13 citations · 34 across the 4 of their papers we have counts for
4 papers
D-Brane Scattering of N=2 Strings
K. Juenemann, Bernd Spendig
The amplitudes for emission and scattering of N=2 strings off D-branes are calculated. We consider in detail the amplitudes <cc> and <occ> for the different types of D-branes. For…
Ward identities and the vanishing theorem for loop amplitudes of the closed N=2 string
Klaus Junemann, Olaf Lechtenfeld
The existence of a ground ring of ghost number zero operators in the chiral BRST cohomology of the N=2 string is used to derive an infinite set of Ward identities for the closed-st…
Non-local symmetries of the closed N=2 string
Klaus Junemann, Olaf Lechtenfeld, Alexander D. Popov
By carefully analysing the picture-dependence of the BRST cohomology an infinite set of symmetry charges of the closed N=2 string is identified. The transformation laws of the phys…
Chiral BRST Cohomology of N=2 Strings at Arbitrary Ghost and Picture Number
Klaus Junemann, Olaf Lechtenfeld
We compute the BRST cohomology of the holomorphic part of the N=2 string at arbitrary ghost and picture number. We confirm the expectation that the relative cohomology at non-zero…