Relevant bibliographies by topics / Spacetime Structure / Dissertations / Theses
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Dissertations / Theses on the topic 'Spacetime Structure'

Author: Grafiati
Published: 2 June 2025
Last updated: 31 July 2025

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Consult the top 21 dissertations / theses for your research on the topic 'Spacetime Structure.'

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1

Knox, Eleanor. "Geometry, inertia and spacetime structure." Thesis, University of Oxford, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.527342.

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2

Blau, Steven Kennith. "Spacetime structure of the very early universe." Thesis, Massachusetts Institute of Technology, 1985. http://hdl.handle.net/1721.1/15300.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1985.<br>MICROFICHE COPY AVAILABLE IN ARCHIVES AND SCIENCE.<br>Includes bibliographical references.<br>by Steven Kennith Blau.<br>Ph.D.
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3

Virtanen, Jukka Tapio. "Structure of elementary particles in non-archimedean spacetime." Diss., Restricted to subscribing institutions, 2009. http://proquest.umi.com/pqdweb?did=1835111791&sid=1&Fmt=2&clientId=1564&RQT=309&VName=PQD.

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4

Siwek, Alicja Anna. "On spacetime structure and symmetries in a strong gravitational field and in quantum field theory." Strasbourg, 2011. http://www.theses.fr/2011STRA6141.

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La thèse contient une étude de la structure et les symétries de l'espace-temps présentée de quelques perspectives différentes. Géodésiques de particules sont analysées dans les champs gravitationnels forts. Les orbites circulaires et l'existence de la sphère des photons sont considerés dans la géométrie de Schwarzschild et des espaces-temps « Schwarzschild-like », résultants de la gravité de Hořava-Lifshitz. Communication au moyen de signaux électromagnétiques radiaux est étudié dans la proximité de l'horizon des événements dans l'espace-temps de Schwarzschild, où Kruskal-Szekeres système de c
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5

Riedel, Gårding Elias. "Quantum structure of holographic black holes." Thesis, KTH, Fysik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-284694.

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We study a free quantum scalar field in the BTZ spacetime as a model of the AdS/CFT correspondence for black holes, and show the essential steps in computing Bogolyubov coefficients between modes on either side of the wormhole. As background, we review the BTZ geometry in standard, Kruskal and Poincaré coordinates, holographic renormalisation of the dual field theory and canonical quantisation in curved spacetime.<br>Vi studerar ett fritt skalärt kvantfält i BTZ-rumtiden som en modell av AdS/CFT-dualiteten för svarta hål och visar huvudstegen i beräkningen av Bogolyubov-koefficienter mellan mo
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6

Bergstedt, Viktor. "Spacetime as a Hamiltonian Orbit and Geroch's Theorem on the Existence of Fermions." Thesis, Uppsala universitet, Institutionen för fysik och astronomi, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-432488.

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Over a century since its inception, general relativity continues to lie at the heart of some of the most researched topics in theoretical physics. It seems likely that the coveted solutions to problems like quantum gravity are to be found in an extension of general relativity, one which may only be visible in an alternate formulation of the theory.  In this thesis we consider the possibility of casting general relativity in the form of an initial value problem where spacetime is seen as the evolution of space. This evolution is shown to be constrained and of Hamiltonian type.  Not all spacetim
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7

Poulain, Timothé. "On the quantum structure of spacetime and its relation to the quantum theory of fields : k-Poincaré invariant field theories and other examples." Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLS331/document.

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De nombreuses approches à la gravité quantique suggèrent que la description usuelle de l’espace-temps ne serait pas adaptée à la description des phénomènes physiques impliquant à la fois des processus gravitationnels et quantiques. Une meilleure description pourrait consister à munir l’espace-temps d’une structure non-commutative en remplaçant les coordonnées locales sur la variété par des opérateurs ne commutant pas deux-à-deux. Il s’ensuit que le comportement des théories de champs construites sur de tels espaces diffère en général de celui des théories de champs ordinaires. L’étude de ces p
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8

Burtscher, Annegret Yvonne. "Analytic and geometric aspects of spacetimes of low regularity." Thesis, Paris 6, 2014. http://www.theses.fr/2014PA066345.

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La théorie de la relativité générale décrit l'effet de la gravitation en termes de géométrie des espaces-temps. La courbure des variétés lorentzienne est liée à l'énergie et l'évolution de la matière (ou du vide) par les équations d'Einstein, un système d'équations différentielles non-linéaires. Dans les années 1950, l'existence locale de solutions des équations d'Einstein a été établie. Motivé par ce résultat, j'étudie l'évolution ainsi que la régularité des espaces-temps. Il est démontré que certaines estimations d'énergie peuvent être contrôlées par des limites unilatérales portant uniqueme
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9

Tiglio, Manuel Humberto. "Cuerdas cósmicas y causalidad." Doctoral thesis, Digitalizado de: https://famaf.biblio.unc.edu.ar/cgi-bin/koha/opac-detail.pl?biblionumber=13379, 2000. http://hdl.handle.net/11086/22843.

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Tesis (Doctor en Física)--Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física, 2000.<br>Contenidos parciales: Cuerdas estáticas -- Cuerdas interactuando con campos de Einstein Maxwell -- Cuerdas con momento y CTCs eternas -- Holonomías y energía-momento -- Máquinas de tiempo -- Protección cronológica y gravedad cuántica.<br>Contenidos parciales: Cuerdas estáticas -- Cuerdas interactuando con campos de Einstein Maxwell -- Cuerdas con momento y CTCs eternas -- Holonomías y energía-momento -- Máquinas de tiempo -- Protección cronológica y gravedad cuántica.<br>publishedVe
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10

RAVERA, LUCREZIA. "Group Theoretical Hidden Structure of Supergravity Theories in Higher Dimensions." Doctoral thesis, Politecnico di Torino, 2018. http://hdl.handle.net/11583/2700157.

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L'obiettivo della mia tesi di dottorato è quello di esplorare simmetrie nascoste nelle teorie di supergravità. In questa direzione ho affrontato diversi temi di ricerca: da un lato mi sono dedicata all'analisi della struttura di gauge nascosta in teorie di supergravità in varie dimensioni di spazio-tempo e allo studio di un particolare modello in quattro dimensioni in presenza di un bordo spaziale non banale; dall'altro lato, mi sono focalizzata sui legami algebrici tra superalgebre di rilevanza nel campo della supergravità. Nei primi tre capitoli della tesi vengono forniti un'introduzione gen
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11

Smulevici, Jacques. "The structure of singularities in cosmological spacetimes with symmetry." Thesis, University of Cambridge, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.608881.

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12

Kommemi, Jonathan David. "The global structure of spherically symmetric charged scalar field spacetimes." Thesis, University of Cambridge, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.608282.

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13

Newsome, Ian M. "GEODESIC STRUCTURE IN SCHWARZSCHILD GEOMETRY WITH EXTENSIONS IN HIGHER DIMENSIONAL SPACETIMES." VCU Scholars Compass, 2018. https://scholarscompass.vcu.edu/etd/5414.

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From Birkoff's theorem, the geometry in four spacetime dimensions outside a spherically symmetric and static, gravitating source must be given by the Schwarzschild metric. This metric therefore satisfies the Einstein vacuum equations. If the mass which gives rise to the Schwarzschild spacetime geometry is concentrated within a radius of r=2M, a black hole will form. Non-accelerating particles (freely falling) traveling through this geometry will do so along parametrized curves called geodesics, which are curved space generalizations of straight paths. These geodesics can be found by solving th
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14

Sorba, Fabrizio [Verfasser], and F. R. [Akademischer Betreuer] Klinkhamer. "Nontrivial topological structures of spacetime and implications for particle propagation / Fabrizio Sorba. Betreuer: F. R. Klinkhamer." Karlsruhe : KIT-Bibliothek, 2014. http://d-nb.info/1059157470/34.

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15

Amadei, Lautaro Leandro. "Aplicaciones en relatividad general del método de equivalencia de Cartan." Bachelor's thesis, 2017. http://hdl.handle.net/11086/5795.

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En este trabajo se estudia el Método de equivalencia de Cartan y su aplicación a Relatividad General, el algoritmo de Cartan-Karlhede. A partir de los invariantes de Cartan se obtienen cantidades que se anulan sobre horizontes. En particular, se estudian los casos no nulo tipo electromagnético y radiación pura. Finalmente, se aplica lo obtenido para espaciotiempos de Vaidya.
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16

Cabral, Francisco Tenreiro Oliveira. "Towards a new spacetime paradigm : Gauge symmetries and post-Riemann geometries in gravitation." Doctoral thesis, 2020. http://hdl.handle.net/10451/51916.

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In this thesis the geometrical methods and symmetry principles in gravitation are explored motivating a new perspective into the spacetime paradigm. The effects of post-Riemann spacetime geometries with torsion are studied in applications to fundamental fermionic and bosonic fields, cosmology, astrophysics and gravitational waves. The physical implications and related phenomenological considerations of this study are addressed, and the fundamental ideas related to spacetime physics, motivated by geometrical methods and symmetry principles, are also discussed in the context of the possible rout
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17

Haláček, Jakub. "Struktura černoděrových prostoročasů." Master's thesis, 2011. http://www.nusl.cz/ntk/nusl-303924.

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18

Cai, Qi-Lin, and 蔡奇林. "On the spacetime arrangements of sequential computational structures for parallel processing." Thesis, 1988. http://ndltd.ncl.edu.tw/handle/28272713662610066915.

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19

Araneda, Bernardo Gabriel. "Simetrías ocultas, twistors, y estabilidad de campos lineales en agujeros negros." Doctoral thesis, 2018. http://hdl.handle.net/11086/6424.

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Tesis (Doctor en Física)--Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía, Física y Computación, 2018.<br>En el marco del problema de estabilidad de agujeros negros, esta tesis trata diversos aspectos de las ecuaciones de campos libres sin masa sobre espacio-tiempos curvos, con énfasis en espacios algebraicamente especiales que contienen agujeros negros como soluciones particulares. El enfoque central es el estudio de la posible correspondencia entre campos escalares y campos de spin superior, y de la existencia y origen de simetrías ocultas y ciertos mecanismos asociados a
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20

Liu, Jia-Wei, and 劉家瑋. "The Flexible Occupancy of Outdoor Dining SpaceThe Outdoor Dining Space with Temporary Structures in the State of Semi-Nomadic." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/52t2x6.

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碩士<br>淡江大學<br>建築學系碩士班<br>101<br>Abstract Taiwanese dietetic culture does not occur only in the interior space. The night market is the best example for outdoor dining space which presents an extremely important value. With an utmost tolerance of tender occupation exemplified by outdoor dining space, a common life scenery has been formed by “scaffolding”, which possesses the important features including good performances of mobility and variability, spontaneous and flexible appearance, low cost and high efficiency, rapid construction and dismantling. The ordinary tectonic of street v
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21

Quiroga, Gonzalo Damián. "Dinámica de objetos compactos y radiación gravitacional." Doctoral thesis, 2015. http://hdl.handle.net/11086/2790.

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Tesis (Doctor en Física)--Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física, 2015.<br>En esta tesis haciendo uso de la estructura asintótica del espaciotiempo y del formalismo de Newman-Penrose definimos la noción de centro de masa y spin para sistemas gravitacionales que emiten radiación gravitacional y electromagnética. A diferencia de otras formulaciones disponibles en la literatura, una de las características centrales de nuestro formalismo es el uso de cortes reales de Newman-Unti que son generados por líneas mundo del espaciotiempo. A partir de estos cortes se
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