Meson Properties in Partially Quenched Effective Field Theory
(2006)- Abstract
- 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... (More) - 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. (Less) - Abstract (Swedish)
- Popular Abstract in Swedish
Masskorrektioner och sönderfallskonstanter för lätta mesoner har beräknats i kiral störningsteori med extra sjökvarkar.
Beräkningarna för de laddade mesonmassorna har genomförts till tredje ordningen, först för degenererade kvarkmassor, och sedan, i ett andra projekt, för det generella fallet. Ytterligare en beräkning visar att en resummering av ofysikaliska dubbelpoler hos de neutrala propagatorerna i teorin med extra sjökvarkar möjliggör för bestämmande av lågenergikonstanterna som behövs för att beräkna den fysikaliska massan hos eta-mesonen.
Slutligen har elektromagnetiska korrektioner inkluderats i teorin i form av dynamiska fält, och hur de påverkar... (More) - Popular Abstract in Swedish
Masskorrektioner och sönderfallskonstanter för lätta mesoner har beräknats i kiral störningsteori med extra sjökvarkar.
Beräkningarna för de laddade mesonmassorna har genomförts till tredje ordningen, först för degenererade kvarkmassor, och sedan, i ett andra projekt, för det generella fallet. Ytterligare en beräkning visar att en resummering av ofysikaliska dubbelpoler hos de neutrala propagatorerna i teorin med extra sjökvarkar möjliggör för bestämmande av lågenergikonstanterna som behövs för att beräkna den fysikaliska massan hos eta-mesonen.
Slutligen har elektromagnetiska korrektioner inkluderats i teorin i form av dynamiska fält, och hur de påverkar massor och sönderfallskonstanter har sedan beräknats till andra ordningen. Konsekvenser av detta för anpassning av dessa resultat till numeriska simuleringar av kvantkromodynamik har också studerats. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/547648
- author
- Danielsson, Niclas LU
- supervisor
- opponent
-
- Professor Golterman, Maarten, San Francisco State University, USA
- organization
- publishing date
- 2006
- type
- Thesis
- publication status
- published
- subject
- 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
- pages
- 185 pages
- defense location
- Lecture hall F, Fysicum, Sölvegatan 14A, Lunds Tekniska Högskola
- defense date
- 2006-12-19 10:15:00
- ISBN
- 91-628-7012-2
- language
- English
- LU publication?
- yes
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Mathematical Physics (Faculty of Technology) (011040002)
- id
- d76f2f99-ed14-4abd-a069-389fdedc2610 (old id 547648)
- date added to LUP
- 2016-04-04 13:56:26
- date last changed
- 2018-11-21 21:17:18
@phdthesis{d76f2f99-ed14-4abd-a069-389fdedc2610,
abstract = {{Mass corrections and decay constants for light mesons have been calculated in Partially Quenched Chiral Perturbation Theory.<br/><br>
<br/><br>
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.<br/><br>
<br/><br>
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.}},
author = {{Danielsson, Niclas}},
isbn = {{91-628-7012-2}},
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}},
language = {{eng}},
school = {{Lund University}},
title = {{Meson Properties in Partially Quenched Effective Field Theory}},
year = {{2006}},
}