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Utilities for fitting correlators in lattice QCD.

Project description

This module contains tools that facilitate least-squares fits, as functions
of time ``t``, of simulation (or other statistical) data for 2-point and
3-point correlators of the form::

Gab(t) = <b(t) a(0)>
Gavb(t,T) = <b(T) V(t) a(0)>

Each correlator is modeled using |Corr2| for 2-point correlators, or
|Corr3| for 3-point correlators in terms of amplitudes for each source
``a``, sink ``b``, and vertex ``V``, and the energies associated with each
intermediate state. The amplitudes and energies are adjusted in the
least-squares fit to reproduce the data; they are specified in a shared prior
(typically a dictionary).

An object of type |CorrFitter| describes a collection of correlators and is
used to fit multiple models to data simultaneously. Any number of
correlators may be described and fit by a single |CorrFitter| object.
|CorrFitter| objects can also be used to to extract the appropriate fit
data from |Dataset| objects.

This module has been used extensively for analyzing results from lattice
QCD simulations.

Project details


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6.0.7

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6.0.5

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6.0.4

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6.0.3

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6.0.2

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6.0.1

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6.0

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5.0.1

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5.0

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4.1.1

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4.1

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4.0

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3.7.1

This version
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3.7

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3.6.3

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3.6.1

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3.6

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3.5.1

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3.5

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3.4.2

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3.4.1

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3.4

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3.2.3

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Filename, size & hash SHA256 hash help File type Python version Upload date
corrfitter-3.7.tar.gz (1.7 MB) Copy SHA256 hash SHA256 Source None May 12, 2014

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