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  Curvature squared invariants in six-dimensional N = (1,0) supergravity

Butter, D., Novak, J., Ozkan, M., Pang, Y., & Tartaglino-Mazzucchelli, G. (2019). Curvature squared invariants in six-dimensional N = (1,0) supergravity. Journal of high energy physics: JHEP, 2019(04): 013. doi:10.1007/JHEP04(2019)013.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0001-FA33-C Version Permalink: http://hdl.handle.net/21.11116/0000-0003-7264-C
Genre: Journal Article

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Butter, Daniel, Author
Novak, Joseph1, Author              
Ozkan, Mehmet, Author
Pang, Yi1, Author
Tartaglino-Mazzucchelli, Gabriele, Author
Affiliations:
1Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_24014              

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Free keywords: High Energy Physics - Theory, hep-th
 Abstract: We describe the supersymmetric completion of several curvature-squared invariants for ${\cal N}=(1,0)$ supergravity in six dimensions. The construction of the invariants is based on a close interplay between superconformal tensor calculus and recently developed superspace techniques to study general off-shell supergravity-matter couplings. In the case of minimal off-shell Poincar\'e supergravity based on the dilaton-Weyl multiplet coupled to a linear multiplet as a conformal compensator, we describe off-shell supersymmetric completions for all the three possible purely gravitational curvature-squared terms in six dimensions: Riemann, Ricci, and scalar curvature squared. A linear combination of these invariants describes the off-shell completion of the Gauss-Bonnet term, recently presented in arXiv:1706.09330. We study properties of the Einstein-Gauss-Bonnet supergravity, which plays a central role in the effective low-energy description of $\alpha^\prime$-corrected string theory compactified to six dimensions, including a detailed analysis of the spectrum about the ${\rm AdS}_3\times {\rm S}^3$ solution. We also present a novel locally superconformal invariant based on a higher-derivative action for the linear multiplet. This invariant, which includes gravitational curvature-squared terms, can be defined both coupled to the standard-Weyl or dilaton-Weyl multiplet for conformal supergravity. In the first case, we show how the addition of this invariant to the supersymmetric Einstein-Hilbert term leads to a dynamically generated cosmological constant and non-supersymmetric (A)dS$_6$ solutions. In the dilaton-Weyl multiplet, the new off-shell invariant includes Ricci and scalar curvature-squared terms and possesses a nontrivial dependence on the dilaton field.

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 Dates: 2018-08-012019
 Publication Status: Published in print
 Pages: 67 pages
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 Rev. Method: -
 Identifiers: arXiv: 1808.00459
URI: http://arxiv.org/abs/1808.00459
DOI: 10.1007/JHEP04(2019)013
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Title: Journal of high energy physics : JHEP
Source Genre: Journal
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Publ. Info: Bologna, Italy : Società italiana di fisica
Pages: - Volume / Issue: 2019 (04) Sequence Number: 013 Start / End Page: - Identifier: ISSN: 1126-6708
CoNE: https://pure.mpg.de/cone/journals/resource/111021927548002