Browsing by Author "Arık, Metin."

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  • Analytic solutions of scalar field cosmology with minimal and nonminimal coupling and deformed discrete and finite quantum systems 
    İldeş, Medine. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2022., 2022)
    In this thesis first, we study analytic solutions of cosmology. We investigate the most general cosmological model with real scalar field which is minimally coupled to gravity and Brans- Dicke cosmology. Field equations ...
  • Black holes in an expanding universe 
    Şenikoğlu, Yorgo. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2016., 2016.)
    By performing transformations on the isotropic forms of di erent metrics, new cosmological black hole solutions were obtained by generalizing the static solution, the Schwarzchild solution, the McVittie and the Kerr ...
  • Black holes, cosmology and Brans-Dicke theories in 4+1 dimensional universe 
    Çiftci, Dilek. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    We consider the embedding of 3+1 dimensional cosmology in 4+1 dimensional Jordan-Brans-Dicke theory. We show that exponentially growing and power law scale factors are implied. We solve the Brans-Dicke equations and we ...
  • Can hyperbolic phase of Brans-Dicke field account for dark matter and dark energy? 
    Çifter, Fulya. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    The main purpose of this thesis is to explain the dark matter and dark energy contribution to standard Friedmann Equation which relates the expansion rate of the universe, H; to the various fractions of the present energy ...
  • CERN LINAC4 beam dynamics studies and commissioning up to 12 MeV 
    Yıldız, Veli. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2015., 2015.)
    Linac4 is a normal conducting, 160 MeV H{u100000} ions accelerator that is being constructed within the scope of the LHC Injectors Upgrade project. Linac4 will be connected to the Proton Synchrotron Booster during the next ...
  • Cononical structure and integrability of new-dimensional field theories 
    Neyzi, Fahrünisa. (Thesis (Ph.D.)- Bogazici University. Institute for Graduate Studies in Science and Engineering, 1984., 1984.)
  • Cosmology and spontaneous symmetry breaking 
    Saygılı, Kamuran. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1998., 1998.)
    In the first problem we investigate a model which incorporates spontaneous symmetry breaking and gravitation in the context of scalar-tensor theory. Present day value of the gravitational constant is induced by the vacuum ...
  • Cylindrically symmetric spacetimes with pure rediation 
    Delice, Özgür. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    In this thesis we have investigated some solutions of Einstein's field equations having cylindrical symmetry. The corresponding energy momentum tensor of most of these solutions has pure radiation equation of state. First, ...
  • Effects of different types of fields to cosmology and of extra dimension to FCNC hadronic processes of the SM 
    Katırcı, Ayşe Nihan. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2013., 2013.)
    The Effects of Different Types of Fields to Cosmology. Alternative cosmological models are proposed as a harbinger of new physics to overcome the perceived short- comings of the standard theory of cosmology (ACDM). We ...
  • From five dimensional flat spacetime to our four dimensional braneworld via Kaluza-Klein 
    Şengör, Gizem. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2013., 2013.)
    In five dimensional cosmological models, the convention is to include the fth dimension in a way similar to the other space dimensions. In this work we attempt to introduce the fifth dimension in a way that a time dimension ...
  • Fusion of W states using optical quantum gates 
    Diker, Fırat. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    In this work, after talking about historical developments leading to ideas of information processing based on quantum dynamics, we will be constructing basic mathematical expressions for qubits and quantum gates, the To ...
  • Gauge theories based on quantum groups, representations of the braid group 
    Yıldız, Ali. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1993., 1993.)
    Possible formulations of gauge field models where the gauge group is a quantum group are discussed. The exponential map from the generators of the Lie algebra analog of the quantum group SUq(2) to the quantum group SUq(2) ...
  • General unitary quantum groups and generalized Fermion algebras 
    Altıntaş, Azmi Ali. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    Since the middle of the twentieth century, physicists have concentrated on finding quantum counterparts of classical systems. When a classical system is quantized its invariance group may still be a classical group. In the ...
  • Geodesics of the schwarzschild black hole 
    Tuna Pesen, Medine. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2016., 2016.)
    Black holes are best known with their strong gravitational eld from which even light can not escape. They are sometimes called spacetime singularities [1, 2]. There are observational evidence of existence of black holes ...
  • Grand unified models and neutrino oscillations 
    Neyzi, Fahrünisa. (Thesis (M.S.)- Bogazici University. Institute for Graduate Studies in Science and Engineering, 1982., 1982.)
  • Gravitational wave solutions to linearized Jordan Brans Dicke theory on a cosmological background 
    Dünya, Önder. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2017., 2017.)
    In this thesis, approximate vacuum solutions of Jordan-Brans-Dicke theory for perturbed scalar eld and perturbed Robertson-Walker metric, were found. First we obtained solutions for the scale factor a(t) and the scalar ...
  • Improvement of calorimeter-based muon identification and its application to H → ZZ(*) → 4ℓ analysis in the ATLAS experiment 
    Schmidt, Nesliha Becerici. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    Outermost part of the ATLAS detector, the muon spectrometer, is dedicated for detection of muons and measurement of their properties. However, combining the measurements from other parts of the detector with muon spectrometer ...
  • Inhomogeneous quantum invariance group of commuting fermions 
    Altıntaş, Azmi Ali. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2004., 2004.)
    Since the middle of the twentieth century, physicists have concentrated on finding quantum counterparts of classical systems. When a classical system is quantized its invariance group may still be a classical group. In the ...
  • Klein tunneling in α- (BEDT-TTF) 2I3 organic compound 
    Nizam, Ümmü Seleme. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    The term Klein tunnelling refers to the counterintuitive phenomenon in which an incoming particle can perfectly transmit through a potential barrier even when the barrier height exceeds the particle’s rest energy. This ...
  • Maximally symmetric cosmologies 
    Şahin, Şelale. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2018., 2018.)
    In this thesis we will give a review of maximally symmetric spacetimes. There are only three of these spacetimes namely, Minkowski, de Sitter and anti-de Sitter spacetimes represented with zero, positive and negative ...

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