| Full text | |
| Author(s): |
Total Authors: 4
|
| Affiliation: | [1] Univ Salamanca, Dept Matemat Aplicada, Salamanca - Spain
[2] Univ Fed ABC, CMCC, Sao Paulo - Brazil
[3] Univ Salamanca, Dept Fis Fundamental, Salamanca - Spain
[4] Tomsk State Univ, Dept Phys, Tomsk - Russia
Total Affiliations: 4
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| Document type: | Journal article |
| Source: | EUROPEAN PHYSICAL JOURNAL C; v. 79, n. 6 JUN 20 2019. |
| Web of Science Citations: | 1 |
| Abstract | |
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 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. (AU) | |
| FAPESP's process: | 17/50294-1 - Quantum field theory in Dirac materials |
| Grantee: | Dmitry Vasilevich |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 16/03319-6 - Non perturbative methods in quantum theory and QFT and their application to actual physical problems |
| Grantee: | Dmitri Maximovitch Guitman |
| Support Opportunities: | Research Projects - Thematic Grants |