TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhys.17.2.031
TI  - Spontaneously broken (-1)-form U(1) symmetries
PY  - 2024/08/01
UR  - https://www.scipost.org/SciPostPhys.17.2.031
JF  - SciPost Physics
JA  - SciPost Phys.
VL  - 17
IS  - 2
SP  - 031
A1  - Aloni, Daniel
AU  - García-Valdecasas, Eduardo
AU  - Reece, Matthew
AU  - Suzuki, Motoo
AB  - Spontaneous breaking of symmetries leads to universal phenomena. We extend this notion to $(-1)$-form U(1) symmetries. The spontaneous breaking is diagnosed by a dependence of the vacuum energy on a constant background field $\theta$, which can be probed by the topological susceptibility. This leads to a reinterpretation of the Strong CP problem as arising from a spontaneously broken instantonic symmetry in QCD. We discuss how known solutions to the problem are unified in this framework and explore some, so far unsuccessful, attempts to find new solutions.
ER  -

@Article{10.21468/SciPostPhys.17.2.031,
	title={{Spontaneously broken (-1)-form U(1) symmetries}},
	author={Daniel Aloni and Eduardo García-Valdecasas and Matthew Reece and Motoo Suzuki},
	journal={SciPost Phys.},
	volume={17},
	pages={031},
	year={2024},
	publisher={SciPost},
	doi={10.21468/SciPostPhys.17.2.031},
	url={https://scipost.org/10.21468/SciPostPhys.17.2.031},
}