| Issue |
EPL
Volume 137, Number 3, February 2022
|
|
|---|---|---|
| Article Number | 34002 | |
| Number of page(s) | 6 | |
| Section | Nuclear and plasma physics, particles and fields | |
| DOI | https://doi.org/10.1209/0295-5075/ac535e | |
| Published online | 19 April 2022 | |
Yang-Mills instantons in an asymptotically locally flat background: Taub-NUT vs. Taub-Bolt
Departamento de Matemática da Universidade de Aveiro and Centre for Research and Development in Mathematics and Applications (CIDMA) - Campus de Santiago, 3810-183 Aveiro, Portugal
(a) eugen.radu@ua.pt (corresponding author)
Received: 25 October 2021
Accepted: 9 February 2022
We present arguments for the existence of a one-parameter family of self-dual Yang-Mills instantons in the background of Taub-NUT and Taub-Bolt spaces. These solutions are finite everywhere and generically carry a non-integer Pontryagin charge. The Taub-NUT space configurations can be considered as interpolating (when varying the NUT parameter) between the Prasad-Sommerfield and BPST instantons.
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