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Handling thermalization correctly in t0

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Simon Kuberski 2022-02-04 10:15:43 +01:00
parent ff738de6af
commit 65568c84a4
1 changed files with 16 additions and 1 deletions
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17
pyerrors/input/openQCD.py
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@ -226,7 +226,12 @@ def extract_t0(path, prefix, dtr_read, xmin,
The data around the zero crossing of t^2<E> - 0.3
is fitted with a linear function
from which the exact root is extracted.
Only works with openQCD v 1.2.
Only works with openQCD
It is assumed that one measurement is performed for each config.
If this is not the case, the resulting idl, as well as the handling
of r_start, r_stop and r_step is wrong and the user has to correct
this in the resulting observable.
Parameters
----------
@ -263,6 +268,11 @@ def extract_t0(path, prefix, dtr_read, xmin,
files performed if given.
plot_fit : bool
If true, the fit for the extraction of t0 is shown together with the data.
assume_thermalization : bool
If True: If the first record divided by the distance between two measurements is larger than
1, it is assumed that this is due to thermalization and the first measurement belongs
to the first config (default).
If False: The config numbers are assumed to be traj_number // difference
"""
ls = []
@ -367,6 +377,11 @@ def extract_t0(path, prefix, dtr_read, xmin,
diffmeas = configlist[-1][-1] - configlist[-1][-2]
configlist[-1] = [item // diffmeas for item in configlist[-1]]
if kwargs.get('assume_thermalization', True) and configlist[-1][0] > 1:
warnings.warn('Assume thermalization and that the first measurement belongs to the first config.')
offset = configlist[-1][0] - 1
configlist[-1] = [item - offset for item in configlist[-1]]
if r_start[rep] is None:
r_start_index.append(0)
else: