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10 papers · 2 filters
Graded D-branes and skew-categories
C. I. Lazaroiu
I describe extended gradings of open topological field theories in two dimensions in terms of skew categories, proving a result which alows one to translate between the formalism o…
Logarithmic corrections to higher twist scaling at strong coupling from AdS/CFT
S. Frolov, A. Tirziu, A. A. Tseytlin
We compute 1-loop correction E_1 to the energy of folded string in AdS_5 x S^5 (carrying spin S in AdS_5 and momentum J in S^5) using ``long string'' approximation in which S >> J…
The Zamolodchikov-Faddeev Algebra for AdS_5 x S^5 Superstring
Gleb Arutyunov, Sergey Frolov, Marija Zamaklar
We discuss the Zamolodchikov-Faddeev algebra for the superstring sigma-model on AdS_5 x S^5. We find the canonical su(2|2)^2 invariant S-matrix satisfying the standard Yang-Baxter…
Evidence for mass zeros of the fermionic determinant in four-dimensional quantum electrodynamics
M. P. Fry
The Euclidean fermionic determinant in four-dimensional quantum electrodynamics is considered as a function of the fermionic mass for a class of symmetric backgro…
Higgs Bundles, Gauge Theories and Quantum Groups
Anton A. Gerasimov, Samson L. Shatashvili
The appearance of the Bethe Ansatz equation for the Nonlinear Schrödinger equation in the equivariant integration over the moduli space of Higgs bundles is revisited. We argue that…
Generating the superpotential on a D-brane category: I
C. I. Lazaroiu
I study A-infinity enhancements of algebraic Calabi-Yau triangulated categories admitting a (triangle) generator, showing that the Serre pairing on such categories determines and i…