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pro vyhledávání: '"Lindström, U."'
Autor:
Howe, P. S., Lindström, U.
An exotic linearised theory of superconformal gravity in D = 6, (4,0) superspace, proposed by C. Hull, is discussed in loop space with focus on its bosonic sector. Pursuing an analogy to the loop space version of the system of a two form B and its fi
Externí odkaz:
http://arxiv.org/abs/2412.16292
Autor:
Howe, P. S., Lindström, U.
Superconformal geometries in spacetime dimensions $D=3,4,{5}$ and $6$ are discussed in terms of local supertwistor bundles over standard superspace. These natually admit superconformal connections as matrix-valued one-forms. In order to make contact
Externí odkaz:
http://arxiv.org/abs/2012.03282
Autor:
Howe, P. S., Lindström, U.
The local supertwistor formalism, which involves a superconformal connection acting on the bundle of such objects over superspace, is used to investigate superconformal geometry in six dimensions. The geometry corresponding to (1, 0) and (2, 0) off-s
Externí odkaz:
http://arxiv.org/abs/2008.10302
We find the T-duality transformation rules for 2-dimensional (2,1) supersymmetric sigma-models in (2,1) superspace. Our results clarify certain aspects of the (2,1) sigma model geometry relevant to the discussion of T-duality. The complexified dualit
Externí odkaz:
http://arxiv.org/abs/1901.00662
Autor:
Howe, P. S., Lindström, U.
A Killing-Yano tensor is an antisymmetric tensor obeying a first-order differential constraint similar to that obeyed by a Killing vector. In this article we consider generalisations of such objects, focusing on the conformal case. These generalised
Externí odkaz:
http://arxiv.org/abs/1808.00583
Akademický článek
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Autor:
Howe, P. S., Lindström, U.
A super-Laplacian is a set of differential operators in superspace whose highest-dimensional component is given by the spacetime Laplacian. Symmetries of super-Laplacians are given by linear differential operators of arbitrary finite degree and are d
Externí odkaz:
http://arxiv.org/abs/1612.06787
Autor:
Howe, P. S., Lindström, U.
The notion of a Killing tensor is generalised to a superspace setting. Conserved quantities associated with these are defined for superparticles and Poisson brackets are used to define a supersymmetric version of the Schouten-Nijenhuis bracket. Super
Externí odkaz:
http://arxiv.org/abs/1511.04575
Publikováno v:
JHEP 0910:062,2009
We introduce and study the notion of a biholomorphic gerbe with connection. The biholomorphic gerbe provides a natural geometrical framework for generalized Kahler geometry in a manner analogous to the way a holomorphic line bundle is related to Kahl
Externí odkaz:
http://arxiv.org/abs/0811.3615
Autor:
Lindström, U.
This set of lectures contain a brief review of some basic supersymmetry and its representations, with emphasis on superspace and superfields. Starting from the Poincar\'e group, the supersymmetric extensions allowed by the Coleman-Mandula theorem and
Externí odkaz:
http://arxiv.org/abs/hep-th/0204016