prikaz prve stranice dokumenta Field theoretical models of nonsingular compact objects
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doctoral thesis
Field theoretical models of nonsingular compact objects
Zagreb: University of Zagreb, Faculty of Science, 2013. urn:nbn:hr:217:766282
Marunović, Anja
University of Zagreb
Faculty of Science
Department of Physics

Institutional repository: Repository of the Faculty of Science

Cite this document

Marunović, A. (2013). Field theoretical models of nonsingular compact objects (Doctoral thesis). Zagreb: University of Zagreb, Faculty of Science. Retrieved from https://urn.nsk.hr/urn:nbn:hr:217:766282

Marunović, Anja. "Field theoretical models of nonsingular compact objects." Doctoral thesis, University of Zagreb, Faculty of Science, 2013. https://urn.nsk.hr/urn:nbn:hr:217:766282

Marunović, Anja. "Field theoretical models of nonsingular compact objects." Doctoral thesis, University of Zagreb, Faculty of Science, 2013. https://urn.nsk.hr/urn:nbn:hr:217:766282

Marunović, A. (2013). 'Field theoretical models of nonsingular compact objects', Doctoral thesis, University of Zagreb, Faculty of Science, accessed 19 December 2024, https://urn.nsk.hr/urn:nbn:hr:217:766282

Marunović A. Field theoretical models of nonsingular compact objects [Doctoral thesis]. Zagreb: University of Zagreb, Faculty of Science; 2013 [cited 2024 December 19] Available at: https://urn.nsk.hr/urn:nbn:hr:217:766282

A. Marunović, "Field theoretical models of nonsingular compact objects", Doctoral thesis, University of Zagreb, Faculty of Science, Zagreb, 2013. Available at: https://urn.nsk.hr/urn:nbn:hr:217:766282

Metadata
TitleField theoretical models of nonsingular compact objects
Title (croatian)Modeli nesingularnih kompaktnih objekata u teoriji polja
AuthorAnja Marunović
MBZ: 15238890128
MentorDubravko Horvat (mentor)
Committee memberNevenko Bilić (predsjednik povjerenstva)
Committee memberDubravko Horvat (član povjerenstva)
Committee memberVernesa Smolčić (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Science
(Department of Physics)
Zagreb
Defense date and country2013-06-19, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Physics
Universal decimal classification
(UDC)		53 - Physics
Abstract
A method for testing linear stability of the anisotropic structures with the de Sitter interior is proposed. It was shown that from a lagrangian, field-theoretic description, one can obtain stable, compact astrophysical objects that at large distances behave as black hole mimickers but, unlike black holes, possess neither curvature singularities nor event horizons. Two models are presented: 1) lagrangian of the scalar field which is nonminimally coupled to gravity (the so called boson stars), and 2) lagrangian of the multi-component scalar field that generates a topologically stable global monopole (the so called D (defect) – stars). In the first model, a dark energy like stars are obtained, while in the second model an object with large compactness is obtained and as such represents a good black hole mimicker.
Abstract (croatian)
Predložena je metoda za testiranje linearne stabilnosti anizotropnih struktura s de Sitterovom jezgrom i primijenjena na gravastarske objekte. Pokazano je da se iz mikroskopskog pristupa, tj. unutar klasične teorije polja opisane lagran žijanom i (samo)interagirajućim poljima, mogu konstruirati stabilni, visoko kompaktni astrofizički objekti koji, za razliku od crnih rupa, ne posjeduju singularitet u središtu niti horizont dogadaja na Schwarzschildovom radijusu, a čiji je potpis vanjskom promatraču (u daljini) usporediv s potpisom crnih rupa. Predstavljena su dva modela: 1) lagranžijan skalarnog polja neminimalno vezanog na gravitaciju (tzv. bozonske zvijezde), te 2) lagranžijan više-komponentnog skalarnog polja koji generira topološki stabilan globalni monopol (tzv. D (defektne) - zvijezde). U prvom modelu su dobivene zvijezde slične zvijezdama tamne energije, a u drugom modelu su dobiveni objekti koji zbog jako visoke kompaktnosti predstavljaju dobru alternativu crnoj rupi.
Keywords
Keywords (croatian)
Languageenglish
URN:NBNurn:nbn:hr:217:766282
Study programmeTitle: Physics
Study programme type: university
Study level: postgraduate
Academic / professional title: doktor/doktorica znanosti, područje prirodnih znanosti, polje fizika (doktor/doktorica znanosti, područje prirodnih znanosti, polje fizika)
Type of resourceText
Extent111 str.
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2017-08-23 09:28:08