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Dissertations / Theses on the topic 'Particle physics ; Black holes'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Sampaio, Marco Oliveira Pena. "Production and evaporation of higher dimensional black holes." Thesis, University of Cambridge, 2010. https://www.repository.cam.ac.uk/handle/1810/226741.

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This thesis is a study of the theory and phenomenology of trans-Planckian black holes, in TeV gravity extra-dimensional theories. The introduction starts with the motivation for this beyond the Standard Model scenario (chapter 1), a summary of the theoretical tools to formulate the theory, and a summary of the best bounds from experiment (chapter 2). In chapter 3, after setting up some notation and describing well known solutions in 4 + n-dimensional general relativity, we construct an approximate effective background for a brane charged rotating higher-dimensional black hole. This is achieved

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2

Mostoslavsky, Michael. "Hawking radiation photosphere around microscopic black holes." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0004/MQ44227.pdf.

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3

Lashkari, Nima. "Three-dimensional gravity, holography and black holes." Thesis, McGill University, 2012. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=107760.

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Gauge/gravity dualities and the matrix model provide us with exploratory frame-works for the study of quantum gravity (QG) in the presence of a cosmological con-stant that is negative or zero, respectively. Currently, in all the known examples instring theory, the gravity theory contains complicated matter fields and interactions.However, the idea of describing theories of quantum gravity in terms of dual non-gravitational theories, i.e. holography, has proven to go well beyond these examples.Motivated by holography, in the course of this thesis we explore simple models ofquantum gravity with

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4

Michaud, Guy. "D-brane bound states and two-dimensional black holes." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/NQ44515.pdf.

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5

Dai, De-Chang. "Modified Gravity in Cosmology and Fundamental Particle Physics." Case Western Reserve University School of Graduate Studies / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=case1207065832.

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6

Maxwell, David A. "Initial data for black holes and rough spacetimes /." Thesis, Connect to this title online; UW restricted, 2004. http://hdl.handle.net/1773/5776.

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7

Gong, Wei 1981. "Theoretical investigations of terascale physics." Thesis, University of Oregon, 2009. http://hdl.handle.net/1794/10339.

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xv, 177 p. : ill. A print copy of this thesis is available through the UO Libraries. Search the library catalog for the location and call number.<br>In this dissertation, three different topics related to terascale physics are explored. First, a new method is suggested to match next-to-leading order (NLO) scattering matrix elements with parton showers. This method is based on the original approach which adds primary parton splittings in Born-level Feynman graphs in order to remove several types of infrared divergent subtractions from the NLO calculation. The original splitting functions are m

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8

Breckenridge, Jason C. "Black holes and Dirichlet branes in the theory of strings." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ36960.pdf.

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9

Held, Aaron [Verfasser], and Astrid [Akademischer Betreuer] Eichhorn. "From particle physics to black holes: The predictive power of asymptotic safety / Aaron Held ; Betreuer: Astrid Eichhorn." Heidelberg : Universitätsbibliothek Heidelberg, 2019. http://d-nb.info/1202608264/34.

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10

Reinsch, Andreas, and Andreas Reinsch. "Search for Colorful Quantum Black Holes Decaying to an Electron-Jet Final State with the ATLAS Experiment." Thesis, University of Oregon, 2012. http://hdl.handle.net/1794/12370.

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A search for quantum black holes with color charge decaying to one electron and one quark has been performed using data collected by the ATLAS Experiment at the Large Hadron Collider corresponding to 2.29 fb−1. No excess over the expected Standard Model interactions has been observed. Limits are set on the production cross section for events with one electron and one jet resulting from new physical phenomena. Models with a combined invariant mass of the electron and jet larger than or equal to 2.5TeV and a cross section above 2.6 fb are excluded at the 95% confidence level. This allows

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11

Roderick, Christopher. "The thermodynamic first law for black holes in low-energy string theory." Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=23293.

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The prescription of R. M. Wald for determining a thermodynamic first law for stationary, axisymmetric, asymptotically flat black holes in general theories of gravity is applied to the effective Lagrangian for the bosonic sector of low-energy heterotic super-string theory. It is found that the presence of the gauge fields necessitates an alteration of the prescription. Specifically, the Lie derivatives with respect to the Killing vector of the gauge fields are non-vanishing. This introduces new terms which ensure gauge-invariance of the final result in a natural way.

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12

Beghin, Diego. "Search for new high mass resonances or quantum black holes decaying to lepton flavor violating final states with the CMS detector." Doctoral thesis, Universite Libre de Bruxelles, 2020. https://dipot.ulb.ac.be/dspace/bitstream/2013/316057/3/Thesis.pdf.

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Cette thèse présente une analyse de données collectées par le détecteur CMS, dont le but est la recherche de nouvelle physique dans des états finaux qui violent la conservation de la saveur leptonique. Elle commence avec une discussion du Modèle Standard de la physique des particules, en insistant sur la conservation de la saveur leptonique dans ce modèle, et sur la violation de cette conservation qui découle d’un grand nombre de modifications du Modèle Standard. Les problèmes non résolus en physique des particules sont présentés, ainsi que certains des modèles de nouvelle physique qui y répon

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13

Gamsizkan, Halil. "Discovery Potential Of Quantum Black Holes In Add Model With The Cms Detector." Phd thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613539/index.pdf.

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With the long awaited start-up of the LHC, TeV scale physics is now in reach of the particles physicists to explore. There are many questions about the nature to be answered, and many more theories to be tested trying to answer them. The ADD model of extra dimensions is one such model, written to address the large mass hi- erarchy between the two fundamental energy scales in nature, the electroweak and the Planck scales. ADD model predicts stronger gravity at sub-millimeter distance scales, which would then lead to an interesting physical object to be produced at proton collusions at the LHC

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14

Buckingham, Ryan Mark. "Searches for new physics using Dijet Angular Distributions in proton-proton collisions at √s = 7 TeV collected with the ATLAS detector." Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:25b20fa4-8e79-43b9-83de-225f17e333ea.

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Angular distributions of jet pairs (dijets) produced in proton-proton collisions at a centre-of- mass energy √s = 7 TeV have been studied with the ATLAS detector at the Large Hadron Collider using the full 2011 data set with an integrated luminosity of 4.8 fb−1, and reaching dijet masses up to 4.5 TeV. All angular distributions are consistent with QCD predictions. Analysis of the dijet angular distribution, using a novel technique simultaneously employing the dijet mass, is employed. This analysis is sensitive to both resonant new physics and phenomena with a slow-onset in mass. Using this tec

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15

Bock, Nicolas. "Femtoscopy of proton-proton collisions in the ALICE experiment." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1316184643.

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Brunt, Benjamin Hylton. "Searches for new physics with the ATLAS experiment." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/276906.

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The Standard Model has granted exquisite power to predict the behaviour of high-energy particle collisions. It is not, however, without conceptual and empirical weaknesses. Several theories have been proposed which aim to resolve these difficulties. This thesis describes searches for two such theories: models of extra spatial dimensions, and supersymmetry. The Large Hadron Collider has extended the frontiers of energy and intensity in particle physics. In 2015, the LHC resumed proton–proton collisions at a centre-of-mass energy of 13 TeV. This increase over previous operation grants an enhance

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Rosa, Joao P. T. G. "Aspects of beyond the Standard Model string phenomenology." Thesis, University of Oxford, 2010. http://ora.ox.ac.uk/objects/uuid:5e21fba9-9211-4adb-9c73-d27e98910f30.

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String theory is currently the best-known candidate for a theory of quantum gravity, having the necessary ingredients to describe all known elementary particles and interactions. It also includes several novel features, arising, for instance, from the additional six compact dimensions required for its internal consistency, making it the natural arena to construct extensions of the Standard Model. In this thesis, we analyze some of the new phenomenological aspects introduced by string theory within the framework of low energy effective theories, focusing on their applications to cosmology, astr

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18

Ball, David, Feryal Özel, Dimitrios Psaltis, and Chi-kwan Chan. "PARTICLE ACCELERATION AND THE ORIGIN OF X-RAY FLARES IN GRMHD SIMULATIONS OF SGR A*." IOP PUBLISHING LTD, 2016. http://hdl.handle.net/10150/621230.

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Significant X-ray variability and flaring has been observed from Sgr A* but is poorly understood from a theoretical standpoint. We perform general relativistic magnetohydrodynamic simulations that take into account a population of non-thermal electrons with energy distributions and injection rates that are motivated by PIC simulations of magnetic reconnection. We explore the effects of including these non-thermal electrons on the predicted broadband variability of Sgr A* and find that X-ray variability is a generic result of localizing non-thermal electrons to highly magnetized regions, where

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19

Lim, Hyun. "Dynamical Compact Objects in Numerical Relativity." BYU ScholarsArchive, 2019. https://scholarsarchive.byu.edu/etd/7729.

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The work of this dissertation will study various aspects of the dynamics of compact objects using numerical simulations.We consider BH dynamics within two modified or alternative theories of gravity. Within a family of Einstein-Maxwell-Dilaton-Axion theories, we find that the GW waveforms from binary black hole (BBH) mergers differ from the standard GW waveform prediction of GR for especially large axion values. For more astrophysically realistic (i.e. smaller) values, the differences become negligible and undetectable. Weestablish the existence of a well-posed initial value problem for a seco

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20

Wray, Andrew M. "Topological defects and black holes." Thesis, University of Newcastle Upon Tyne, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.332341.

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21

Schnittman, Jeremy David. "Radiation transport around Kerr black holes." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/30362.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 2005.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Includes bibliographical references (p. 201-212).<br>This Thesis describes the basic framework of a relativistic ray-tracing code for analyzing accretion processes around Kerr black holes. We begin in Chapter 1 with a brief historical summary of the major advances in black hole astrophysics over the past few decades. In Chapter 2 we present a detailed description o

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22

Michaud, Guy 1971. "Two-dimensional dilation black holes." Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=22776.

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In this thesis, we study toy models of two-dimensional gravity. We first review two known models: the classical and quantum corrected CGHS models and the quantum corrected model of RST. These two models have black holes solutions with curvature singularities, similar to the Schwartzschild black hole. This singularity becomes naked in the RST model at a certain event during the evaporation. In the third chapter, we build a more general version with new quantum corrections beyond those presented in the RST model, which enable us to find a model without curvature singularities. We will also see t

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23

Turton, David J. "On black holes in string theory." Thesis, Queen Mary, University of London, 2011. http://qmro.qmul.ac.uk/xmlui/handle/123456789/2348.

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This thesis investigates black holes in string theory through string amplitudes and through gauge-gravity duality. The research presented in this thesis supports the claim that string theory is capable of a consistent quantum-mechanical description of black holes and develops techniques which may prove useful in testing this claim in new scenarios. The thesis comprises two parts. Part I describes novel disk amplitudes which derive the supergravity elds sourced by a D-brane with a travelling wave, and Part II describes free particle structures arising in a matrix model which is related through

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24

Gentle, Simon Adam. "Holography, black holes and condensed matter physics." Thesis, Durham University, 2013. http://etheses.dur.ac.uk/7286/.

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In this thesis we employ holographic techniques to explore strongly-coupled quantum field theories at non-zero temperature and density. First we consider a state dual to a charged black hole with planar horizon and compute retarded Green's functions for conserved currents in the shear channel. We demonstrate the intricate motion of their poles and stress the importance of the residues at the poles beyond the hydrodynamic regime. We then explore the collective excitations of holographic quantum liquids arising on D3/D5 and D3/D7 brane intersections as a function of temperature and magnetic fiel

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25

Chowdhury, Borun D. "The Dynamics Of Non-Extremal Black Holes." The Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=osu1219417899.

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26

Liu, Siming. "Accretion processes around supermassive black holes." Diss., The University of Arizona, 2002. http://hdl.handle.net/10150/289825.

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Active Galactic Nuclei (AGNs) are believed to be powered by accretion onto supermassive black holes (BHs). With the development in high resolution observations over a broad frequency range, it is now tenable to study the corresponding physical processes in detail. We find that the emission from the closest supermassive BH candidate, Sagittarius A*, a compact radio source presumably accreting from stellar winds prevailing at the Galactic Center, can be explained as due to a quasi-spherical accretion flow, which circularizes to form a small magnetized accretion disk near the BH's event horizon.

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27

Gausmann, Nina. "Quantum black holes at the LHC : production and decay mechanisms of non-thermal microscopic black holes in particle collisions." Thesis, University of Sussex, 2014. http://sro.sussex.ac.uk/id/eprint/48854/.

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The scale of quantum gravity could be as low as a few TeV in the existence of extra spatial dimensions or if the Planck scale runs fast due to a large number of particles in a hidden sector. One of the most striking features of low-scale quantum gravity models would be the creation of quantum black holes, i.e. non-thermal black holes with masses around a few TeV, in high energy collisions. This thesis deals with the production and decay mechanisms of quantum black holes at current colliders, such as the Large Hadron Collider (LHC). Firstly, a review of models with low-scale gravity is given. W

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Del, Pozzo Walter. "Black Holes, Galaxy Clusters and Gravitational Waves." Thesis, University of Birmingham, 2010. http://etheses.bham.ac.uk//id/eprint/1321/.

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This thesis deals with three aspects of modern astrophysical research. We propose a Bayesian data analysis framework to test alternative theories of gravity using observations of Gravitational Waves (GWs) from the inspiral phase of binary systems. We compare General Relativity predictions to the ones from a Massive Graviton theory. We can discriminate between the two theories and produce posterior probability distribution functions. We also devise a method to combine multiple observations that y increases the amount of information that is possible to extract from GWs. Using current wide-field

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Valcárcel, Luis 1979. "Gravitational Lorentz violations in 5D black hole background : a numerical investigation." Thesis, McGill University, 2003. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=80891.

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The warped braneworld picture introduced by Randall and Sundrum provides new ways of solving long-standing problems in physics, like the gauge hierarchy problem. If the warp factor is different for the time and space components of the metric, new effects may arise. We concentrate on this possibility and show that the speed of gravity may differ from that of electromagnetism, while Lorentz invariance is preserved for the standard model fields. A charged black hole in a 5 dimensional bulk provides the necessary background. Its properties are studied in detail to ensure correct embedding o

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Chong, Zhiwei. "Anti-de Sitter black holes in supergravity." [College Station, Tex. : Texas A&M University, 2006. http://hdl.handle.net/1969.1/ETD-TAMU-1837.

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Russell, Megan S. B. Massachusetts Institute of Technology. "Formalism for the rapid evolution of primordial black holes." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/111883.

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Thesis: S.B., Massachusetts Institute of Technology, Department of Physics, 2017.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 47-48).<br>This thesis presents two different formalisms which can be used together to evolve a density perturbation produced during inflation forwards in time in the radiation-dominated era of the early universe. The first formalism, based on early work by Misner and Sharp, is for the evolution of a perfect fluid in spherical symmetry under its own gravity. This allows us to efficiently determine if a black hole will form, but

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Russell, Megan S. B. Massachusetts Institute of Technology. "Formalism for the rapid evolution of primordial black holes." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/111883.

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Thesis: S.B., Massachusetts Institute of Technology, Department of Physics, 2017.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 47-48).<br>This thesis presents two different formalisms which can be used together to evolve a density perturbation produced during inflation forwards in time in the radiation-dominated era of the early universe. The first formalism, based on early work by Misner and Sharp, is for the evolution of a perfect fluid in spherical symmetry under its own gravity. This allows us to efficiently determine if a black hole will form, but

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33

Zhu, Yucong. "The Bright Side of Black Holes: Radiation From Black Hole Accretion Disks." Thesis, Harvard University, 2015. http://nrs.harvard.edu/urn-3:HUL.InstRepos:17463143.

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An understanding of radiation is paramount for connecting observations of accretion disks with the theory of black holes. In this thesis, we explore via radiative transfer postprocessing calculations the observational signatures of black holes. We investigate disk spectra by analyzing general relativistic magnetohydrodynamic (GRMHD) simulations of accretion disks. For the most part there are no surprises -- the resulting GRMHD spectrum is very close to the analytic Novikov & Thorne (1973) prediction from decades past, except for a small modification in the case of spinning black holes, whic

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34

O'Sullivan, Stephen Gerard. "Making better binary models and modeling distorted black holes using black hole perturbation theory." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/99297.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Physics, 2015.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references.<br>In this thesis, I discuss the application and development of black hole perturbation theory both from an observational standpoint via gravitational waves and also tidal distortions of black hole horizons. The promise of gravitational wave astronomy depends on our ability to accurately model gravitational wave signals from astrophysical sources. This requires large numbers of accurate theoretical template waveforms spanning large

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Fragkakis, Dionysios. "A field theoretical description of quantum black holes." Thesis, University of Sussex, 2014. http://sro.sussex.ac.uk/id/eprint/48821/.

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The subject of this thesis is the description of quantum black holes as a way to probe quantum gravity. Scenarios of a lower Planck scale make quantum gravity experimentally approachable, therefore a theoretical framework is needed in order to be able to probe quantum gravitational effects. We present a field theoretical formalism for the treatment of quantum black holes and their interactions with particles of the Standard Model. We examine the properties and assumptions governing quantum black holes and develop a methodology to examine their behavior using quantum field theory language. We a

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Stone, Nicholas Chamberlain. "Tidal Disruption of Stars by Supermassive Black Holes." Thesis, Harvard University, 2013. http://dissertations.umi.com/gsas.harvard:10998.

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This thesis presents theoretical results on the tidal disruption of stars by supermassive black holes (SMBHs). The multiwavelength ares produced by tidal disruption events (TDEs) have supernova-like luminosities, and associated relativistic jets can be visible to cosmological distances. TDEs probe the demography of quiescent SMBHs, and are natural laboratories for jet launching mechanisms and super-Eddington accretion. The first chapter broadly surveys TDE physics. The second and third chapters estimate the TDE rate following gravitational wave (GW) recoil of a SMBH (after a SMBH binary merger

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Jakobsson, Emma. "Shapes of Spacetimes : Collected tales of black holes." Doctoral thesis, Stockholms universitet, Fysikum, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-139950.

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In theory, the existence of black holes is predicted by general relativity. In reality, there is a general consensus that they exist in space; in particular at the center of many galaxies. The theory of black holes has been around for decades, but there are still interesting questions calling for attention. This doctoral thesis and its four contributions touches upon some of these questions. One challenging theoretical aspect of black holes lies in their definition, the event horizon. For several reasons, this definition is not satisfactory in many contexts, and alternative horizons based on t

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Cebeci, Hakan. "Kerr Black Holes And Its Generalizations." Phd thesis, METU, 2003. http://etd.lib.metu.edu.tr/upload/3/1006154/index.pdf.

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The scalar tensor theory of gravitation is constructed in D dimensions in all possible geometries of spacetime. In Riemannian geometry, theory of gravitation involves a spacetime metric g with a torsion-free, metric compatible connection structure. If the geometry is non-Riemannian, then the gauge theory of gravitation can be constructed with a spacetime metric g and a connection structure with torsion. In non-Riemannian theory, connections may be metric compatible or non-metric compatible. It is shown that theory of gravitation which involves non-metric compatible connection and torsion, can

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Deaton, Michael Brett. "Neutrinos in mergers of neutron stars with black holes." Thesis, Washington State University, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=3732682.

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<p> Mergers of a neutron star and a black hole are interesting because of the dual complexity of the black hole's strong gravity and the neutron star's nuclear-density fluid. Mergers can yield short-lived nuclear accretion disks, emitting copious neutrinos. This radiation may change the thermodynamic state of the disk itself, may drive an ultrarelativistic jet of electrons and positrons, may oscillate in its flavor content, may irradiate surrounding matter, playing a role in nucleosynthesis, and may be detected directly. </p><p> In this thesis I present a model of such a merger, its remnant

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Smith, John D. "Scalar fields in quantum field theory and black holes." Thesis, University of Newcastle Upon Tyne, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.265489.

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Ahmadi, Morteza, and University of Lethbridge Faculty of Arts and Science. "Aspects of black hole physics." Thesis, Lethbridge, Alta. : University of Lethbridge, Faculty of Arts and Science, 2006, 2006. http://hdl.handle.net/10133/386.

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In this thesis, aspects of the physics of black holes are reviewed and new results in black hole thermodynamics are presented. First, general black hole solutions of Einstein’s equations of general relativity are mentioned and a proof of conservation law of energy and momentum in general relativity is presented. Aspects of the laws of black hole mechanics and Hawking radiation are then studied. Two proposals which attempt to explain the origin of black hole entropy (the brick wall model and entanglement entropy) are then discussed. Finally, some recent work related to the possible production a

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Copparoni, Lorenzo. "Generating primordial black holes in non-canonical inflation." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amslaurea.unibo.it/23537/.

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Among the candidates for dark matter, Primordial Black Holes are extremely promising, as they do not require the introduction of new physics beyond the Standard Model of particle physics. These objects can arise from the collapse of overdense regions generated by the curvature perturbation generated during inflation. The probability distribution of these overdense regions is related to the power spectrum of the scalar perturbation which must be enhanced by compared to the perturbation at CMB scale in order for the collapse to generate enough Primordial Black Holes to account for the dar

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Avery, Steven Guy. "Using the D1D5 CFT to Understand Black Holes." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1287780525.

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Verhaaren, Christopher Bruce. "Charged, Rotating Black Holes in Higher Dimensions." BYU ScholarsArchive, 2010. https://scholarsarchive.byu.edu/etd/2354.

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We present a method for solving the Einstein-Maxwell equations in a five dimensional, asymptotically flat, black hole spacetime with three commuting Killing vector fields. In particular, we show that by reducing the dimension of the Einstein-Maxwell equations in a Kaluza-Klein like manner we can determine the components of the metric and vector potential which lie in the direction of the Killing vector fields. These components are determined by nine scalar fields each of which satisfy a partial differential equation in two variables. These equations take the form of an elliptic operator set eq

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Koushiappas, Savvas Michael. "From supermassive black holes to supersymmetric dark matter." Connect to this title online, 2004. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1085673923.

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Thesis (Ph. D.)--Ohio State University, 2004.<br>Title from first page of PDF file. Document formatted into pages; contains xxi, 172 p.; also includes graphics (some col.) Includes bibliographical references (p. 162-172). Available online via OhioLINK's ETD Center

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Morgan, Rodney Anthony. "Black holes and Berry's phase : some aspects of geometry in physics." Master's thesis, University of Cape Town, 1995. http://hdl.handle.net/11427/14357.

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Bibliography: leaves 112-116.<br>The problem of the backreaction resulting from particle creation by black holes is examined from several vantage points. We first focus attention on the occurrence of the Berry phase in certain situations. This gives some insight into the geometry of quantum mechanics. Then we turn our attention to the analysis of quantum fields in black hole spacetimes. This brings us to the renormalisation of the stress- tensor via analytic methods. Finally, we draw on recent results to show how the Berry phase comes into play.

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Anglés-Alcázar, Daniel. "Modeling the Evolution of Galaxies and Massive Black Holes Across Cosmic Time." Diss., The University of Arizona, 2014. http://hdl.handle.net/10150/332682.

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I use cosmological hydrodynamic simulations to investigate different aspects of the evolution of galaxies and massive black holes across cosmic time. First, I present high resolution "zoom-in" simulations including various prescriptions for galactic outflows designed to explore the impact of star-formation driven winds on the morphological, dynamical, and structural properties of individual galaxies from early times down to z = 2. Simulations without winds produce massive, compact galaxies with low gas fractions, super-solar metallicities, high bulge fractions, and much of the star formation c

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48

Webb, Natalie. "The physics of late-type secondary stars and accretion discs in interacting binaries." Thesis, Keele University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.268340.

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49

Koyama, Hiroko, Kenta Kiuchi, and Tetsuro Konishi. "1/f fluctuations in spinning-particle motions around a Schwarzschild black hole." American Physical Society, 2007. http://hdl.handle.net/2237/11272.

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50

Haddad, Nidal. "Black Holes: New Perspectives from Higher Dimensions." Doctoral thesis, Universitat de Barcelona, 2012. http://hdl.handle.net/10803/96430.

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However successful classical general relativity is, it faces non-normalizability problems at the quantum mechanical level. Nevertheless, it predicts the existence of black holes, which are thermal objects that are expected to still exist in a satisfactory theory of quantum gravity. This is one of the main reasons why black holes are important. String theory is considered, today, to be the most successful candidate for a quantum theory of gravity. Its mathematical consistency requires spacetime to have ten dimensions, and thus, it motivates the study of general relativity, and in particular, bl

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