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5 papers · 2 filters
A new diagrammatic representation for correlation functions in the in-in formalism
Marcello Musso
In this paper we provide an alternative method to compute correlation functions in the in-in formalism, with a modified set of Feynman rules to compute loop corrections. The diagra…
Open strings in Lie groups and associative products
Pierre Bieliavsky, Charles Jego, Jan Troost
Firstly, we generalize a semi-classical limit of open strings on D-branes in group manifolds. The limit gives rise to rigid open strings, whose dynamics can efficiently be describe…
Nonabelian Global Chiral Symmetry Realisation in the Two-Dimensional N Flavour Massless Schwinger Model
Laure Gouba, Jan Govaerts, M. Norbert Hounkonnou
The nonabelian global chiral symmetries of the two-dimensional N flavour massless Schwinger model are realised through bosonisation and a vertex operator construction.
Bosonization of the Schwinger Model by Noncommutative Chiral Bosons
Joseph Ben Geloun, Jan Govaerts, M. Norbert Hounkonnou
Bosonization of the Schwinger model with noncommutative chiral bosons is considered on a spacetime of cylinder topology. Using point splitting regularization, manifest gauge invari…
Topological Background Fields as Quantum Degrees of Freedom of Compactified Strings
Jan Govaerts, Florian Payen
It is shown that background fields of a topological character usually introduced as such in compactified string theories correspond to quantum degrees of freedom which parametrise…