Apparent Fine Tunings for Field Theories with Broken Space-Time Symmetries
arXiv:2212.08976 · doi:10.21468/SciPostPhys.16.2.045
Abstract
We exhibit a class of effective field theories that have hierarchically small Wilson coefficients for operators that are not protected by symmetries but are not finely tuned. These theories possess bounded target spaces and vacua that break space-time symmetries. We give a physical interpretation of these theories as generalized solids with open boundary conditions. We show that these theories realize unusual RG flows where higher dimensional (seemingly irrelevant) operators become relevant even at weak coupling. Finally, we present an example of a field theory whose vacuum energy relaxes to a hierarchically small value compared to the UV cut-off.
21 Pages
References in corpus (6)
- Low-Energy Quantum Effective Action for Relativistic Superfluids
- Effective Lagrangian and Topological Interactions in Supersolids
- Relaxing the Cosmological Constant: a Proof of Concept
- Naturalness: A Snowmass White Paper
- Integrating out beyond tree level and relativistic superfluids
- Rotating cosmologies: classical and quantum