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Título
Soliton fermionic number from the heat kernel expansion
Autor(es)
Materia
Fermion number of solitons
Heat kernel expansion
Spectral asymmetry
Goldstone–Wilczek model
Clasificación UNESCO
22 Física
Fecha de publicación
2019-06-20
Citación
Alonso Izquierdo, A., Fresneda, R., Guilarte, J.M. et al. Soliton fermionic number from the heat kernel expansion. Eur. Phys. J. C 79, 525 (2019). https://doi.org/10.1140/epjc/s10052-019-7041-8
Resumen
[EN] 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 𝜂 function that provides a more systematic version of the derivative expansion for spectral asymmetry and compute the fermion number in a multi flavor extension of the Goldstone–Wilczek model. We also propose an improved expansion of the heat kernel that allows the tackling of the convergence issues and permits an automated computation of the coefficients.
URI
ISSN
1434-6044
DOI
10.1140/epjc/s10052-019-7041-8
Versión del editor
Colecciones
- MATHPHYS. Artículos [94]