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Relevant bibliographies by topics / Supergravity Vacua

Academic literature on the topic 'Supergravity Vacua'

Author: Grafiati

Published: 14 March 2023

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Dissertations / Theses
Book chapters
Conference papers

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Journal articles on the topic "Supergravity Vacua"

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Taylor-Robinson, Marika M. "Semiclassical stability of supergravity vacua." Physical Review D 55, no. 8 (April 15, 1997): 4822–38. http://dx.doi.org/10.1103/physrevd.55.4822.

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Gómez-Reino, Marta, and Claudio A. Scrucca. "Metastable supergravity vacua withFandDsupersymmetry breaking." Journal of High Energy Physics 2007, no. 08 (August 31, 2007): 091. http://dx.doi.org/10.1088/1126-6708/2007/08/091.

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Cowdall, P. M., and P. K. Townsend. "Gauged supergravity vacua from intersecting branes." Physics Letters B 429, no. 3-4 (June 1998): 281–88. http://dx.doi.org/10.1016/s0370-2693(98)00445-6.

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Antoniadis, I., C. Bachas, and A. Sagnotti. "Gauged supergravity vacua in string theory." Physics Letters B 235, no. 3-4 (February 1990): 255–60. http://dx.doi.org/10.1016/0370-2693(90)91960-j.

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HU, SEN, ZHI HU, and RUORAN ZHANG. "GENERALIZED RICCI FLOW AND SUPERGRAVITY VACUUM SOLUTIONS." International Journal of Modern Physics A 25, no. 12 (May 10, 2010): 2535–49. http://dx.doi.org/10.1142/s0217751x10048238.

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We first give a proof that the supersymmetric configurations satisfy the equations of motion for type II supergravity. In flux compactifications, the string vacua preserving N = 2 supersymmetry are the twisted generalized Calabi–Yau manifold. The modulus space of the string vacua can be constructed. We discuss the generalized Dirac operator which adds a torsional term to the ordinary Dirac operator and compute its index by the path integral method. Via the variation of the action of supergravity one can introduce the generalized Ricci flow equations. We consider deforming the manifold with the generalized Ricci flow. Finally, we consider the linear stability of the fixed points of the generalized Ricci flow.

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Behrndt, Klaus, and Swapna Mahapatra. "De Sitter vacua fromN=2 gauged supergravity." Journal of High Energy Physics 2004, no. 01 (January 30, 2004): 068. http://dx.doi.org/10.1088/1126-6708/2004/01/068.

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Freedman, Daniel Z., and Boris Körs. "Kähler anomalies in supergravity and flux vacua." Journal of High Energy Physics 2006, no. 11 (November 23, 2006): 067. http://dx.doi.org/10.1088/1126-6708/2006/11/067.

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Inverso, Gianluca. "Vacua and Gaugings of MaximalD= 4 Supergravity." Journal of Physics: Conference Series 383 (October 1, 2012): 012001. http://dx.doi.org/10.1088/1742-6596/383/1/012001.

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Kehagias, A. "De Sitter vacua in simple extended supergravity." Fortschritte der Physik 57, no. 5-7 (April 15, 2009): 606–10. http://dx.doi.org/10.1002/prop.200900014.

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Malek, Emanuel, and Valentí Vall Camell. "Consistent truncations around half-maximal AdS₅ vacua of 11-dimensional supergravity." Classical and Quantum Gravity 39, no. 7 (March 17, 2022): 075026. http://dx.doi.org/10.1088/1361-6382/ac566a.

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Abstract We use exceptional field theory to systematically study all possible consistent truncations around any M-theory half-maximal vacua of the warped product form AdS5 × M 3 × S 2 × S 1, with M 3 a three-dimensional manifold. We show that, for any of these vacua, only truncations with at most three vector multiplets are consistent. Furthermore, the possible gaugings are restricted to be either SU(2) × U(1) or ISO(3) × U(1) where, in the first case, the U(1) factor can have different embeddings inside the global symmetry group SO(5, n), where n ⩽ 3 equals the number of vector multiplets. This rules out the possibility of any other gauging arising as a consistent truncation around the aforementioned M-theory vacua. Our analysis shows that of the many flows from half-maximal to quarter-maximal AdS5 vacua constructed in five-dimensional supergravity in Bobev (2018 J. High Energy Phys. 6 86), only those corresponding to an adjoint mass deformation in the dual SCFT can be uplifted to 11-dimensional supergravity. The other flows are five-dimensional artefacts without a higher-dimensional origin. Furthermore, consistent truncations with vector multiplets exist only if the vacuum satisfies certain conditions, which we derive.

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Dissertations / Theses on the topic "Supergravity Vacua"

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Clark, Robert Edward. "Vacua and interpolating solutions in supergravity." Thesis, Imperial College London, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.404413.

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Solard, Gautier. "Flux vacua in type II supergravity theories." Paris 6, 2013. http://www.theses.fr/2013PA066682.

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Nous commençons par donner une revue des techniques géométriques (en particulier les G-structures et la Géometrie Complexe généralisée) qui sont couramment utilisées dans l'éude des compactifications supersymétriques N=1. Ensuite nous nous concentrons sur l'étude des compactifications de type IIB vers des vides Anti de Sitter avec supersymétrie N=1. Nous donnons les conditions générales que la supersymétrie impose, en particulier la variété interne doit avoir une structure SU(2). Nous faisons une recherche exhaustive de tels vides sur les quotients et les groupes de Lie. Avec quelques hypothèses sur les classes de torsion SU(2) et avec dilaton et facteur de warping constants, on trouve que de tels vides sont très rares : deux sur des quotients et cinq sur des groupes de Lie. Tous requierent des plans O5 et O7 qui s'intersectent. Cela veut également dire qu'il n'existe pas de vide AdS4 sans sources. Nous étudions ensuite la séparation d'échelles sur ces vides afin de donner quelques intuitions sur les théories effectives à quatre dimensions. Nous avons trouvé que seulement deux d'entre elles admettent séparation d'échelles
We first give a review of the geometrical techniques (in particular G-structures and Generalized Complex Geometry) that are currently used in the study of supersymmetric N=1 compactifications. Then we focus on the study of type IIB compactifications to four dimensional Anti de Sitter vacua with N=1 supersymmetry. We give the general conditions that supersymmetry imposes on the solutions in particular, the internal manifold must have SU(2)-structure. Then we perform an exhaustive search of such vacua on cosets and group manifold. With some assumptions on the SU(2) torsion classes and constant dilaton and warp factor, we find that such vacua are very rare : two on cosets and five on group manifolds. All of them are required to include intersecting O5 and O7-planes. This also means that there exist no sourceless AdS4 vacua. We then study scales separation on the vacua in order to look give some insights for four dimensional effective theory and found that only two of them admit scales separation

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Catino, Francesca. "Supersymmetry-breaking vacua in simple and extended supergravity and flux compactifications." Doctoral thesis, Università degli studi di Padova, 2012. http://hdl.handle.net/11577/3422963.

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The search for semi-realistic supergravity models, seen as the low-energy limit of superstring theory, strongly motivates the study of gauged supergravities and flux compactifications. Outstanding problems in this context are supersymmetry breaking, moduli stabilization and the generation of a small positive vacuum energy density. Whilst spontaneously broken N=1 supergravity is the only phenomenologically viable possibility in four dimensions, its vast arbitrariness is significantly reduced when considering consistent truncations of extended supergravities or, more generally, effective theories of flux compactifications. In this thesis we explore some aspects of supersymmetry breaking for which the constrained theoretical frameworks of extended supergravities and of flux compactifications play an important role. We begin by reviewing the basic structure of four-dimensional supergravities and of flux compactifications of the higher-dimensional ones. We then describe some original work on Fayet-Iliopoulos (FI) terms and de Sitter (dS) vacua: we introduce a novel distinction between genuine FI terms and impostors; we formulate a simple anomaly-free model with a genuine FI term, a classically stable dS vacuum and no global symmetries; we explore the relations between N=1 FI terms and their counterparts in extended supergravities, by discussing suitable truncations of the latter. We continue with other original work on the relation between M-theory compactifications with geometrical and non-geometrical fluxes, gauged N=8 supergravity in four dimensions and consistent N=1 truncations of the latter. In particular: we discuss the quadratic constraints on general fluxes in M-theory, relating them with the conditions on the embedding tensor that defines the gauged N=8 theory; we identify the fluxes generating four-parameter supersymmetry breaking à la Scherk-Schwarz, and comment on the one-loop stability of the resulting Minkowski background.
La ricerca di modelli semi-realistici di supergravità, visti come limite di bassa energia delle teorie di superstring, motivano fortemente lo studio delle teorie di supergravità con gruppi di gauge non banali e delle compattificazioni con flussi. In questo contesto, problemi ancora aperti sono la rottura di supersimmetria, la stabilizzazione dei moduli e la generazione di densità di energia del vuoto piccola e positiva. Nonostante la supergravità N=1 con supersimmetria spontaneamente rotta sia l'unica possibilità fenomenologicamente valida in quattro dimensioni, la sua vasta arbitrarietà viene significativamente ridotta quando si considerano troncazioni consistenti di supergravità estese o, più in generale, le teorie efficaci di compattificazioni con flussi. In questa tesi si esplorano alcuni aspetti della rottura di supersimmetria in cui un ruolo importante \`e giocato dalla struttura teorica vincolata delle supergravità estese e delle compattificazioni con flussi. Si inizia con una breve rassegna sulle strutture basilari delle supergravità in quattro dimensioni e delle compattificazioni con flussi di modelli di supergravità formulati in dimensione più alta. Successivamente si descrive del lavoro originale sui termini di Fayet-Iliopoulos (FI) ed i vuoti di de Sitter (dS): si introduce una nuova distinzione tra termini di FI genuini e 'impostori'; si formula un semplice modello senza anomalie con un termine di FI genuino, un vuoto di dS classicamente stabile e senza simmetrie globali; si analizzano le relazioni tra i termini di FI N=1 e le loro controparti nelle supergravità estese, discutendo opportune troncazioni di queste ultime. Si prosegue poi con dell'altro lavoro originale sulla relazione tra le compattificazioni di M-teoria con flussi geometrici e non-geometrici, le teorie di supergravità N=8 in quattro dimensioni con gruppi di gauge non banali e le troncazioni consistenti di queste ultime a N=1. In particolare: si discutono i vincoli quadratici su tutti i flussi in M-teoria, collegandoli con le condizioni sul tensore di embedding che definisce la teoria di gauge N=8; si identificano i flussi che generano la rottura di supersimmetria à la Scherk-Schwarz con quattro parametri, e si commenta sulla stabilità a un loop del risultante vuoto di Minkowski.

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GALLERATI, ANTONIO. "On Supergravity Solutions." Doctoral thesis, Politecnico di Torino, 2015. http://hdl.handle.net/11583/2599560.

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This thesis is devoted to the study of specific solutions in extended supergravity theories. In the first introductory Chapter, we analyze the basic ideas underlying supersymmetry and supergravity models, focusing on the idea of supergravity as a powerful effective low energy approach to more fundamental underlying theories like superstring/M-theory. Subsequently, the thesis is divided into two parts: a first one (consisting in Chapter 2 and 3) in which black hole solutions to ungauged supergravity models are discussed; a second remaining part (Chapter 4 and 5) in which we analyze the construction of new vacuum solutions of the maximal theory, possibly defining new physics of superstring theory. In Chapter 2 the construction of ungauged supergravity theories is discussed more in detail, and the general features of particular black hole configurations are considered. Chapter 3 is devoted to the construction and classification of explicit black hole solutions and their extremal limits. This Chapter contains part of the original results obtained in my PhD project. In Chapter 4 we discuss the procedure of gauging a supergravity model, focusing on the maximal (N = 8) supergravity theory in four dimensions. Finally, Chapter 5 is dedicated to the systematic calculation of possible vacua of gauged supergravity models with N > 2 in Anti de Sitter background. This Chapter contains the remaining original results of my doctoral study period.

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Apruzzi, Fabio [Verfasser]. "Flux backreaction in supergravity : heterotic Calabi-Yau compactifications and new type II anti-de-Sitter vacua / Fabio Apruzzi." Hannover : Technische Informationsbibliothek und Universitätsbibliothek Hannover (TIB), 2015. http://d-nb.info/1077017642/34.

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Muranaka, Constantin [Verfasser], and Jan [Akademischer Betreuer] Louis. "Moduli spaces of Anti-de Sitter vacua in five-dimensional N=2 supergravity / Constantin Muranaka ; Betreuer: Jan Louis." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2017. http://d-nb.info/1140586815/34.

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SARACCO, FABIO. "Patching up II A singularities." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2013. http://hdl.handle.net/10281/40053.

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In the context of supergravity, the Romans mass is a scalar flux which has been shown to have peculiar properties as avoiding uplifting to M-theory; moreover, in several models it has been used in order to fix moduli. We show that the singularity in SuperGravity due to the O6 plane, that for a vanishing Romas mass is resolved in M-theory, is canceled by the presence of the Romans mass. The result has been obtained using the Generalized Complex Geometry formalism in SuperGravity. The same phenomenon is shown from the gauge theory point of view: the metric near the O6 in the massless case is the moduli space of the Seiberg-Witten model reduced to 3 dimensions. The deformation induced by the Romans mass is introduced by a Chern-Simons term in the Lagrangian.

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Andriot, David. "String theory flux vacua on twisted tori and generalized complex geometry." Paris 6, 2010. http://www.theses.fr/2010PA066144.

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Nous étudions des solutions avec flux de la théorie des cordes, sur un espace-temps dix-dimensionnel séparé en un espace-temps quatre-dimensionnel maximalement symétrique, et une variété interne six-dimensionnelle M, étant ici une variété résoluble (un tore twisté). Ces solutions sont intéressantes pour relier la théorie des cordes à une extension supersymétrique (SUSY) du modèle standard des particules, ou à des modèles cosmologiques. Pour des solutions SUSY des supergravités de type II, la présence de flux sur M aide à résoudre le problème des moduli. Une classe plus large de variétés que le simple Calabi-Yau peut alors être considérée pour M, et une caractérisation générale est donnée en terme de Géométrie Complexe Généralisée: M doit être un Calabi-Yau Généralisé (GCY). Il a été montré qu'une sous-classe de variétés résolubles sont des GCY, donc nous allons chercher des solutions sur de telles M. Pour y parvenir, nous utilisons une méthode de résolution algorithmique. Nous étudions ensuite un certain type de solutions: celles qui admettent une structure SU(2) intermédiaire. Par la suite, nous considérons le twist, une transformation qui relie des solutions sur le tore à d'autres sur variétés résolubles. En déterminant des contraintes sur le twist pour générer des solutions, nous parvenons à relier des solutions connues, et nous en trouvons une nouvelle. Nous l'utilisons également pour relier des solutions avec flux de la corde hétérotique. Nous considérons finalement des solutions de de Sitter dix-dimensionnelles. Plusieurs problèmes, dont la brisure de la SUSY, rendent la recherche de telles solutions difficile. Nous proposons un ansatz pour des sources brisant la SUSY qui aide à surmonter ces difficultés. Nous donnons alors une solution explicite sur variété résoluble, et discutons partiellement sa stabilité quatre-dimensionnelle.

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Ogetbil, Orcan Bahri Günaydin Murat. "De Sitter vacua and N = 2 supergravity." 2008. http://etda.libraries.psu.edu/theses/approved/PSUonlyIndex/ETD-2765/index.html.

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Eckerle, Kate. "Capriccio For Strings: Collision-Mediated Parallel Transport in Curved Landscapes and Conifold-Enhanced Hierarchies Among Mirror Quintic Flux Vacua." Thesis, 2017. https://doi.org/10.7916/D85H7TH2.

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This dissertation begins with a review of Calabi-Yau manifolds and their moduli spaces, flux compactification largely tailored to the case of type IIb supergravity, and Coleman-De Luccia vacuum decay. The three chapters that follow present the results of novel research conducted as a graduate student. Our first project is concerned with bubble collisions in single scalar field theories with multiple vacua. Lorentz boosted solitons traveling in one spatial dimension are used as a proxy to the colliding 3-dimensional spherical bubble walls. Recent work found that at sufficiently high impact velocities collisions between such bubble vacua are governed by "free passage" dynamics in which field interactions can be ignored during the collision, providing a systematic process for populating local minima without quantum nucleation. We focus on the time period that follows the bubble collision and provide evidence that, for certain potentials, interactions can drive significant deviations from the free passage bubble profile, thwarting the production of a new patch with different field value. However, for simple polynomial potentials a fine-tuning of vacuum locations is required to reverse the free passage kick enough that the field in the collision region returns to the original bubble vacuum. Hence we deem classical transitions mediated by free passage robust. Our second project continues with soliton collisions in the limit of relativistic impact velocity, but with the new feature of nontrivial field space curvature. We establish a simple geometrical interpretation of such collisions in terms of a double family of field profiles whose tangent vector fields stand in mutual parallel transport. This provides a generalization of the well-known limit in flat field space (free passage). We investigate the limits of this approximation and illustrate our analytical results with numerical simulations. In our third and final project we investigate the distribution of field theories that arise from the low energy limit of flux vacua built on type IIb string theory compactified on the mirror quintic. For a large collection of these models, we numerically determine the distribution of Taylor coefficients in a polynomial expansion of each model's scalar potential to fourth order. We provide an analytic explanation of the proncounced hierarchies exhibited by the random sample of masses and couplings generated numerically. The analytic argument is based on the structure of masses in no scale supergravity and the divergence of the Yukawa coupling at the conifold point in the moduli space of the mirror quintic. Our results cast the superpotential vev as a random element whose capacity to cloud structure vanishes as the conifold is approached.

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Book chapters on the topic "Supergravity Vacua"

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Castellani, Leonardo, Riccardo D' Auria, and Pietro Fré. "(2,2) SUPERCONFORMAL FIELD THEORIES AND THE CLASSIFICATION OF N=1,D=4 HETEROTIC SUPERSTRING VACUA." In Supergravity and Superstrings: A Geometric Perspective, 2028–90. WORLD SCIENTIFIC, 1991. http://dx.doi.org/10.1142/9789814542388_0055.

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Conference papers on the topic "Supergravity Vacua"

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PANDA, SUDHAKAR. "VACUA IN N=4 GAUGED SUPERGRAVITY." In Proceedings of the 12th Regional Conference. WORLD SCIENTIFIC, 2007. http://dx.doi.org/10.1142/9789812770523_0022.

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Taylor, Washington. "Supergravity and String Vacua in Various Dimensions." In Proceedings of the 2010 Theoretical Advanced Study Institute in Elementary Particle Physics. WORLD SCIENTIFIC, 2011. http://dx.doi.org/10.1142/9789814350525_0006.

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Cvetič, Mirjam. "Stability of vacua and domain walls in supergravity and superstring theory." In Proceedings of the XXVI International Conference on High Energy Physics. Vol. II. AIP, 1992. http://dx.doi.org/10.1063/1.43394.

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