| Issue |
EPL
Volume 151, Number 5, September 2025
|
|
|---|---|---|
| Article Number | 59001 | |
| Number of page(s) | 7 | |
| Section | Gravitation, cosmology and astrophysics | |
| DOI | https://doi.org/10.1209/0295-5075/adfd7d | |
| Published online | 04 September 2025 | |
Half-wormholes in a complex SYK model
Center for High Energy Physics, Peking University - No. 5 Yiheyuan Rd, Beijing 100871, PRC
Received: 23 April 2025
Accepted: 20 August 2025
Abstract
We compute the half-wormhole contribution in a complex SYK model with one time point by exact computations and saddle point analysis. The chemical potential significantly influences the computation and the relative magnitude of the half-wormhole. When the chemical potential is large compared to the random coupling, the disk dominates so that there is no wormhole and half-wormhole. When the chemical potential is relatively small we find out the wormhole and the half-wormhole contributions.
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