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Determining delta from gf (currently only BlockGf and GfImFreq)

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This commit is contained in:
Priyanka Seth 2014-10-07 09:18:53 +02:00
parent ec32223ea7
commit 70d4aba545
4 changed files with 23 additions and 19 deletions
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2
pytriqs/gf/local/CMakeLists.txt
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@ -9,12 +9,12 @@ SET(PYTHON_SOURCES
${CMAKE_CURRENT_SOURCE_DIR}/_gf_legendre.py
${CMAKE_CURRENT_SOURCE_DIR}/_gf_refreq.py
${CMAKE_CURRENT_SOURCE_DIR}/_gf_retime.py
#${CMAKE_CURRENT_SOURCE_DIR}/gf_two_real_times.py
${CMAKE_CURRENT_SOURCE_DIR}/_gf_plot.py
${CMAKE_CURRENT_SOURCE_DIR}/_gf_common.py
${CMAKE_CURRENT_SOURCE_DIR}/inverse.py
${CMAKE_CURRENT_SOURCE_DIR}/lazy_expressions.py
${CMAKE_CURRENT_SOURCE_DIR}/tools.py
${CMAKE_CURRENT_SOURCE_DIR}/functions.py
)
# Install python sources

18
pytriqs/gf/local/__init__.py
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@ -29,24 +29,16 @@ It is imported with the command::
from gf import *
from inverse import inverse
#from gf_imfreq import GfImFreq
#from gf_imtime import GfImTime
#from gf_refreq import GfReFreq
#from gf_retime import GfReTime
#from gf_two_real_times import GfTwoRealTime
#from gf_legendre import GfLegendre
from block_gf import BlockGf
from descriptors import Omega, iOmega_n, SemiCircular, Wilson, Fourier, InverseFourier, LegendreToMatsubara, MatsubaraToLegendre
from functions import delta
#__all__ = ['TailGf','GfImFreq','MeshImFreq']
__all__ = ['Omega','iOmega_n','SemiCircular','Wilson','Fourier','InverseFourier','LegendreToMatsubara','MatsubaraToLegendre','lazy_expressions','TailGf',
__all__ = ['Omega','iOmega_n','SemiCircular','Wilson','Fourier','InverseFourier','LegendreToMatsubara','MatsubaraToLegendre',
'lazy_expressions','TailGf',
'GfImFreq','MeshImFreq',
'GfImTime', 'MeshImTime',
'GfReFreq', 'MeshReFreq',
'GfReTime', 'MeshReTime',
'make_gf_from_inverse_fourier',
'BlockGf','inverse'] #,'GfTwoRealTime']
#__all__ = ['Omega','iOmega_n','SemiCircular','Wilson','Fourier','InverseFourier','LegendreToMatsubara','MatsubaraToLegendre','lazy_expressions','TailGf','GfImFreq','GfImTime','GfReFreq','GfReTime','GfLegendre','BlockGf','inverse'] #,'GfTwoRealTime']
'BlockGf','inverse',
'delta']

5
pytriqs/gf/local/block_gf.py
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@ -364,11 +364,6 @@ class BlockGf(object):
self.__check_attr("invert")
for i,g in self : g.invert()
def delta(self) :
"""Compute delta from G0"""
self.__check_attr("delta")
return self.__class__( name_block_generator = [ (n, g.delta()) for n,g in self], make_copies=False)
def transpose(self):
"""Transpose of the BlockGf"""
self.__check_attr("transpose")

17
pytriqs/gf/local/functions.py Normal file
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@ -0,0 +1,17 @@
from inverse import inverse
from block_gf import BlockGf
from gf import GfImFreq
from descriptor_base import A_Omega_Plus_B
def delta(g) :
"""Compute delta from G0"""
if type(g) == BlockGf:
return BlockGf(name_block_generator = [ (n, delta(g0)) for n,g0 in g], make_copies=False)
elif type(g) == GfImFreq:
g0_iw_inv = inverse(g)
delta_iw = g0_iw_inv.copy()
delta_iw <<= A_Omega_Plus_B(g0_iw_inv.tail[-1], g0_iw_inv.tail[0])
delta_iw -= g0_iw_inv
return delta_iw
else:
raise TypeError, "No function delta for g0 object of type %s"%type(g)