Fermionic spectral walls in kink collisions

Campos, J.G.F.; Mohammadi, A.; Queiruga, J.M.; Wereszczynski, A.; Zakrzewski, W.J.

Abstract

We show that a spectral wall, i.e., an obstacle in the dynamics of a bosonic soliton, which arises due to the transition of a normal mode into the continuum spectrum, exists after coupling the original bosonic model to fermions. This spectral wall can be experienced if the boson or fermion field is in an excited state. Furthermore, while passing through a spectral wall, an incoming kink-fermion bound state can be separated into purely bosonic kink, which continues to move to spatial infinity and a fermionic cloud that spreads in the region before the wall.

Citation

Campos, J., Mohammadi, A., Queiruga, J., Wereszczynski, A., & Zakrzewski, W. (2023). Fermionic spectral walls in kink collisions. Journal of High Energy Physics, 2023, Article 71 (2023). https://doi.org/10.1007/jhep01%282023%29071

• Journal Article Type: Article
• Acceptance Date: Dec 22, 2022
• Online Publication Date: Jan 16, 2022
• Publication Date: 2023
• Deposit Date: Apr 18, 2023
• Publicly Available Date: Apr 18, 2023
• Journal: Journal of High Energy Physics
• Print ISSN: 1126-6708
• Publisher: Scuola Internazionale Superiore di Studi Avanzati (SISSA)
• Peer Reviewed: Peer Reviewed
• Volume: 2023
• Article Number: 71 (2023)
• DOI: https://doi.org/10.1007/jhep01%282023%29071