Speaker
Dr
Ryan Bignell
(Swansea University)
Description
The magnetic polarisability of the pion is calculated at a range of quark masses using the background field method. These results are facilitated by the use of the background-field corrected clover fermion action which removes the unphysical quark mass renormalisation due to the Wilson term in a background magnetic field. A magnetic-field dependent quark-propagator projector enables the ground state isolation necessary to construct the relativistic energy differences used to extract the magnetic polarisability. The excellent signal-to-noise properties of pion two-point correlation functions produces precise values for both the charged and neutral pion.
Primary authors
Dr
Ryan Bignell
(Swansea University)
Derek Leinweber
(CSSM, University of Adelaide)
Dr
Waseem Kamleh
(University of Adelaide)
