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Department of Mathematical Sciences

Seminar Archives

On this page you can find information about seminars in this and previous academic years, where available on the database.

Maths HEP Lunchtime Seminars: Generalised permutation branes

Presented by Thomas Quella (King's College),

7 October 2005 00:00 in CM221

"On geometrical grounds we propose a new class of non-factorising D-branes in the product group GxG where the fluxes and metrics on the two factors do not necessarily coincide. They generalise the maximally symmetric permutation branes which are known to exist when the fluxes agree, but break the symmetry down to the diagonal current algebra in the generic case. For SU(2)xSU(2) our new branes provide a natural and complete explanation for the charges predicted by K-theory including their torsion. We briefly comment on possible extensions to cosets, the construction in the framework of CFT and applications to Gepner models and defect lines. "

Contact daniele.dorigoni@durham.ac.uk or jyotirmoy.bhattacharya@durham.ac.uk for more information