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40 papers · 2 filters
Ginsparg-Wilson Relation and 't Hooft-Polyakov Monopole on Fuzzy 2-Sphere
Hajime Aoki, Satoshi Iso, Keiichi Nagao
We investigate several properties of Ginsparg-Wilson fermion on fuzzy 2-sphere. We first examine chiral anomaly up to the second order of the gauge field and show that it is indeed…
Giant Hedge-Hogs: Spikes on Giant Gravitons
Darius Sadri, M. M. Sheikh-Jabbari
We consider giant gravitons on the maximally supersymmetric plane-wave background of type IIB string theory. Fixing the light-cone gauge, we work out the low energy effective light…
On Brane Inflation With Volume Stabilization
Jonathan P. Hsu, Renata Kallosh, Sergey Prokushkin
The distance between BPS branes in string theory corresponds to a flat direction in the effective potential. Small deviations from supersymmetry may lead to a small uplifting of th…
Compactifications of Heterotic Strings on Non-Kahler Complex Manifolds: II
Katrin Becker, Melanie Becker, Keshav Dasgupta +2
We continue our study of heterotic compactifications on non-Kahler complex manifolds with torsion. We give further evidence of the consistency of the six-dimensional manifold prese…
Heterotic Moduli Stabilization with Fractional Chern-Simons Invariants
Sergei Gukov, Shamit Kachru, Xiao Liu +1
We show that fractional flux from Wilson lines can stabilize the moduli of heterotic string compactifications on Calabi-Yau threefolds. We observe that the Wilson lines used in GUT…
Matter loops corrected modified gravity in Palatini formulation
Xin-He Meng, Peng Wang
Recently, corrections to the standard Einstein-Hilbert action are proposed to explain the current cosmic acceleration in stead of introducing dark energy. In the Palatini formulati…