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Dissertations / Theses on the topic 'The Higgs field'

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Published: 5 June 2025
Last updated: 2 August 2025

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1

Gu, Jiayin, Honglei Li, Zhen Liu, Shufang Su, and Wei Su. "Learning from Higgs physics at future Higgs factories." SPRINGER, 2017. http://hdl.handle.net/10150/626569.

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Future Higgs factories can reach impressive precision on Higgs property measurements. In this paper, instead of conventional focus of Higgs precision in certain interaction bases, we explore its sensitivity to new physics models at the electron-positron colliders. In particular, we study two categories of new physics models, Standard Model (SM) with a real scalar singlet extension, and Two Higgs Double Model (2HDM) as examples of weakly-interacting models, Minimal Composite Higgs Model (MCHM) and three typical patterns of the more general operator counting for strong interacting models as exam
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2

Greenwood, Ross Norman. "Refining the multi-field effects of Higgs inflation." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/78542.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Physics, 2012.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 37).<br>In this thesis, I investigated the extent to which the inclusion of multiple scalar fields in models of Higgs inflation produces observable departures from the single field case. I designed simulations to numerically solve the differential equations of motion in the Einstein frame governing the evolution of two nonminimally coupled fields in a quartic potential. Determining the behavior of the Hubble parameter, I found that su
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3

Schroeder, Christopher Robert. "Beyond the scalar Higgs, in lattice quantum field theory." Diss., [La Jolla] : University of California, San Diego, 2009. http://wwwlib.umi.com/cr/ucsd/fullcit?p3386720.

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Thesis (Ph. D.)--University of California, San Diego, 2009.<br>Title from first page of PDF file (viewed January 19, 2010). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references (p. 87-93).
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4

Spence, Stephen Timothy. "Twistor diagrams for a Higgs-like description of the massive propagator." Thesis, University of Oxford, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.320680.

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5

Krause, Claudius [Verfasser], and Gerhard [Akademischer Betreuer] Buchalla. "Higgs effective field theories : systematics and applications / Claudius Krause ; Betreuer: Gerhard Buchalla." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2016. http://d-nb.info/1115144839/34.

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6

Neves, Alyson Bruno Fonseca. "VÓRTICES NA REDUÇÃO DIMENSIONAL DO MODELO DE MAXWELL-CARROLL-FIELD-JACKIW-HIGGS." Universidade Federal do Maranhão, 2012. http://tedebc.ufma.br:8080/jspui/handle/tede/736.

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Made available in DSpace on 2016-08-18T18:19:31Z (GMT). No. of bitstreams: 1 Dissertacao Alyson.pdf: 708260 bytes, checksum: 854f88bf5062df1a06c5ed3e0b27423b (MD5) Previous issue date: 2012-11-26<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>This monograph presents the study of vortices BPS in a model obtained by dimensional reduction of the (1+3)−D Maxwell-Carroll-Field-Jackiw-Higgs s electrodynamics to (1+2)−D. The Maxwell-Carroll-Field-Jackiw-Higgs model is defined by the following Lagrangian density L1+3 = −14FμνFμν −14 ϵμνκλ (kAF )μ AνFκλ + |Dμϕ|2 − V (|ϕ|), the fi
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7

Hoff, da Silva Julio Marny [UNESP]. "Soluções tipo vórtex em teorias de gauge Chern-Simons-Maxwell-Higgs." Universidade Estadual Paulista (UNESP), 2005. http://hdl.handle.net/11449/138351.

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Made available in DSpace on 2016-05-17T16:50:50Z (GMT). No. of bitstreams: 0 Previous issue date: 2005-10-27. Added 1 bitstream(s) on 2016-05-17T16:54:27Z : No. of bitstreams: 1 000856868.pdf: 438440 bytes, checksum: 78be6d2b0bfba08533285daf02d77016 (MD5)<br>Neste trabalho fazemos uma introdução sistemática ao conceito de soluções do tipo vórtex em teorias de gauge planares. Tais soluções são analisadas através do mecanismo de Bogomol'nyi e do grupo fundamental de homotopia e são obtidas para os modelos de Higgs abeliano com e sem o termo de Chern-Simons (CS), além de uma análise completa in
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Hoff, da Silva Julio Marny. "Soluções tipo vórtex em teorias de gauge Chern-Simons-Maxwell-Higgs /." São Paulo, 2005. http://hdl.handle.net/11449/138351.

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Orientador: Maria Cristina Batoni Abdalla Ribeiro<br>Banca: José Abdalla Helaÿel-Neto<br>Banca: Maria Emília Xavier Guimarães<br>Resumo: Neste trabalho fazemos uma introdução sistemática ao conceito de soluções do tipo vórtex em teorias de gauge planares. Tais soluções são analisadas através do mecanismo de Bogomol'nyi e do grupo fundamental de homotopia e são obtidas para os modelos de Higgs abeliano com e sem o termo de Chern-Simons (CS), além de uma análise completa incluindo o modelo de Higgs com os termos de CS e de Maxwell<br>Abstract: In this work we make a systematic introduction to th
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9

Obodi, G. N. "Monte Carlo studies of gε⁴ scaler field and the Abelian-Higgs theories in 3-dimensions". Thesis, Imperial College London, 1985. http://hdl.handle.net/10044/1/37805.

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10

Scott, Darren James. "Effective field theories for top quarks at the LHC and physics beyond the Higgs boson." Thesis, Durham University, 2017. http://etheses.dur.ac.uk/12439/.

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In this thesis we have considered applications of two different types of effective field theory. The first of these, Soft Collinear Effective Theory (SCET) has been applied to the calculation of top quark pair production at hadron colliders. Building on factorisation theorems developed using SCET we present results for resummed differential cross sections of the top pair invariant mass. The highest accuracy of resummation achieved and matched to fixed order is at NNLO+NNLL'. Resummed predictions are compared to fixed order ones and we find that while the (N)NLO results can be sensitive to the
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11

Deutschmann, Nicolas. "Precision calculations in effective theories for Higgs production." Thesis, Lyon, 2017. http://www.theses.fr/2017LYSE1142/document.

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Après une introduction générale, ce manuscrit contient deux chapitres préliminaires, l'un décrivant le contexte physique et l'autre les techniques mathématiques utilisées lors de cette thèse.Nous présentons ensuite les travaux développés au cours de cette thèse. Nous commençons par l'extraction de la correction du couplage de Yukawa du quark bottom dans la théorie effective du boson de Higgs par un calcul de correspondance à deux boucles entre cette théorie effective et le modèle standard. Cette correction était la pièce manquante pour l'amélioration de la prédiction de la section efficace de
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12

Bélusca, Hermès. "Recherche de nouvelle physique au LHC à partir d'une théorie des champs effective pour le boson de Higgs." Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLS032/document.

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La découverte au LHC d'un boson scalaire possédant des propriétés fortement similaires à celles du boson de Higgs du Modèle Standard, indique certainement que l'acteur principal du mécanisme de la brisure de symétrie électrofaible a été trouvé. Cependant, plusieurs théories au-delà du Modèle Standard prédisent l'existence d'une particule similaire provenant d'un secteur plus riche. La mesure des propriétés du boson scalaire découvert nous permettra de savoir si celui-ci correspond ou non à la particule prédite par le Modèle Standard. Pour ce faire, nous utilisons une approche modèle-indépendan
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13

Riad, Stella. "Phenomenology of neutrino properties, unification, and Higgs couplings beyond the Standard Model." Doctoral thesis, KTH, Teoretisk partikelfysik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-202311.

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The vast majority of experiments in particle physics can be described by the Standard Model of particle physics (SM). However, there are indications for physics beyond it. The only experimentally demonstrated problem of the model is the difficulty to describe neutrino masses and leptonic mixing. There is a plethora of models that try to describe these phenomena and this thesis investigates several possibilities for new models, both full theories and effective frameworks.   The values of the parameters in a model are dependent on the energy scale and we say that the parameters run. The exact be
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14

Nortier, Florian. "Dimension spatiale supplémentaire compactifiée et champ de Higgs branaire." Thesis, université Paris-Saclay, 2020. http://www.theses.fr/2020UPASS070.

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Parmi les motivations pour une théorie au-delà du Modèle Standard (MS) de la physique des particules, l'existence de nouvelles échelles au-dessus du TeV pose la question de la stabilité de l'échelle électrofaible au travers des corrections radiatives à la masse du boson de Higgs. Une voie attrayante pour protéger l'échelle électrofaible est de construire des scenarii avec q Dimensions Spatiales Supplémentaires (DSS) compactifiées sur un tore où l'échelle de gravité à (4+q)D est ramenée au TeV, grâce à un grand volume compactifié, et agit comme une échelle de coupure pour le MS. Ces modèles sou
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15

Da, Silva Caroline Dos Santos. "Cosmic strings and scalar tensor gravity." Thesis, Durham University, 1999. http://etheses.dur.ac.uk/4577/.

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This thesis is concerned with the study of cosmic strings. We studied the values for the Higgs mass and string coupling for which the gravitational effect of an infinite cosmic string in the context of the Einstein theory is not only locally but also globally weak. We conclude this happens for strings formed at scales less or equal to the Planck one with Higgs mass being less or equal to the boson vectorial mass. Then we examined the metric of an isolated self-gravitating abelian-Higgs vortex in dilatonic gravity for arbitrary coupling of the vortex fields to the dilaton. We looked for solutio
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16

Schenk, Sebastian [Verfasser], and Joerg [Akademischer Betreuer] Jaeckel. "How Many Higgs Bosons Does it Take: Consistency of Scalar Field Theories at High Energies / Sebastian Schenk ; Betreuer: Joerg Jaeckel." Heidelberg : Universitätsbibliothek Heidelberg, 2019. http://d-nb.info/1199348848/34.

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17

Hariri, Faten. "Recherche de la désintegration du boson de Higgs en deux leptons taus dans l'expérience ATLAS." Thesis, Université Paris-Saclay (ComUE), 2015. http://www.theses.fr/2015SACLS065/document.

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Au LHC, l'un des buts essentiels à savoir était de trouver la dernière pièce manquante du modèle standard (MS), i.e. le boson de Higgs (H). La recherche fut couronnée de succès avec les données prises en 2012 et la découverte d'une nouvelle particule scalaire de masse ~126 GeV, se désintégrant en deux bosons (deux photons ou deux bosons électrofaibles ZZ or W+W-). Pour vérifier la compatibilité de la nouvelle particule avec les prédictions du MS, son couplage aux fermions devait être établi, ce qui motiva la recherche du Higgs dans le mode de désintégration en deux leptons taus ayant un rappor
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18

Katanaeva, Alisa. "Holography applications in the strongly coupled sector: from QCD to the new physics." Doctoral thesis, Universitat de Barcelona, 2021. http://hdl.handle.net/10803/671798.

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AdS/CFT correspondence combines ideas of holography and duality in a way that allows one to make calculations in the otherwise hardly accessible (strongly coupled) regime of the target theory. In this thesis we are interested in describing strongly coupled sectors in the Standard Model and beyond within the holographic framework. In particular, we use the bottom-up holographic approach in application to the phenomenology of QCD and Composite Higgs. In the latter a new strong interaction binds hyper-fermions into composite states at TeV energies, and the Higgs is one of the pseudo-Goldstone bos
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19

Vásquez, Tocora Andrés Felipe. "Enhancement in the double Higgs boson production by e+ e− annihilation and physics beyond the standard model." São Paulo, 2018. http://hdl.handle.net/11449/157221.

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Orientador: Rogério Rosenfeld<br>Coorientador: Alberto Tonero<br>Banca: Ricardo D'Elia Matheus<br>Banca: Enrico Bertuzzo<br>Abstract: The main goal of this dissertation is to show the enhancement of the cross-section for the double Higgs production through pair annihilation by including effective interactions and through the non-perturbative Sommerfeld effect. Bounds to some Wilson coefficients were obtained from such enhancement, this in the scenarios of the future e+ e− -colliders (FCC-ee, ILC, CLIC). In order to achieve this, some computational tools were implemented: FeynRules, FeynArts, F
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Borchardt, Julia [Verfasser], Holger [Gutachter] Gies, Michael [Gutachter] Scherer, and Alfio [Gutachter] Bonanno. "From condensed matter to higgs physics : solving functional renormalization group equations globally in field space / Julia Borchardt ; Gutachter: Holger Gies, Michael Scherer, Alfio Bonanno." Jena : Friedrich-Schiller-Universität Jena, 2017. http://d-nb.info/117760048X/34.

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21

Dorkenoo, Leggat Alasdair. "Dirac solitons in general relativity and conformal gravity." Thesis, University of St Andrews, 2017. http://hdl.handle.net/10023/12127.

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Static, spherically-symmetric particle-like solutions to the coupled Einstein-Dirac and Einstein-Dirac-Maxwell equations have been studied by Finster, Smoller and Yau (FSY). In their work, FSY left the fermion mass as a parameter set to ±1. This thesis generalises these equations to include the Higgs field, letting the fermion mass become a function through coupling, μ. We discuss the dynamics associated with the Higgs field and find that there exist qualitatively similar solutions to those found by FSY, with well behaved, non-divergent metric components and electrostatic potential, close to t
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22

Mutet, Bruno. "Le schéma de régularisation de Taylor-Lagrange, présentation et applications." Thesis, Montpellier 2, 2011. http://www.theses.fr/2011MON20027/document.

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Le schéma de régularisation de Taylor-Lagrange (TLRS) est basé sur la définition des champs en tant que distributions à valeurs d'opérateurs (OPVD). L'expression de ces OPVD implique des fonctions test qui, grâce à leurs propriétés (propriétés d'échelles, super-régularité), permettent d'étendre des distributions singulières à tout l'espace. Ce type de régularisation, que l'on peut qualifier de coupure ultra-douce, est efficace quelque soit le degré de divergence originel et produit des amplitudes finies dépendant d'une échelle intrinsèque sans dimensions. Enfin, ce schéma préserve les symétrie
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Lima, Leonardo de. "Novos modelos na escala TeV para a hierarquia de Gauge e das massas dos férmions." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/43/43134/tde-29092014-232004/.

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O Modelo Padrão (MP) da física de partículas fornece uma descrição extremamente bem sucedida de todos os dados experimentais atuais. No entanto, temos razões para esperar que ele não seja válido até escalas de energia arbitrariamente altas. No MP a massa do bóson de Higgs é quadraticamente sensível a correções radiativas, sofrendo de grandes problemas de ajuste fino. Isso gera o chamado problema da hierarquia de gauge, cuja solução natural requer nova física na escala TeV. O MP também não fornece nenhuma explicação para a grande hierarquia de massas e ângulos de mistura dos férmions. Os proble
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Freitas, Felipe Ferreira de. "Sondando a violação de CP no setor escalar e de calibre por meio dos operadores efetivos." Universidade Federal da Paraíba, 2017. http://tede.biblioteca.ufpb.br:8080/handle/tede/9049.

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Submitted by Maike Costa (maiksebas@gmail.com) on 2017-07-05T14:50:01Z No. of bitstreams: 1 arquivototal.pdf: 3897113 bytes, checksum: 13b1bc4f67b2b3d6ab8fad34190f7c20 (MD5)<br>Made available in DSpace on 2017-07-05T14:50:01Z (GMT). No. of bitstreams: 1 arquivototal.pdf: 3897113 bytes, checksum: 13b1bc4f67b2b3d6ab8fad34190f7c20 (MD5) Previous issue date: 2017-03-30<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES<br>In this thesis we study the phenomenological consequences of several CP-violating structures that could arise in the Standard Model effective field the
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Kotecha, Vinay. "Solitons on lattices and curved space-time." Thesis, Durham University, 2001. http://etheses.dur.ac.uk/3845/.

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This thesis is concerned with solitons (solutions of certain nonlinear partial differential equations) in certain cases when the underlying space is either a lattice or curved. Chapter 2 of the thesis is concerned with the outcome of collisions between a kink (a 1-dimensional soliton) and an antikink for certain topological discrete (TD) systems. The systems considered are the TD sine-Gordon and the TD ø(^4) For the TD sine-Gordon system it is found that the kink can support an internal shape mode which plays an important role during the collisions. In particular, this mode can be excited duri
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Lambrou, Eliana. "Phase structure of five-dimensional anisotropic lattice gauge theories." Thesis, University of Edinburgh, 2016. http://hdl.handle.net/1842/19579.

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The idea that we live in a higher-dimensional space was first introduced almost 100 years ago. In the past two decades many extra-dimensional models have been proposed in order to solve fundamental problems of nature such as the hierarchy problem. Most of them need exploration via non-perturbative approaches and Lattice Gauge Theory provides a tool for doing this. In this thesis, we make attempts to find a non-perturbative way to localize gauge fields that arise from five-dimensional SU(2) gauge theories on 3-branes. In 1984, it was proposed that the phase diagram of anisotropic extra-dimensio
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Laudrain, Antoine. "Layer Intercalibration of the ATLAS Electromagnetic Calorimeter and CP-odd Higgs Boson Couplings Measurements in the Four-Lepton Decay Channel with Run 2 Data of the LHC." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLS341.

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Après la découverte du boson de Higgs en 2012 au LHC, l'intérêt s'est porté sur l'étude de ses propriétés pour vérifier le Modèle Standard et pour sonder la nouvelle physique. L'une de ses propriétés fondamentales est sa spin-parité (CP), dont le Modèle Standard prédit la valeur 0+. Les analyses menées sur les données récoltées au Run 1 du LHC ont rejeté toutes les hypothèses d'état pur de spin-parité autre que cette valeur. Cependant des états mixtes de CP sont toujours possibles, ce qui indiquerait une violation de symmétrie CP dans le secteur du Higgs.La première partie de cette thèse se co
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Bahl, Henning [Verfasser], Wolfgang F. L. [Akademischer Betreuer] Hollik, Andreas [Gutachter] Weiler, and Wolfgang F. L. [Gutachter] Hollik. "Precise prediction of MSSM Higgs boson masses combining fixed-order and effective field theory calculations / Henning Bahl ; Gutachter: Andreas Weiler, Wolfgang F. L. Hollik ; Betreuer: Wolfgang F. L. Hollik." München : Universitätsbibliothek der TU München, 2018. http://d-nb.info/116982563X/34.

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Villalobos, Carlos Hugo Coronado [UNESP]. "Vórtices semilocais." Universidade Estadual Paulista (UNESP), 2013. http://hdl.handle.net/11449/95833.

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Made available in DSpace on 2014-06-11T19:27:55Z (GMT). No. of bitstreams: 0 Previous issue date: 2013-02-15Bitstream added on 2014-06-13T20:57:12Z : No. of bitstreams: 1 villalobos_chc_me_guara.pdf: 470671 bytes, checksum: 28868b4ab81330e7a5d7833959390d93 (MD5)<br>Nesta dissertação estudamos soluções do tipo vórtices, devido a quebra espontânea da simetria, no modelo de Higgs abeliano local e semilocal, modelo de Higgs semilocal com termo de quebra de Lorentz e Chern-Simons semilocal. Fazendo uso do método de Bogomol.nyi para saturar a energia e usando condições de contorno apropriadas, e
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Villalobos, Carlos Hugo Coronado. "Vórtices semilocais /." Guaratinguetá : [s.n.], 2013. http://hdl.handle.net/11449/95833.

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Orientador: Julio Marny Hoff da Silva<br>Banca: Marcelo B. Hott<br>Banca: Humberto B. Junior<br>Resumo: Nesta dissertação estudamos soluções do tipo vórtices, devido a quebra espontânea da simetria, no modelo de Higgs abeliano local e semilocal, modelo de Higgs semilocal com termo de quebra de Lorentz e Chern-Simons semilocal. Fazendo uso do método de Bogomol.nyi para saturar a energia e usando condições de contorno apropriadas, encontramos vórtices de energia .nita. Para garantir a estabilidade destas soluções precisamos introduzir o conceito de Topolo- gia. Associado àquele conceito vamos es
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Seyedi, Shila Seyedi. "QFT and Spontaneous Symmetry Breaking." Thesis, Uppsala universitet, Teoretisk fysik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-425891.

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The aim of this project is to understand the structure of the Standard Model of the particle physics. Therefore quantum field theories (QFT) are studied in the both cases of abelian and non-abelian gauge theories i.e. quantum electrodynamics (QED), quantum chromodynamics (QCD) and electroweak interaction are reviewed. The solution to the mass problem arising in these theories i.e. spontaneous symmetry breaking is also studied.<br>Syftet med detta projekt är att förstå strukturen för partikelfysikens standardmodell. Därför studeras kvantfältsteorier (QFT) i båda fallen av abelska och ic
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Riad, Stella. "Studies of effective theories beyond the Standard Model." Licentiate thesis, KTH, Teoretisk partikelfysik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-154048.

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The vast majority of all experimental results in particle physics can be described by the Standard Model (SM) of particle physics. However, neither the existence of neutrino masses nor the mixing in the leptonic sector, which have been observed, can be described within this model. In fact, the model only describes a fraction of the known energy in the Universe. Thus, we know there must exist a theory beyond the SM. There is a plethora of possible candidates for such a model, such as supersymmetry, extra dimensional theories, and string theory. So far, there are no evidence in favor of these mo
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Sumensari, Olcyr. "Search of new physics through flavor physics observables." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLS315/document.

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La recherche indirecte des effets de la physique au-delà du Modèle Standard à travers les processus de la saveur est complémentaire aux efforts au LHC pour observer directement la nouvelle physique. Dans cette thèse nous discutons plusieurs scénarios au-delà du Modèle Standard (a) en utilisant une approche basée sur les théories de champs effective et (b) en considérant des extensions explicites du Modèle Standard, à savoir les modèles à deux doublets de Higgs et les scénarios postulant l'existence des bosons leptoquarks scalaires à basse énergie. En particulier, nous discutons le phénomène de
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Pfaudler, Jakov. "Consequences of the dualized standard model." Thesis, University of Oxford, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.284506.

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35

Lee, Jae Yong. "The little Higgs and some phenomenology /." Thesis, Connect to this title online; UW restricted, 2005. http://hdl.handle.net/1773/9645.

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Fariello, Ricardo Francisco [UNESP]. "Caos e termalização na teoria de Yang-Mills-Higgs em uma rede espacial." Universidade Estadual Paulista (UNESP), 2009. http://hdl.handle.net/11449/132738.

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Made available in DSpace on 2016-01-13T13:27:49Z (GMT). No. of bitstreams: 0 Previous issue date: 2009-11-06. Added 1 bitstream(s) on 2016-01-13T13:31:35Z : No. of bitstreams: 1 000677106.pdf: 2599098 bytes, checksum: d9013a92ac254365852ffbd2bc1b8ced (MD5)<br>Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)<br>In this thesis, we are dedicated to study the time evolution generated by the hamiltonian of a classical Yang-Mills-Higgs theory with gauge symmetry SU(2) on a spatial lattice. In particular, we study energy transfer and equilibration processes among the gauge and Higgs se
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Guimarães, Thiago Vinícius Moreira [UNESP]. "Soluções do tipo vórtice em um modelo de Maxwell-Chern-Simons-Higgs com campos de Gauge distintos." Universidade Estadual Paulista (UNESP), 2015. http://hdl.handle.net/11449/124388.

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Made available in DSpace on 2015-07-13T12:10:09Z (GMT). No. of bitstreams: 0 Previous issue date: 2015-02-23. Added 1 bitstream(s) on 2015-07-13T12:25:43Z : No. of bitstreams: 1 000833150.pdf: 449228 bytes, checksum: 74df2641720862c7aefb73c306ca6f27 (MD5)<br>Nessa dissertação temos o intuito de buscar soluções do tipo vórtice em um modelo não encontrado na literatura, que consiste em um densidade de lagrangiana formada por um termo de Maxwell gerado por um campo de gauge Aµ e um termo de Chern-Simons gerado por outro campo de gauge Aµ, fazendo uso de um potencial autodual com vácuo não trivi
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Guimarães, Thiago Vinícius Moreira. "Soluções do tipo vórtice em um modelo de Maxwell-Chern-Simons-Higgs com campos de Gauge distintos /." Guaratinguetá, 2015. http://hdl.handle.net/11449/124388.

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Orientador: Marcelo Batista Hott<br>Banca: Álvaro de Souza Dutra<br>Banca: Rodolfo Alván Casana Sifuentes<br>Resumo: Nessa dissertação temos o intuito de buscar soluções do tipo vórtice em um modelo não encontrado na literatura, que consiste em um densidade de lagrangiana formada por um termo de Maxwell gerado por um campo de gauge Aµ e um termo de Chern-Simons gerado por outro campo de gauge Aµ, fazendo uso de um potencial autodual com vácuo não trivial de sexta ordem. Tal modelo apresenta uma interessante equação de primeira ordem nas derivadas para Ø, com solução exata, porém ela não é cons
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Frost, Keith. "From instantons to sphalerons : thermal baryon non-conservation in the weak interactions /." Thesis, Connect to this title online; UW restricted, 1999. http://hdl.handle.net/1773/9776.

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40

Franklin, Benjamin Samuel Garrick. "Characterising fracture systems within upfaulted basement highs in the Hebridean Islands : an onshore analogue for the Clair Field." Thesis, Durham University, 2013. http://etheses.dur.ac.uk/7765/.

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The Outer Hebrides are a structurally complex area, comprised predominantly of crystalline basement rocks of the Lewisian Gneiss Complex with the multiply reactivated Outer Hebrides Fault Zone following eastern portions of the islands for over 200 km along strike. In Eastern Lewis, the Permo-Triassic Stornoway Formation unconformably overlies Lewisian basement rocks of the OHFZ in a half-graben. This structural setting is analogous to the major offshore Clair oil field, where oil is found within Devonian-Carboniferous red beds of the Clair Group directly overlying Lewisian Gneiss Complex rocks
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Skwarcan-Bidakowski, Alexander. "Exotic Decays of a Vector-liketop Partner at the LHC." Thesis, Uppsala universitet, Högenergifysik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-392988.

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An evaluation of how sensitive some ATLAS searches for new physics are to a new beyond standard model (BSM) vector-like quark (VLQ) and a pseudo Nambu-Goldstone boson (pNGB) scalar. This was done by simulating a signal containing these new particles and making a recast of it onto existing verified ATLAS searches for new physics at center-of-mass (CM) energy of 13 TeV (Run 2) at the Large Hadron Collider (LHC). Signals for recasting were tailored such that their final states would be appropriate in relation to each respective ATLAS search in order to use the same selection criteria as applied i
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Ciavatta, Alessandro. "Teoria della superconduttività e soluzione numerica dell’equazione della gap BCS." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amslaurea.unibo.it/23633/.

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La superconduttività è uno stato della materia caratterizzato dall'assenza di resistività DC. Durante la transizione di fase il materiale espelle dall'interno il campo magnetico applicato, diventando un perfetto diamagnete; questo è noto come effetto Meissner-Ochsenfeld. La prima teoria presentata in questa tesi è la teoria di London, che spiega l'effetto Meissner all'interno delle due equazioni fenomenologiche di London. In seguito viene presentata la teoria di Ginzburg-Landau, che estende la teoria di Landau sulle transizioni di fase del secondo ordine e ricava una dipendenza della densità d
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Hamilton, John Dwayne. "Muon decay in an SU(2) x U(1) gauge theory with spinor and vector higgs fields and massive majorana neutrinos." Thesis, University of British Columbia, 1986. http://hdl.handle.net/2429/27104.

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This thesis investigates the implications for muon decay of a gauge theory that incorporates modifications to the standard electro-weak theory, the Weinberg-Salam model. The Higgs sector of the original model is broadened to include an iso-vector or triplet Higgs field. Such an addition naturally provides for massive Majorana-type neutrinos and permits the decay modesμ → e and μ → 3e which would not otherwise be allowed. The particles most responsible for these decay modes are new, charged, physical, scalar Higgs particles not present in the Weinberg-Salam model. The decay rates found, althoug
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Vantalon, Thibaud. "Probing beyond the Standard Model physics using effective field theory." Doctoral thesis, Universitat Autònoma de Barcelona, 2018. http://hdl.handle.net/10803/565736.

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Ara que el LHC ha proporcionat 120 fb-1 de dades, l'evidència d'una diferència d'energia entre el model estàndard (SM) i la nova física ha augmentat. Això fa que la teoria de camps efectiva (EFT) sigui un mètode versàtil per restringir la nova física amb una dependència mínima del model. En aquesta tesi, basada en el meu treball realitzat durant la meva candidatura a doctorat [1-4], fem ús de la tècnica EFT en diversos estudis. Comencem per estudiar l'extracció de acoblament trilineal del Higgs en els col·lisionadors actuals i futurs de leptons, utilitzant correccions de següent ordre en la pr
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Smiseth, Jo. "Criticality and novel quantum liquid phases in Ginzburg--Landau theories with compact and non-compact gauge fields." Doctoral thesis, Norwegian University of Science and Technology, Faculty of Natural Sciences and Technology, 2005. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-583.

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<p>We have studied the critical properties of three-dimensional U(1)-symmetric lattice gauge theories. The models apply to various physical systems such as insulating phases of strongly correlated electron systems as well as superconducting and superfluid states of liquid metallic hydrogen under extreme pressures. This thesis contains an introductory part and a collection of research papers of which seven are published works and one is submitted for publication.</p><p>Paper I: Critical properties of the 2+1-dimensional compact abelian Higgs model with gauge charge q=2 are studied. We introduce
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Gennai, Simone. "Search of a graviscalar particle of the Randall-Sundrum model with the CMS experiment at LHC." Doctoral thesis, Scuola Normale Superiore, 2004. http://hdl.handle.net/11384/85871.

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From the introduction: In the past ten years the four LEP experiments provided the best way to prove theoretical predictions in the framework of the Standard Model. All the collected data have been well described by theory and no room has been left for signal leading to new physics. However physicists never give up and they started to think about new models involving new concepts that can reproduce the experimental data and enlarge our understanding of the ultimate nature of fundamental interactions. Among these theoretical models, one of the most amazing new concept is, in my opinion, the int
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Cosme, Catarina Martins. "Dynamics and Phenomenology of Scalar Field Dark Matter through the Higgs Portal." Doctoral thesis, 2018. https://repositorio-aberto.up.pt/handle/10216/118301.

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Cosme, Catarina Martins. "Dynamics and Phenomenology of Scalar Field Dark Matter through the Higgs Portal." Tese, 2018. https://repositorio-aberto.up.pt/handle/10216/118301.

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Pereira, Ana Isabel Costa. "Implicit Regularization in a QCD decay of the Higgs boson." Master's thesis, 2021. http://hdl.handle.net/10316/98040.

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Dissertação de Mestrado em Física apresentada à Faculdade de Ciências e Tecnologia<br>O regime perturbativo de Cromodinâmica Quântica envolve o aparecimento de divergências nas amplitudes de um processo. No entanto, as observáveis físicas devem ser finitas e, portanto, todas as divergências que surgem devem ser canceladas. De acordo com o teorema KLN, as divergências infravermelhas que aparecem numa taxa de decaimento ou secção eficaz em QCD devem cancelar-se ao juntar as contribuições das partes virtual e real que contribuem para a mesma ordem em teoria de perturbações. Neste trabalho, o ob
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Krajewski, Tomasz. "Ewolucja niejednorodnych rozkładów pola Higgsa." Doctoral thesis, 2018.

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