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Photo of Johan Bijnens

Johan Bijnens

Professor

Photo of Johan Bijnens

Meson Properties in Partially Quenched Effective Field Theory

Author

  • Niclas Danielsson

Summary, in English

Mass corrections and decay constants for light mesons have been calculated in Partially Quenched Chiral Perturbation Theory.



The calculations of the charged meson masses have been performed to third order, first for degenerate quark masses, and then, in a second project, for the general case. Another calculation also shows that a resummation of unphysical double poles in the neutral propagators of the partially quenched theory allows for the determination of the low-energy constants needed to determine the physical eta mass.



Finally, electromagnetic corrections are included into the theory as dynamical fields and their effects on the masses and decay constants of the charged mesons have been calculated to second order. Some consequences concerning the fitting of these results to Lattice QCD simulations are also considered.

Department/s

  • Mathematical Physics

Publishing year

2006

Language

English

Document type

Dissertation

Topic

  • Physical Sciences

Keywords

  • statistical physics
  • gravitation
  • relativity
  • quantum mechanics
  • classical mechanics
  • Mathematical and general theoretical physics
  • Fysik
  • Chiral Perturbation Theory
  • masses
  • decay constants
  • Physics
  • electromagnetic interactions
  • Strong interactions
  • pseudoscalar mesons
  • thermodynamics
  • Matematisk och allmän teoretisk fysik
  • klassisk mekanik
  • kvantmekanik
  • relativitet
  • statistisk fysik
  • termodynamik

Status

Published

Supervisor

  • Johan Bijnens

ISBN/ISSN/Other

  • ISBN: 91-628-7012-2

Defence date

19 December 2006

Defence time

10:15

Defence place

Lecture hall F, Fysicum, Sölvegatan 14A, Lunds Tekniska Högskola

Opponent

  • Maarten Golterman (Professor)