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Davison, Jacob
tfimsrg
Commits
43734dc6
Commit
43734dc6
authored
Sep 01, 2020
by
Jacob August Davison
Browse files
added imaginary time generator
parent
949d5917
Changes
1
Hide whitespace changes
Inline
Side-by-side
oop_imsrg/generator.py
View file @
43734dc6
...
...
@@ -784,4 +784,86 @@ class BrillouinGenerator(Generator):
eta2B
[
i
,
j
,
a
,
b
]
=
-
val
return
(
eta1B
,
eta2B
)
class
ImTimeGenerator
(
Generator
):
"""Calculate Imaginary time generator for a normal ordered Hamiltonian."""
def
__init__
(
self
,
h
):
assert
isinstance
(
h
,
Hamiltonian
),
"Arg 0 must be Hamiltonian object"
self
.
f
=
h
.
f
self
.
G
=
h
.
G
self
.
_holes
=
h
.
holes
self
.
_particles
=
h
.
particles
self
.
_sp_basis
=
h
.
sp_basis
@
property
def
f
(
self
):
"""Returns:
f -- one-body tensor elements (initialized by Hamiltonian object)"""
return
self
.
_f
@
property
def
G
(
self
):
"""Returns:
f -- two-body tensor elements (initialized by Hamiltonian object)"""
return
self
.
_G
@
f
.
setter
def
f
(
self
,
f
):
"""Sets the one-body tensor."""
self
.
_f
=
f
@
G
.
setter
def
G
(
self
,
G
):
"""Sets the two-body tensor."""
self
.
_G
=
G
def
calc_eta
(
self
):
bas1B
=
self
.
_sp_basis
holes
=
self
.
_holes
particles
=
self
.
_particles
f
=
self
.
f
G
=
self
.
G
eta1B
=
np
.
zeros_like
(
f
)
eta2B
=
np
.
zeros_like
(
G
)
for
a
in
particles
:
for
i
in
holes
:
dE
=
f
[
a
,
a
]
-
f
[
i
,
i
]
+
G
[
a
,
i
,
a
,
i
]
val
=
np
.
sign
(
dE
)
*
f
[
a
,
i
]
eta1B
[
a
,
i
]
=
val
eta1B
[
i
,
a
]
=
-
val
for
a
in
particles
:
for
b
in
particles
:
for
i
in
holes
:
for
j
in
holes
:
dE
=
(
f
[
a
,
a
]
+
f
[
b
,
b
]
-
f
[
i
,
i
]
-
f
[
j
,
j
]
+
G
[
a
,
b
,
a
,
b
]
+
G
[
i
,
j
,
i
,
j
]
-
G
[
a
,
i
,
a
,
i
]
-
G
[
a
,
j
,
a
,
j
]
-
G
[
b
,
i
,
b
,
i
]
-
G
[
b
,
j
,
b
,
j
]
)
val
=
np
.
sign
(
dE
)
*
G
[
a
,
b
,
i
,
j
]
eta2B
[
a
,
b
,
i
,
j
]
=
val
eta2B
[
i
,
j
,
a
,
b
]
=
-
val
return
(
eta1B
,
eta2B
)
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