Black Hole solutions in Einstein-Gauss-Bonnet theory with a self-interacting scalar field

Απλή σελίδα τεκμηρίου
dc.contributor.authorKatsoulas, Theodorosel
dc.contributor.authorΚατσούλας, Θεόδωρος
dc.date.accessioned2023-03-14T13:49:03Z
dc.date.available2023-03-14T13:49:03Z
dc.identifier.urihttps://olympias.lib.uoi.gr/jspui/handle/123456789/32503
dc.identifier.urihttp://dx.doi.org/10.26268/heal.uoi.12314
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 United States*
dc.rightsinfo:eu-repo/semantics/openAccess*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/us/*
dc.subjectModified theories of gravityen
dc.titleBlack Hole solutions in Einstein-Gauss-Bonnet theory with a self-interacting scalar fielden
dc.titleΛύσεις μελανών οπών στην θεωρία Einstein-Gauss-Bonnet με ένα αυτο-αλληλεπιδρών βαθμωτό πεδίοel
dc.typemasterThesisen
heal.abstractGravity is one of the fundamental interactions in nature. The first description of gravity was provided by Newton’s theory of gravity. In the early 20 th century Albert Einstein formulated a new theory for gravity, the General Theory of Relativity, which included Newtonian theory in the limit of the weak gravitational field. It has been experimentally proven that General Relativity describes the gravitational interactions with high precision and, in addition, predicts new gravitational objects such as Black Holes. However, being a classical theory, General Relativity is not considered to be the final theory for gravity. Due to its failure to describe the gravitational phenomena at high energies it is necessary to formulate a quantum theory of gravity. Since the 80’s the so-called generalized theories of gravity, namely superstring effective theories at low energies, Lovelock’s theory and Horndeski’s scalar-tensor theories, have emerged. These theories can embed in their framework the gravitational degrees of freedom of General Relativity with scalars, fermions and gauge fields as well as higher-order curvature terms. In the context of these theories, new black-hole solutions can be found which differentiate from GR’s solutions and violate the traditional No-Hair Theorem. In this thesis, we study the Einstein-scalar-Gauss-Bonnet theories which comprise a subclass of generalized gravitational theories. In their action, they include the usual Einstein-Hilbert term, the quadratic gravitational Gauss-Bonnet term and a non minimally coupled self-interacting scalar field. We investigate the existence of new black hole solutions for different coupling functions between the scalar field and the Gauss- Bonnet term and different forms of the scalar potential. Especially we emphasize on the Higgs potential, the Coleman-Weinberg potential and the Starobinsky type potential. We look for asymptotically flat, de-Sitter (dS) or Anti-de-Sitter (AdS) black-hole solutions, and discuss their domain of existence and physical features in each case.en
heal.academicPublisherΠανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Φυσικήςel
heal.academicPublisherIDuoiel
heal.accessfreeel
heal.advisorNameΚαντή, Παναγιώταel
heal.classificationTheoretical physicsen
heal.committeeMemberNameΤαμβάκης, Κυριάκοςel
heal.committeeMemberNameΡίζος, Ιωάννηςel
heal.committeeMemberNameΚαντή, Παναγιώτα
heal.dateAvailable2023-03-14T13:50:04Z
heal.fullTextAvailabilitytrue
heal.languageenel
heal.numberOfPages88 σ.el
heal.publicationDate2023-03-06
heal.recordProviderΠανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημώνel
heal.typemasterThesisel
heal.type.elΜεταπτυχιακή εργασίαel
heal.type.enMaster thesisen

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