Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Abdellatif Abada"'
Autor:
Michael C. Birse, Abdellatif Abada
Publikováno v:
Physical Review D. 57:292-298
We investigate the time evolution of a system of quarks interacting with sigma and pion fields starting from an initial configuration consisting of a tube of hot quark plasma undergoing a boost-invariant longitudinal expansion. We work within the fra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::db26a2ee3d1ea8484835b78a6ecca0de
https://doi.org/10.1103/physrevd.57.292
https://doi.org/10.1103/physrevd.57.292
Autor:
Abdellatif Abada
Publikováno v:
Journal of Physics G: Nuclear and Particle Physics. 22:L57-L63
In the framework of the product ansatz as an approximation for the two-baryon system we review in details the derivation of the isoscalar nucleon-nucleon spin orbit potential coming from the sixth order term of the extended Skyrme model. We show that
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2afc0f99d3dccf97e3ca7ca957268ef2
https://doi.org/10.1088/0954-3899/22/5/001
https://doi.org/10.1088/0954-3899/22/5/001
Publikováno v:
Physics Letters B. 366:26-31
We study the radiative decays of $J^\pi=\frac{3}{2}^+$ baryons in the framework of the SU(3) collective approach to the Skyrme model. We present the predictions for the decay widths and the corresponding $E2/M1$ ratios. We find that all considered ra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c2334e152f5efe9aae55760b02eacf86
https://doi.org/10.1016/0370-2693(95)01353-9
https://doi.org/10.1016/0370-2693(95)01353-9
Publikováno v:
Physical Review C
Physical Review C, American Physical Society, 1995, 52, pp.2504-2513
Physical Review C, American Physical Society, 1995, 52, pp.2504-2513
We investigate the role of the effective nucleon-nucleon interaction in the description of giant dipole resonances in hot nuclei. For this purpose we calculate the response function of hot nuclear matter to a small isovector external perturbation usi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e97cfc3e29ab5aaeea3795877a713893
https://doi.org/10.1103/physrevc.52.2504
https://doi.org/10.1103/physrevc.52.2504
Publikováno v:
Physics Letters B. 353:20-26
Within the Nambu--Jona--Lasinio model strange degrees of freedom are incorporated into the soliton picture using the collective approach of Yabu and Ando. The form factors of the nucleon associated with the nonet vector current are extracted. The num
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f5e7884222fe1190b26dd759965a6921
https://doi.org/10.1016/0370-2693(95)00534-r
https://doi.org/10.1016/0370-2693(95)00534-r
Autor:
Jörg Aichelin, Abdellatif Abada
Publikováno v:
Physical Review Letters. 74:3130-3133
We investigate the time evolution of a quark antiquark plasma by solving numerically the relativistic transport equations derived on the Hartree level from the Nambu-Jona-Lasinio model. We find that the phase transition in the expanding quark antiqua
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::583c83465aab4384b3c9b77611d5865f
https://doi.org/10.1103/physrevlett.74.3130
https://doi.org/10.1103/physrevlett.74.3130
Autor:
D. Vautherin, Abdellatif Abada
Publikováno v:
Physics Letters B
Physics Letters B, Elsevier, 1991, 258, pp.1-5
Physics Letters B, Elsevier, 1991, 258, pp.1-5
Periodic orbits of the time-dependent Hartree-Fock equations are constructed by performing a perturbation expansion in the amplitude of the collective vibrations. Applications are presented in the case of octupole vibrations in oxygen-16. A second or
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3a2a52dde394257cbd5509464ea57b73
https://doi.org/10.1016/0370-2693(91)91198-5
https://doi.org/10.1016/0370-2693(91)91198-5
Publikováno v:
Physical review. D, Particles and fields. 54(6)
It is found that the extra quantum constraints to the spinor components of the equal-time Wigner function given in a recent paper by Zhuang and Heinz should vanish identically. We point out here the origin of the error and give an interpretation of t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::af768edd48099f0059082d34ec24e91a
https://pubmed.ncbi.nlm.nih.gov/10021095
https://pubmed.ncbi.nlm.nih.gov/10021095
Autor:
Michael C. Birse, Abdellatif Abada
In the framework of the linear sigma model, we study the time evolution of a system of classical $\sigma$ and pion fields coupled to quarks. For this purpose we solve numerically the classical transport equation for relativistic quarks coupled to the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::39de2162b66134cc3ba90874d66add76
Autor:
Abdellatif Abada
As a first step toward circumventing the difficulty to obtain an attractive isospin-independent NN spin-orbit force from Skyrme-type models involving only pions, we investigate an improved Skyrme Lagrangian that incorporates the scalar-isoscalar meso
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3e28b2a87f756b40a5557b880804177e