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23 papers · 2 filters
Geometry for the accelerating universe
Raffaele Punzi, Frederic P. Schuller, Mattias N. R. Wohlfarth
The Lorentzian spacetime metric is replaced by an area metric which naturally emerges as a generalized geometry in quantum string and gauge theory. Employing the area metric curvat…
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…
Transcendentality and Crossing
Niklas Beisert, Burkhard Eden, Matthias Staudacher
We discuss possible phase factors for the S-matrix of planar N=4 gauge theory, leading to modifications at four-loop order as compared to an earlier proposal. While these result in…
Adding flavour to the Polchinski-Strassler background
Riccardo Apreda, Johanna Erdmenger, Dieter Lust +1
As an extension of holography with flavour, we analyze in detail the embedding of a D7-brane probe into the Polchinski-Strassler gravity background, in which the breaking of confor…
Gravity and the standard model with neutrino mixing
Ali H. Chamseddine, Alain Connes, Matilde Marcolli
We present an effective unified theory based on noncommutative geometry for the standard model with neutrino mixing, minimally coupled to gravity. The unification is based on the s…
How Accurate is the Quantum String Bethe Ansatz?
Sakura Schafer-Nameki, Marija Zamaklar, Konstantin Zarembo
We compare solutions of the quantum string Bethe equations with explicit one-loop calculations in the sigma-model on AdS(5)xS(5). The Bethe ansatz exactly reproduces the spectrum o…