Gauge Defect Networks in Two-Dimensional CFT

An interpretation of the gauge anomaly of the two-dimensional multi-phase sigma model is presented in terms of an obstruction to the existence of a topological defect network implementing a local trivialisation of the gauged sigma model.Comment: 8 pages; The article is the author's contribution to the Proceedings of the XXIX International Colloquium on Group-Theoretical Methods in Physics (20-26 August 2012, Tianjin, China

Approach to reading through creative experiences

Administrators feel secure when their classroom reading teachers are conscientiously following the directives in the teacher\u27s manual. However, many creative and ambitious teachers are willing to break the barriers, remove the imposed limits and still experience an organized reading program. Therefore with this viewpoint in mind, the writer has intended this paper to fulfill a two-fold purpose: 1. to encourage teachers using the Basal Reader to enrich their young students by incorporating some aspects of the Language-Experience Approach. 2. to present evidence, through means of samples of children\u27s work and photographs, that the Language-Experience Approach stimulates and encourages students to free expression of their thoughts, feelings and creativity

A Cartan tale of the orbifold superstring

A geometrisation scheme internal to the category of Lie supergroups is discussed for the supersymmetric de Rham cocycles on the super-Minkowski group $\,\mathbb{T}\,$ which determine the standard super-$p$-brane dynamics with that target, and interpreted within Cartan's approach to the modelling of orbispaces of group actions by homotopy quotients. The ensuing higher geometric objects are shown to carry a canonical equivariant structure for the action of a discrete subgroup of $\,\mathbb{T}$, which results in their descent to the corresponding orbifolds of $\,\mathbb{T}\,$ and in the emergence of a novel class of superfield theories with defects.Comment: 11 pages, to appear in the Proceedings of the XII International Symposium on Quantum Theory and Symmetries, July 24-28 2023, Pragu