Titre :	الدراسة الديناميكية لنموذج الطاقة المظلمة اللزجة في الكوسمولوجيا الكلاسيكية و الجاذبية الكوانتية الحلقية.
Type de document :	texte imprimé
Auteurs :	سارة بن الشيخ, Auteur ; نور الدين مباركي, Directeur de thèse
Editeur :	جامعة الإخوة منتوري قسنطينة
Année de publication :	2018
Importance :	118 ورقة.
Format :	30 سم.
Note générale :	2نسخ موجودة مكتبة المركزية
Langues :	Arabe (ara)
Catégories :	Arabe الفيزياء
Tags :	للزوجة السائبة  الجاذبية الحلقية الكمية  الطاقة المظلمة  المادة المظلمة  Bulk Viscosity  Loop Quantum Gravity  Dark Energy  Dark matter  seconde viscosité  gravité quantique des boucles  énergie sombre  matière sombre
Index. décimale :	530 الفيزياء
Résumé :	In this thesis we have suggested two cosmological models.in the first one we have studied the dynamical behaviors and stability properties of a flat space FRW universe filled with pressureless dark matter and viscous dark energy in the context of standard classical and loop quantum cosmology. Assuming that the dark energy has a constant bulk viscosity, it is found that the bulk viscosity effects influence only the quintessence model case leading to the existence of a viscous late time attractor solution of de-Sitter type, whereas, the quantum geometry effects influence the phantom model case where the big rip singularity is removed. Moreover, compared with the more recent data, our results of the Hubble parameter as a function of the redshift are in a good agreement. However, in the second model we have studied the dynamical behaviors and stability properties of a flat space FRW universe filled with pressureless dark matter and viscous dark energy in the context of loop quantum cosmology. Assuming that the dark energy has bulk viscosity in the general form, we have found there exists under some appropriate parameters a stable late time viscous dark energy dominated solution of de Sitter type. the problem of future singularity (big rip) will never occur in this scenario.
Diplôme :	Doctorat
En ligne :	../theses/physique/ABEN4322.pdf
Format de la ressource électronique :	pdf
Permalink :	index.php?lvl=notice_display&id=10880

الدراسة الديناميكية لنموذج الطاقة المظلمة اللزجة في الكوسمولوجيا الكلاسيكية و الجاذبية الكوانتية الحلقية. [texte imprimé] / سارة بن الشيخ, Auteur ; نور الدين مباركي, Directeur de thèse . - جامعة الإخوة منتوري قسنطينة, 2018 . - 118 ورقة. ; 30 سم.
2نسخ موجودة مكتبة المركزية

Langues : Arabe (ara)

Catégories :	Arabe الفيزياء
Tags :	للزوجة السائبة  الجاذبية الحلقية الكمية  الطاقة المظلمة  المادة المظلمة  Bulk Viscosity  Loop Quantum Gravity  Dark Energy  Dark matter  seconde viscosité  gravité quantique des boucles  énergie sombre  matière sombre
Index. décimale :	530 الفيزياء
Résumé :	In this thesis we have suggested two cosmological models.in the first one we have studied the dynamical behaviors and stability properties of a flat space FRW universe filled with pressureless dark matter and viscous dark energy in the context of standard classical and loop quantum cosmology. Assuming that the dark energy has a constant bulk viscosity, it is found that the bulk viscosity effects influence only the quintessence model case leading to the existence of a viscous late time attractor solution of de-Sitter type, whereas, the quantum geometry effects influence the phantom model case where the big rip singularity is removed. Moreover, compared with the more recent data, our results of the Hubble parameter as a function of the redshift are in a good agreement. However, in the second model we have studied the dynamical behaviors and stability properties of a flat space FRW universe filled with pressureless dark matter and viscous dark energy in the context of loop quantum cosmology. Assuming that the dark energy has bulk viscosity in the general form, we have found there exists under some appropriate parameters a stable late time viscous dark energy dominated solution of de Sitter type. the problem of future singularity (big rip) will never occur in this scenario.
Diplôme :	Doctorat
En ligne :	../theses/physique/ABEN4322.pdf
Format de la ressource électronique :	pdf
Permalink :	index.php?lvl=notice_display&id=10880