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Soliton Fermionic number from the heat kernel expansion

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arxiv 1905.09030 v2 pith:HNNTGOM6 submitted 2019-05-22 hep-th math-phmath.MP

classification hep-thmath-phmath.MP
keywords expansionheatnumberderivativefermionkernelspectralsystematic
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We consider different methods of calculating the (fractional) fermion number of solitons based on the heat kernel expansion. We derive a formula for the localized eta function a more systematic version of the derivative expansion for spectral assymmetry and that provides a more systematic version of the derivative expansion for spectral asymmetry and compute the fermion number in a multiflavour extension of the Goldstone-Wilczek model.We also propose an improved expansionof the heat kernelthat allows the tackling ofthe convergence issues and permits an automated computation of the coefficients

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Cited by 2 Pith papers

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

  1. Vortex Fractional Fermion Number through Heat Kernel methods and Edge States

    hep-th 2025-05 conditional novelty 6.0 of 10

    For fermions on an Abrikosov-Nielsen-Olesen vortex, the vacuum fermion number equals [sgn(m+e sqrt(2) v)+sgn(m-e sqrt(2) v)] n/4, and disk edge states carry charge e/2.

  2. Fractional Fermion Number and Hall Conductivity of Domain Walls

    hep-th 2019-08 conditional novelty 6.0 of 10

    Fermion number on a domain wall equals -(e/4π²) times the chiral angle difference times the magnetic flux, giving Chern-Simons level -Δθ/2π.

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