388 citations · 2.2k across the 49 of their papers we have counts for
4 papers · 1 filter
Open Descendents of U(2N) Orbifolds at Rational Radii
A. N. Schellekens, N. Sousa
We construct explicitly the open descendants of some exceptional automorphism invariants of U(2N) orbifolds. We focus on the case N=pq, p and q prime, and on the automorphisms of t…
Boundaries, crosscaps and simple currents
J. Fuchs, L. R. Huiszoon, A. N. Schellekens +2
Universal formulas for the boundary and crosscap coefficients are presented, which are valid for all symmetric simple current modifications of the charge conjugation invariant of a…
Crosscaps, Boundaries and T-Duality
L. R. Huiszoon, A. N. Schellekens
Open descendants with boundaries and crosscaps of non-trivial automorphism type are studied. We focus on the case where the bulk symmetry is broken to a Z_2 orbifold subalgebra. By…
Open strings, simple currents and fixed points
A. N. Schellekens
Some applications of simple current techniques and fixed point resolution to theories of open strings are discussed. In addition to a brief review of work presented in two recent p…