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Showing 1 to 12 of 12 for “"BRST"”.
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Bödeker's Effective Theory: From Langevin Dynamics to Dyson-Schwinger Equations
… in stochastic quantisation. This leads to a BRST symmetric formulation and to corresponding Ward-Takahashi identities. A second BRST symmetry reflecting the origin in a stochastic differential equation has to be sacrificed to establish the gauge BRST symmetry. The (stochastic) Ward identities …
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Infección de la herida quirúrgica: incidencia y evaluación en siete hospitales del Principado de Asturias, (2007-2015)
… procedimientos quirúrgicos: cirugia de mama (BRST), vesicula biliar (CHOL), colon (COLO), artroplastias de cadera (HPRO), artroplastias de rodilla (KPRO), y cirugía prostática (PRST), realizados en siete hospitales de Asturias y su evolución en el periodo 2007-2015. Material y métodos Estudio …
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Classical and quantum gravity with Ashtekar variables
… explored. A detailed Becchi-Rouet-Stora-Tyutin (BRST) analysis of the theory is given. The results demonstrate explicitly that in quantum gravity, fluctuations in topology can occur and there are strong evidences of phases in the theory. There is a phase which is described by a topological …
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A study of the Gribov-Zwanziger framework: from propagators to glueballs
… the Gribov-Zwanziger framework, by exploring the BRST symmetry and the KO criterium. Next, in chapter 5 we shall elaborate on the ghost and the gluon propagator in the infrared and present a refined Gribov-Zwanziger action. Further, we present two chapters on the search for physical operators …
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Cosmological Perturbations in the Early Universe
… quantization and Becchi, Rouet, Stora, Tyutin (BRST) quantization. On another, we focus on how to generalize the allowed interactions and understand the scales they bring in the era of preheating that follows inflation, with effective field theory (EFT) methods on cosmological backgrounds.</p>
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D-branes, gauge theory and string field theory
… We show that if the identity field is BRST exact state around the tachyon vacuum, the open string spectrum will decouple from the physics and leave only the closed string spectrum.
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Tachyon condensation in string field theory
… = QA, where A is some string field and Q is the BRST operator in the true vacuum. We show evidence that the identity can indeed be written in this form. We also analyze the dynamics of tachyon condensation by studying time-dependent solutions of p-adic string theory and level truncated string …
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Metodi perturbativi per la Cromodinamica Quantistica non-perturbativa
… dove $A^{h}$ è una versione non-locale gauge e BRST invariante del campo gluonico, ed esplora le conseguenze della sua introduzione nella funzione di partizione della teoria. Poichè il focus di questa tesi è sul settore di gauge della QCD, la maggior parte dei nostri calcoli saranno condotti …
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Études in Ambitwistor Strings - Exploring new models, higher loops and curved backgrounds
… continued to off-shell momentum while retaining BRST invariance, and intuitively represents the target space Feynman propagator. We conclude with an exposition of some unsolved problems, open questions, new ideas and aspirations.
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Topics in Weyl geometry and quantum anomalies
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-02-04 without embargo terms