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Charged pion electric polarizability from lattice QCD

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arxiv 2105.06906 v1 pith:OJD44HDT submitted 2021-05-14 hep-lat hep-exhep-phnucl-th

Charged pion electric polarizability from lattice QCD

classification hep-lat hep-exhep-phnucl-th
keywords chargedelectricfieldpionbackgroundcorrelatorsextractlattice
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We present a calculation of the charged pion electric polarizability using the background field method. To extract the mass-shift induced by the electric field for the accelerated charged particle we fit the lattice QCD correlators using correlators derived from an effective model. The methodology outlined in this study (boundary conditions, fitting procedure, etc.) is designed to ensure that the results are invariant under gauge transformations of the background field. We apply the method to four $N_f=2$ dynamical ensembles to extract $\alpha_{\pi^\pm}$ at pion mass of $315$ MeV.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Hadronic exceptional points

    hep-ph 2026-06 unverdicted novelty 7.0

    Imaginary magnetic fields induce exceptional points in neutral meson mass spectra computed via hadronic effective Lagrangian and constituent quark models, separating real and complex eigenvalue regimes.

  2. Charged kaon electric polarizability from four-point functions in lattice QCD

    hep-lat 2026-04 unverdicted novelty 6.0

    Lattice QCD on quenched 24^3 x 48 lattices yields charged kaon electric polarizability α_E = (0.988 ± 0.534) × 10^{-4} fm³ and charge radius squared 0.3303 ± 0.0028 fm² after physical pion-mass extrapolation.