Ultra-high energy probes of classicalization

Gia Dvali, Cesar Gomez

    Research output: Contribution to journalArticlepeer-review


    Classicalizing theories are characterized by a rapid growth of the scattering cross section. This growth converts these sort of theories in interesting probes for ultra-high energy experiments even at relatively low luminosity, such as cosmic rays or Plasma Wakefield accelerators. The microscopic reason behind this growth is the production of N-particle states, classicalons, that represent self-sustained lumps of soft Bosons. For spin-2 theories this is the quantum portrait of what in the classical limit are known as black holes. We emphasize the importance of this quantum picture which liberates us from the artifacts of the classical geometric limit and allows to scan a much wider landscape of experimentally-interesting quantum theories. We identify a phenomenologically-viable class of spin-2 theories for which the growth of classicalon production cross section can be as efficient as to compete with QCD cross section already at 100TeV energy, signaling production of quantum black holes with graviton occupation number N ∼ 10 4.

    Original languageEnglish (US)
    Article number15
    JournalJournal of Cosmology and Astroparticle Physics
    Issue number7
    StatePublished - Jul 2012


    • cosmic ray experiments
    • cosmic ray theory
    • modified gravity
    • quantum black holes

    ASJC Scopus subject areas

    • Astronomy and Astrophysics


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