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Improved lattice spectroscopy of minimal walking technicolor

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  • Francis Bursa
  • Luigi Del Debbio
  • David Henty
  • Eoin Kerrane
  • Biagio Lucini
  • Agostino Patella
  • Claudio Pica
  • Thomas Pickup
  • Antonio Rago

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http://prd.aps.org/abstract/PRD/v84/i3/e034506
Original languageEnglish
Article number034506
Number of pages20
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume84
Issue number3
DOIs
Publication statusPublished - 1 Aug 2011

Abstract

We present a numerical study of spectroscopic observables in the SU(2) gauge theory with two adjoint fermions using improved source and sink operators. We compare in detail our improved results with previous determinations of masses that used point sources and sinks and we investigate possible systematic effects in both cases. Such comparison enables us to clearly assess the impact of a short temporal extent on the physical picture, and to investigate some effects due to the finite spatial box. While confirming the IR-conformal behaviour of the theory, our investigation shows that in order to make firm quantitative predictions, a better handle on finite size effects is needed.

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