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- The University of OsakaJP5 papers
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- High Energy Accelerator Research OrganizationJP2 papers
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4 papers · 1 filter
Non-anticommutative solitons
Sergei V. Ketov, Olaf Lechtenfeld
Certain supersymmetric sigma models in 2+1 dimensions feature multi-soliton solutions, with and without scattering. We subject these systems to a non-anticommutative deformation by…
On the quartic curvature gravity in the context of FRW cosmology
M. Iihoshi, S. V. Ketov
We consider the purely gravitational fourth-order (in the spacetime curvature) quantum corrections to the Einstein-Hilbert gravity action, coming from superstrings in the leading o…
Nonperturbative deformation of D-brane states by the world sheet noncommutativity
Manabu Irisawa
By introducing the noncommutativity in the world sheet, we discuss a modification of the D-brane states in the closed string theory. In particular we show how the world sheet nonco…
Nonperturbative low-energy effective action of the universal hypermultiplet
Sergei V. Ketov
The non-perturbative (D-instanton corrected) low-energy effective action of the universal hypermultiplet in the type-IIA string theory compactified on a Calabi-Yau threefold is cal…