Comments on the Hierarchy Problem in Effective Theories
arXiv:1404.5823 · doi:10.1007/JHEP07(2014)155
Abstract
We discuss aspects of the hierarchy problem in effective theories with light scalars and a large, physical ultraviolet (UV) cutoff. We make two main points: (1) The (naive) fine-tuning observed in an effective theory does not automatically imply that the UV completion is fine tuned. Instead, it gives a type of upper bound on the severity of the actual tuning in the UV completion; the actual tuning can be less severe than the naive tuning or even non-existent. (2) Within an effective theory, there appear to be two types of parameter relations that can alleviate the sensitivity of the scalar mass to the cutoff --- relationships among dimensionless couplings or relationships among dimensionful parameters. Supersymmetric models provide symmetry-motivated examples of the former, while scale-invariant models give symmetry-motivated examples of the latter.
13 pages
References in corpus (12)
- Conformal Symmetry and the Standard Model
- Quantum scale invariance, cosmological constant and hierarchy problem
- A solution to the hierarchy problem from an almost decoupled hidden sector within a classically scale invariant theory
- Scale invariant extension of the standard model with strongly interacting hidden sector
- Electroweak Higgs as a pseudo-Goldstone boson of broken scale invariance
- The Minimal Scale Invariant Extension of the Standard Model
- Effective Action, Conformal Anomaly and the Issue of Quadratic Divergences
- Neutrino mass in radiatively-broken scale-invariant models
- Criteria for Natural Hierarchies
- Cosmological Signatures of a UV-Conformal Standard Model
- Expectations for LHC from Naturalness: Modified vs. SM Higgs Sector
- Scale invariance and the electroweak symmetry breaking
Cited by in corpus (8)
- Higgs inflation from Standard Model criticality
- A study of electroweak vacuum metastability with a singlet scalar dark matter
- Predictions on mass of Higgs portal scalar dark matter from Higgs inflation and flat potential
- Majorana dark matter in a classically scale invariant model
- Low temperature electroweak phase transition in the Standard Model with hidden scale invariance
- Naturalness made easy: two-loop naturalness bounds on minimal SM extensions
- Standard Model with hidden scale invariance and light dilaton
- Scale Invariant Top Condensate