Theoretical Physics Journal Club – Niels Bohr Institute - University of Copenhagen

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Theoretical Physics Journal Club

Hael Collins will discuss Unparticles:

Title:  Scaleless scalar fields
This talk provides a basic introduction to unparticles.  Its main goal is to explain what unparticles are and how they behave, rather than to summarize their phenomenological applications.  I begin with a familiar derivation of the scalar propagator for a massive particle, which generalizes readily to the case of the unparticle.  I shall then mention a few more details about unparticles---how they can arise as low energy effective degrees of freedom and how they behave in radiative corrections---before concluding with a warning about generalizing them to higher spin fields.