570 research outputs found

    Developments over the last 60 years in diffuse large B-cell lymphomas

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    At the time of the formation of the British Society of Haematology diffuse large B-cell lymphoma was not recognised as a specific entity and was included in the category of ‘large cell’ or ‘aggressive’ lymphomas. These were fatal in 95% of cases. Today the cure rate in adults entered into clinical trials is ~70% and a large number of British physicians have contributed to this progress

    Chern-Simons Actions and Their Gaugings in 4D, N=1 Superspace

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    We gauge the abelian hierarchy of tensor fields in 4D by a Lie algebra. The resulting non-abelian tensor hierarchy can be interpreted via an equivariant chain complex. We lift this structure to N=1 superspace by constructing superfield analogs for the tensor fields, along with covariant superfield strengths. Next we construct Chern-Simons actions, for both the bosonic and N=1 cases, and note that the condition of gauge invariance can be presented cohomologically. Finally, we provide an explicit realization of these structures by dimensional reduction, for example by reducing the three-form of eleven-dimensional supergravity into a superspace with manifest 4D, N=1 supersymmetry.Comment: 40pp, v2 added reference

    Abelian Tensor Hierarchy in 4D, N=1 Superspace

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    With the goal of constructing the supersymmetric action for all fields, massless and massive, obtained by Kaluza-Klein compactification from type II theory or M-theory in a closed form, we embed the (Abelian) tensor hierarchy of p-forms in four-dimensional, N=1 superspace and construct its Chern-Simons-like invariants. When specialized to the case in which the tensors arise from a higher-dimensional theory, the invariants may be interpreted as higher-dimensional Chern-Simons forms reduced to four dimensions. As an application of the formalism, we construct the eleven-dimensional Chern-Simons form in terms of four-dimensional, N=1 superfields.Comment: 31 page
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