منابع مشابه
Topological Matter in Four Dimensions
Topological models involving matter couplings to Donaldson-Witten theory are presented. The construction is carried using both, the topological algebra and its central extension, which arise from the twisting of N = 2 supersymmetry in four dimensions. The framework in which the construction is based is constituted by the superspace associated to these algebras. The models show new features of t...
متن کاملTopological Matter in Two Dimensions
Topological quantum field theories containing matter fields are constructed by twisting N = 2 supersymmetric quantum field theories. It is shown that N = 2 chiral (antichiral) multiplets lead to topological sigma models while N = 2 twisted chiral (twisted antichiral) multiplets lead to Landau-Ginzburg type topological quantum field theories. In addition, topological gravity in two dimensions is...
متن کاملTopological mass generation in four dimensions.
We show that in a large class of physically interesting systems the mass-generation phenomenon can be understood in terms of topological structures, without requiring a detailed knowledge of the underlying dynamics. This is first demonstrated by showing that Schwinger's mechanism for mass generation relies on topological structures of a two-dimensional gauge theory. In the same manner, correspo...
متن کاملTopological gravity in dimensions two and four
Recent work on gravity in two dimensions has a natural generalization to four dimensions. 1. Basic definitions 1.1 The (symmetric monoidal) two-category (Gravity)d+1 has objects: compact oriented d-manifolds, with • morphisms V0 → V1 : (d+ 1)-manifolds W with ∂W ∼= V op 0 t V1, and • diffeomorphisms W̃ →W as two-morphisms. The category Mor(V0, V1) with cobordisms from V0 to V1 as objects and dif...
متن کاملTopological Conformal Gravity in Four Dimensions
In this paper, we present a new formulation of topological conformal gravity in four dimensions. Such a theory was first considered by Witten as a possible gravitational counterpart of topological Yang–Mills theory, but several problems left it incomplete. The key in our approach is to realise a theory which describes deformations of conformally self-dual gravitational instantons. We first iden...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nuclear Physics B
سال: 1995
ISSN: 0550-3213
DOI: 10.1016/0550-3213(94)00512-d