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Showing 1 to 20 of 46 for “"supergravity"”.
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New Classical Solutions in Supergravity
… we construct three classes of new solutions to supergravity theories in various dimensions and study their properties. The first class is reduction ansatz of 10D and 11D supergravity on Ricci-flat and noncompact manifolds. These reductions are from a scaling limit of the famous spherical …
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Collinear Supergravity at Linear Order
… the two. We use a similar approach to obtain a supergravity Lagrangian while using a non-conventional gauge fixing choice. The constructed Lagrangian maintains some similarities to the above two cases. We also identify the form of gauge field-current coupling as well as gravity-current coupling …
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5D Supersymmetric Orbifolds: Supergravity/Phenomenological Aspects
… a superfield description of 5D orbifold N = 2 supergravity coupled to vector and hyper multiplets. The basic building blocks are N = 1 supermultiplets obtained as reductions of the full multiplets of N = 2 conformal supersymmetry by Fujita, Kugo and Ohashi. After identifying the relevant …
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Vacua of Marginal Deformations in Gauged Supergravity Models
L'abstract è presente nell'allegato / the abstract is in the attachment
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Supersymmetry, supergravity, and String Theory based inflationary cosmology
… gravity at energy scales of the early universe, supergravity is examined as well. Having considered inflation in the context of supersymmetry and supergravity, it is therefore natural to present the role of string theory in inflationary model building. As a result, axion monodromy is considered. …
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Six Dimensional Supergravity, Spinorial Geometry and (1,0)-Superconformal Theories
… solutions of (1,0)<br/>six dimensional supergravity theory coupled to any number of tensor, vector and<br/>scalar multiplets. The methodology used to solve the Killing spinor equations will be based on the spinorial geometry technique. Therefore, we begin by giving details of the …
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Topological BPS charges in 10- and 11-dimensional supergravity
… various BPS branes of the IIA, IIB and $D=11$ supergravity theories. These expressions are related to the structure of the SUSY algebras in curved spacetimes. We consider charges for all the M-, NS- and D-branes as well as the Kaluza-Klein monopoles. Additionally we consider the …
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Lessons from the landscape of six-dimensional supergravity theories
Comparing the set of supergravity theories allowed by low-energy consistency conditions with the set of string vacua provides useful insights into quantum gravity and string theory. In fact, such a "landscape analysis" for ten-dimensional supergravity theories was at the core of the exciting series …
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The eleven dimensional supergravity equations, resolutions and Lefschetz fiber metrics
… the first part, we study the eleven dimensional supergravity equations on B 7 x S 4 considered as an edge manifold. We compute the indicial roots of the linearized system using the Hodge decomposition, and using the edge calculus and scattering theory we prove that the moduli space of solutions, …
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The propagator for graviton modes in supergravity on ADS5 x S5
… for k ≥ 0 Kaluza-Klein modes of the graviton in supergravity (SUGRA) on AdS5 X S5 is calculated in part. This propagator could be useful in calculations of four-leg scattering amplitudes as a further test of the proposed holographic duality between SUGRA on AdSd and the conformal field theory …
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SOLUTIONS OF MATTER-COUPLED HALF-MAXIMAL GAUGED SUPERGRAVITY IN FOUR AND FIVE DIMENSIONS
… solutions of matter-coupled half- maximal gauged supergravity (SUGRA) in four and five dimensions using the embedding tensor formalism. In the first part, we study the 5D N = 4 gauged supergravity coupled to five vector multiplets with compact gauge group U(1) × SU(2) × SU(2), as well as …
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An Orbifold Geometry in Holography, or: How the spindle fits into supergravity and supersymmetric quantum field theory
L'abstract è presente nell'allegato / the abstract is in the attachment
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Wordline approach to higher spin fields
… models which employ extended ”one dimensional supergravity” on the worldline, and their relation to the theory of higher spin fields (HS). In the first part of this work we have described the classical theory of massless spinning particles with an SO(N) extended supergravity multiplet on the …
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Classification of base geometries in F-theory
… dimensions, we produce a large number of minimal supergravity models in six or four spacetime dimensions. In this thesis, I will describe a current classification program of these elliptic Calabi-Yau manifolds. Specifically, I will be focusing on the part of classifying complex base manifolds of …
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Renormalisation Group Flows in Lifshitz Holography
… is the 6 dimensional Romans N = 4 massive gauged supergravity which supports 4D Lifshitz solutions. In each case we review the exact solutions that have been found previously, and then solve the linearised equations of motion around these solutions. These enable us to conjecture the existence of a …
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Black holes and solitons in string theory and M-theory: a low energy limit analysis
… the gauge fields and their uplifts to type IIB supergravity. There exists a BPS limit for a specific relation between the boundary values of the gauge fields, leading to 1/8-BPS configurations. We study the phase diagram of this sector of the theory and found that, generally, there are two …
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Higher Derivative Corrections to the Low-Energy E ective Action of Type IIA/B String Theory and M-theory
The type IIA and type IIB supergravity actions in d = 10 dimensions are the low-energy eective theories of type IIA and IIB string theory. In addition, the unique eleven dimensional supergravity theory is the low-energy eective action of M-theory. Higher order corrections to the low-energy eective …
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Magnetic charges and phase space renormalization of gravity
… this thesis, we study the dual charges of N = 1 supergravity in asymptotically flat spacetime. The action considered is the usual supergravity action with a topological contribution. This is the Nieh-Yan term and the magnetic term of the free Rarita-Schwinger field. Through methods of the …
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Aspects of SU(2|4) symmetric field theories and the Lin-Maldacena geometries
… Yang-Mills theory on R×S³/Zk. We find the supergravity solutions dual to generic vacua of the Plane-Wave Matrix Model and maximally supersymmetric Yang-Mills theory on R×S². We use the supergravity duals to calculate new instanton amplitudes for the Plane-Wave Matrix Model at strong …
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Supersymmetric backgrounds of M-theory and AdS4/CFT3 correspondence
… general N = 2 supersymmetric solutions of d = 11 supergravity consisting of a warped product of four-dimensional anti-de-Sitter space with a sevendimensional Riemannian manifold Y7. We show that the necessary and sufficient conditions for supersymmetry can be phrased in terms of a local …
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