Speaker
Dr
Jacob Finkenrath
(german)
Description
We present an alternative method to the Generalized Eigenvalue Problem (GEVP) for extracting excited states.
The method is based on statistically sampling the space of possible set of parameters according to the $\chi^2$-value of each set of values.
This method is particularly suited when one has noisy data as is the case for some correlators at large times
such as in the scalar light qqbar channel. We will apply this method to the analysis of the $J^P = 0^+$ channels used in the search for
the $a_0$ particle and compare the results to the standard GEVP approach, pointing out
advantages and disadvantages of the method compare to the GEVP approach.
Primary author
Dr
Jacob Finkenrath
(german)
Co-authors
Prof.
Constantia Alexandrou
(University of Cyprus and The Cyprus Institute)
Mr
Joshua Berlin
(University of Frankfurt)
Prof.
Marc Wagner
(Goethe University Frankfurt)
Dr
Theodoros Leontiou
(Frederick University)
