Dualities, Helicity Amplitudes, and Little Conformal Symmetry

  • Kitran Macey M. Colwell

Part of the Springer Theses book series (Springer Theses)

Table of contents

  1. Front Matter
    Pages i-xv
  2. Kitran Macey M. Colwell
    Pages 1-28
  3. Kitran Macey M. Colwell
    Pages 29-35
  4. Kitran Macey M. Colwell
    Pages 37-45
  5. Kitran Macey M. Colwell
    Pages 47-71
  6. Kitran Macey M. Colwell
    Pages 73-82
  7. Back Matter
    Pages 83-107

About this book


This thesis develops two exciting areas of particle physics research. It applies the recent new insights about the usefulness of helicity amplitudes in understanding gauge theory to the long-standing effort to understand theories with both electric and magnetic charges. It is known that for some supersymmetric theories there is an exact duality that relates two descriptions of the physics, one where the electric charges are weakly coupled and another where the electric charges are strongly coupled. The calculations in this thesis suggest that this duality can also hold in the low-energy limit of nonsupersymmetric gauge theories. The idea of addressing the hierarchy problem of the standard model Higgs mechanism using conformal symmetry is also explored. Analogously to “Little Higgs” models, where divergences are cancelled only at one-loop order, models are studied that have infrared conformal fixed points which related gauge and Yukawa couplings, allowing for a cancellation between seemingly unrelated quantum loop diagrams.


nonsupersymmetric gauge theories Little Higgs models quantum loop diagrams electromagnetic duality spinor helicity formalism non-abelian monopoles helicity amplitudes little conformal symmetry

Authors and affiliations

  • Kitran Macey M. Colwell
    • 1
  1. 1.PhysicsDiablo Valley CollegePleasant HillUSA

Bibliographic information

  • DOI
  • Copyright Information Springer International Publishing AG 2017
  • Publisher Name Springer, Cham
  • eBook Packages Physics and Astronomy
  • Print ISBN 978-3-319-67391-2
  • Online ISBN 978-3-319-67392-9
  • Series Print ISSN 2190-5053
  • Series Online ISSN 2190-5061
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