Speaker
Nicklas Ramberg
(SISSA)
Description
We analyze the impact of a finite theta angle on the first-order confinement PT in SU($N_{c}$) Yang-Mills theory, where CP violation arises at $\theta = \pi$
due to the multibranched structure of the Yang-Mills vacuum. Using holography and lattice QCD inputs, we show that at finite
$\theta\,, N_{c}$, the supercooling regime of the metastable deconfined phase is reduced. We also study the interplay between the confinement PT and the production of domain walls, elaborating on their stability and potential for gravitational wave (GW) emission. Finally, we showcase the possibility of two distinct GW sources: one from the confinement PT and another from domain wall annihilation.
| Other topic / keywords: | First Order Phase Transitions, Domain Walls. |
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Author
Nicklas Ramberg
(SISSA)