Results 121 to 130 of about 86,398 (264)
$$dS_5$$ dS5 vacua from matter-coupled 5D $$N=4$$ N=4 gauged supergravity
European Physical Journal C: Particles and Fields, 2019 We study $$dS_5$$ dS5 vacua within matter-coupled $$N=4$$ N=4 gauged supergravity in five dimensions using the embedding tensor formalism. With a simple ansatz for solving the extremization and positivity of the scalar potential, we derive a set of ...
H. L. Dao, Parinya Karndumri
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Physics Letters B, 2014 We have constructed a large field N-flation model in the supergravity framework. In this simple set-up, N fields collectively drive inflation where each field traverses sub-Planckian field values. This has been realised with a generalisation of the single field chaotic inflation in Supergravity.
Das, Kumar, Dutta, Koushik
openaire +4 more sources
Unification of Gravity and Internal Interactions
Fortschritte der Physik, Volume 72, Issue 1, January 2024.Abstract In the gauge theoretic approach of gravity, general relativity is described by gauging the symmetry of the tangent manifold in four dimensions. Usually the dimension of the tangent space is considered to be equal to the dimension of the curved manifold. However, the tangent group of a manifold of dimension d is not necessarily SOd$SO_d$.
Spyros Konitopoulos +2 more
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European Physical Journal C: Particles and FieldsWe study holographic solutions describing RG flows across dimensions from five-dimensional $$N=2$$ N = 2 SCFT to SCFTs in three and two dimensions using matter-coupled F(4) gauged supergravity with $$ISO(3)\times U(1)$$ I S O ( 3 ) × U ( 1 ) gauge group.
Parinya Karndumri
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q‐Deformed Glueball Spectrum in AdS/QCD Correspondence
Advances in High Energy Physics, Volume 2024, Issue 1, 2024.This work presents the application of the q‐algebra in the glueball spectrum. This algebra is implemented through Jackson’s derivatives in a Schrödinger‐like equation resulting from the gravity fluctuations around the braneworld scenario in five dimensions.
Fabiano F. Santos +2 more
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Supergravity solutions with constant scalar invariants
, 2008 We study a class of constant scalar invariant (CSI) spacetimes, which belong to the higher-dimensional Kundt class, that are solutions of supergravity. We review the known CSI supergravity solutions in this class and we explicitly present a number of new
Coley, A., Fuster, A., Hervik, S.
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Spacetime Topology and the Laws of Black Hole-Soliton Mechanics
Entropy, 2017 The domain of outer communication of an asymptotically flat spactime must be simply connected. In five dimensions, this still allows for the possibility of an arbitrary number of 2-cycles supported by magnetic flux carried by Maxwell fields. As a result,
Hari K. Kunduri
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A Study of the Early Cosmic Dynamics in a Multifield Model of Inflation and Curvature Perturbations
Advances in Astronomy, Volume 2024, Issue 1, 2024.In this work, we study the cosmological dynamics of the early universe by employing a small field potential in the context of multifield inflation. By investigating analytically the cosmological observables, such as the number of e‐folds N, potential slow‐roll parameters ϵV, ηV, and spectral index ns which carry significant information, we show that ...
Muhammad Zahid Mughal +4 more
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Quantum No-Scale Regimes and String Moduli
Universe, 2018 We review that in no-scale models in perturbative string theory, flat, homogeneous and isotropic cosmological evolutions found at the quantum level can enter into “quantum no-scale regimes„ (QNSRs).
Hervé Partouche
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Towards a finite quantum supergravity [PDF]
arXiv, 2012 In this paper we study an N=1 supersymmetric extension of a perturbatively super-renormalizable (nonlocal)theory of gravity in four dimensions. The nonlocal supergravity theory is power-counting super-renormalizable and tree level unitary with the same particle content of the local N=1 supergravity (as simple example, unitarity of the three dimensional
arxiv