f0fc03a

implement optimized reorder_all method, enable fermion_path attr

0a4b884

jcmgray mentioned this pull request Sep 27, 2021

Implement simple symmetry #95

Closed

Repository owner deleted a comment from sonarcloud bot Jul 10, 2024

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Fermion Tensor Network Framework #88

Fermion Tensor Network Framework #88

yangcal commented May 6, 2021

pep8speaks commented May 6, 2021 •

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jcmgray commented Sep 29, 2022

kevinsung commented Aug 19, 2024 •

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jcmgray commented Aug 20, 2024

Fermion Tensor Network Framework #88

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Fermion Tensor Network Framework #88

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yangcal commented May 6, 2021

pep8speaks commented May 6, 2021 • edited Loading

Comment last updated at 2021-06-15 23:37:19 UTC

jcmgray commented Sep 29, 2022

kevinsung commented Aug 19, 2024 • edited Loading

jcmgray commented Aug 20, 2024

pep8speaks commented May 6, 2021 •

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kevinsung commented Aug 19, 2024 •

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