Electric Polarizability of Charged Pions from nHYP Four-Point Functions
Abstract
Understanding a hadron's electric and magnetic polarizabilities allows one to access internal structural information. Traditionally, the external field two-point function method has been used to calculate polarizabilities. However, recent work has demonstrated the effectiveness of using four-point functions for computing polarizabilities of charged and neutral hadrons. Our previous study on the electric polarizability of the charged pion used a quenched Wilson action on a lattice with pion mass from 1100 MeV to 370 MeV. In this work, we employ a number of improvements, including a dynamical action (nHYP), smaller pion masses (220 MeV and 315 MeV), and a variable lattice size in order to extrapolate to infinite volume. Preliminary results are presented.
Cite
@article{arxiv.2603.15231,
title = {Electric Polarizability of Charged Pions from nHYP Four-Point Functions},
author = {Benjamin Luke and Sudip Shiwakoti and Shayan Nadeem and Andrei Alexandru and Walter Wilcox and Frank X. Lee},
journal= {arXiv preprint arXiv:2603.15231},
year = {2026}
}
Comments
10 pages, 10 figures, to be published in PoS. (LATTICE2025)