93 citations · 134 across the 5 of their papers we have counts for
5 papers
From Loop Space Mechanics to Nonabelian Strings
Urs Schreiber
Lifting supersymmetric quantum mechanics to loop space yields the superstring. A particle charged under a fiber bundle thereby turns into a string charged under a 2-bundle, or gerb…
Higher Gauge Theory: 2-Connections on 2-Bundles
John Baez, Urs Schreiber
Connections and curvings on gerbes are beginning to play a vital role in differential geometry and mathematical physics -- first abelian gerbes, and more recently nonabelian gerbes…
Discrete Differential Geometry on causal graphs
Eric Forgy, Urs Schreiber
Differential calculus on discrete spaces is studied in the manner of non-commutative geometry by representing the differential calculus by an operator algebra on a suitable Krein s…
Nonabelian 2-forms and loop space connections from SCFT deformations
Urs Schreiber
It is shown how the deformation of the superconformal generators on the string's worldsheet by a nonabelian super-Wilson line gives rise to a covariant exterior derivative on loop…
Pohlmeyer invariants are expressible in terms of DDF invariants
Urs Schreiber
It is shown that the Pohlmeyer invariants of the classical bosonic string are a proper subset of the classical DDF invariants. This makes the quantization of the Pohlmeyer invarian…