Deconstruction of unparticles

2007/05/22 by Mikhail Stephanov, M. A. Stephanov · 9 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1103/physrevd.76.035008

published as Phys.Rev.D76:035008,2007 · 5 pages

arxiv created 2007/05/22 · openalex publication_date 2007/08/31 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We discuss properties of hypothetical scale invariant (unparticle) matter by viewing it as a tower of massive particles. We show how peculiar properties of unparticles emerge in the limit when the mass spacing parameter \ensuremathΔ vanishes. We explain why the unparticle cannot decay in this limit and how, for finite \ensuremathΔ, the decays manifest themselves in a relation between the reconstructed invariant mass and vertex displacement. We describe a model field theory in AdS₅ which explicitly implements the deconstruction procedure by truncating the extra dimension to size of order 1/\ensuremathΔ.

Citations

• Large Mass Hierarchy from a Small Extra Dimension
• QCD and a Holographic Model of Hadrons
• The Large N Limit of Superconformal Field Theories and Supergravity

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• PHASE DIAGRAM OF STRONGLY INTERACTING THEORIES