Gravitating Skyrmions with localized fermions
Abstract We consider self-gravitating Skyrmions in the presence of Dirac fermions, that carry spin and isospin. By varying the gravitational and the Yukawa coupling constants, we investigate the spectral flow of the fermion eigenvalue associated with a zero mode in the absence of gravity. We demonstrate that the backreaction of the fermion can strongly influence the Skyrmion-fermion configurations. In particular, the energy conditions may be violated, and regular anti-gravitating asymptotically flat solutions with negative ADM mass may emerge.
Authors
- Jutta Kunz (ORCID: https://orcid.org/0000-0001-7990-8713)
- Yakov Shnir (ORCID: https://orcid.org/0000-0002-9159-2675)
- Vladimir Folomeev (ORCID: https://orcid.org/0000-0003-4160-5850)
- Vladimir Dzhunushaliev (ORCID: https://orcid.org/0000-0001-9479-5606)
Institutions
- Tomsk State University of Control Systems and Radio-Electronics (RU)
- Carl von Ossietzky Universität Oldenburg (DE)
- Al-Farabi Kazakh National University (KZ)
- Institute for Advanced Study (DE)
Publication Details
- Journal
- The European Physical Journal C
- Published
- 2025-04-07
- DOI
- https://doi.org/10.1140/epjc/s10052-025-14074-4
- Citations
- 2
- Primary Topic
- Quantum Chromodynamics and Particle Interactions
- Type
- article
- Field-Weighted Citation Impact
- 3.74
Funders
- Deutsche Forschungsgemeinschaft