Zobrazeno 1 - 10
of 109
pro vyhledávání: '"Ribeiro, J E"'
Autor:
Bicudo, P., Ribeiro, J. E.
A metastable phase has important physical implications, since it may form vacuum bubbles detectable experimentally, whereas an unstable vacuum instantly explodes. It is well known, due to chiral symmetry breaking, there are at least two very differen
Externí odkaz:
http://arxiv.org/abs/1912.11476
Publikováno v:
Phys.Usp. 60 (2017) 667-693, Usp.Fiz.Nauk 187 (2017) 715-743
Various aspects of the Generalised Nambu-Jona-Lasinio model for QCD in four dimensions are reviewed. The properties of mesonic excitations are discussed in detail, with special attention paid to the chiral pion. The spontaneous chiral symmetry breaki
Externí odkaz:
http://arxiv.org/abs/1707.04886
We propose a model for the quark-antiquark interaction in Minkowski space using the Covariant Spectator Theory. We show that with an equal-weighted scalar-pseudoscalar structure for the confining part of our interaction kernel the axial-vector Ward-T
Externí odkaz:
http://arxiv.org/abs/1508.04304
Autor:
Ribeiro, A. G., Silva, R. S., Costa, F. S., Silva, E. G., Santos Ribeiro, J. E., Saraiva, E. P., Costa, F. G. P., Guerra, R. R.
Publikováno v:
Animal Production Science; 2024, Vol. 64 Issue 12, p1-13, 13p
Akademický článek
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Publikováno v:
AIP Conf. Proc. 1701, 040003 (2016)
We present a model for the quark-antiquark interaction formulated in Minkowski space using the Covariant Spectator Theory. The quark propagators are dressed with the same kernel that describes the interaction between different quarks. By applying the
Externí odkaz:
http://arxiv.org/abs/1411.7319
Publikováno v:
Phys.Rev. D90 (2014) 096008
The pi-pi scattering amplitude calculated with a model for the quark-antiquark interaction in the framework of the Covariant Spectator Theory (CST) is shown to satisfy the Adler zero constraint imposed by chiral symmetry. The CST formalism is establi
Externí odkaz:
http://arxiv.org/abs/1408.1625
Autor:
Antonov, D., Ribeiro, J. E. F. T.
Publikováno v:
PoS QCD-TNT-II:004,2011
Radial excitations of the quark-antiquark string sweeping the Wilson-loop area are considered in the framework of the effective-action formalism. Identifying these excitations with the daughter Regge trajectories, we find corrections which they produ
Externí odkaz:
http://arxiv.org/abs/1103.5984
Publikováno v:
JETP Lett.92:721-725,2010; Pisma Zh.Eksp.Teor.Fiz.92:803-807,2010
Formation of stable domains filled with strongly correlated coherent quark matter is discussed in general terms and is exemplified further in the framework of the Generalised Nambu-Jona-Lasinio model. It is argued that such domains, if exist in the U
Externí odkaz:
http://arxiv.org/abs/1011.3036
We suggest the possibility of creation in the early Universe of stable domains of radius a few kilometers wide, formed by coherently excited states of $\pi$-mesons. Such domains appear dark to an external observer, since the decay rate of the said co
Externí odkaz:
http://arxiv.org/abs/1008.3638