87 citations · 268 across the 8 of their papers we have counts for
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Vertical Integration from the Large Hilbert Space
Theodore Erler, Sebastian Konopka
We develop an alternative description of the procedure of vertical integration based on the observation that amplitudes can be written in BRST exact form in the large Hilbert space…
One Loop Tadpole in Heterotic String Field Theory
Theodore Erler, Sebastian Konopka, Ivo Sachs
We compute the off-shell 1-loop tadpole amplitude in heterotic string field theory. With a special choice of cubic vertex, we show that this amplitude can be computed exactly. We o…
Open Superstring Field Theory on the Restricted Hilbert Space
Sebastian Konopka, Ivo Sachs
Recently an action for open superstring field theory was proposed where the Neveu-Schwarz sector is formulated in the large Hilbert space while the Ramond sector lives in a restric…
The S-Matrix of superstring field theory
Sebastian Konopka
We show that the classical S-matrix calculated from the recently proposed superstring field theories give the correct perturbative S-matrix. In the proof we exploit the fact that t…
Ramond Equations of Motion in Superstring Field Theory
Theodore Erler, Sebastian Konopka, Ivo Sachs
We extend the recently constructed NS superstring field theories in the small Hilbert space to give classical field equations for all superstring theories, including Ramond sectors…
NS-NS Sector of Closed Superstring Field Theory
Theodore Erler, Sebastian Konopka, Ivo Sachs
We give a construction for a general class of vertices in superstring field theory which include integration over bosonic moduli as well as the required picture changing insertions…
Resolving Witten's Superstring Field Theory
Theodore Erler, Sebastian Konopka, Ivo Sachs
We regulate Witten's open superstring field theory by replacing the picture-changing insertion at the midpoint with a contour integral of picture changing insertions over the half-…
Non Abelian orbifold compactifications of the heterotic string
Sebastian J. H. Konopka
I consider the construction of heterotic orbifold models based on a toroidal orbifold with non Abelian point group. I construct an explicit model based on the point group and…