Massive Kaluza-Klein theories and their spontaneously broken symmetries
| Autor: | Hohm, Olaf |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2006 |
| Předmět: |
group theory: representation
algebra: Virasoro particle: multiplet thesis bibliography representation [group theory] nonlinear [sigma model] mass spectrum General Relativity and Quantum Cosmology High Energy Physics::Theory dimension: 10 3/2 [spin] 2 [spin] 10 [dimension] quantum gravity sigma model: nonlinear Virasoro [algebra] dimensional reduction spin: 2 supergravity string model multiplet [particle] spin: 3/2 Kaluza-Klein model |
| DOI: | 10.3204/pubdb-2016-01946 |
| Popis: | Universität Hamburg, Diss., 2006; 112 pp. (2006). = Universität Hamburg, Diss., 2006 In this thesis we investigate the effective actions for massive Kaluza-Klein states, focusing on the massive modes of spin-3/2 and spin-2 fields. To this end we determine the spontaneously broken gauge symmetries associated to these `higher spin' states and construct the unbroken phase of the Kaluza-Klein theory. We show that for the particular background AdS_3 x S*3 x S*3 a consistent coupling of the first massive spin-3/2 multiplet requires an enhancement of local supersymmetry, which in turn will be spontaneously broken in the Kaluza-Klein vacuum. The corresponding action is constructed as a gauged maximal supergravity in D=3. Subsequently, the symmetries underlying an infinite tower of massive spin-2 states are analyzed in case of a Kaluza-Klein compactification of four-dimensional gravity to D=3. It is shown that the resulting gravity-spin-2 theory is given by a Chern-Simons action of an affine algebra. The global symmetry is determined, which contains an affine extension of the Ehlers group. We show that the broken phase can in turn be constructed via gauging a certain subgroup of the global symmetry group. Finally, deformations of the Kaluza-Klein theory on AdS_3 x S*3 x S*3 and the corresponding symmetry breakings are analyzed as possible applications for the AdS/CFT correspondence. |
| Databáze: | OpenAIRE |
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