Pions and Excited Scalars in Minkowski Space DSBSE Formalism

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F15%3A00450507" target="_blank" >RIV/61389005:_____/15:00450507 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1007/s10773-015-2525-2" target="_blank" >http://dx.doi.org/10.1007/s10773-015-2525-2</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s10773-015-2525-2" target="_blank" >10.1007/s10773-015-2525-2</a>

Result language
angličtina
Original language name
Pions and Excited Scalars in Minkowski Space DSBSE Formalism
Original language description
We present the solution of Schwinger-Dyson and Bethe-Salpeter equation (BSE) for a light flawour non-singlet spinless meson in Minkowski space. The equations are solved in momentum space without the use of the auxiliary Euclidean space. To exhibit that Minkowski space non perturbative calculations are actually possible is the main purpose of presented paper. According to confinement, the quark propagator is regular in momentum space, which allows us to look for the BSE solution directly in the Minkowskimomentum space. We find the Minkowski space solution for confining theories is not only numerically accessible, but also provides a reasonable description of the pseudoscalar meson system. However, in the case of scalar mesons, the model is less reliable and we get more extra light states then observed experimentally.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BE - Theoretical physics
OECD FORD branch
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Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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