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- Centre National de la Recherche ScientifiqueFR62 papers
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15 papers · 2 filters
Manifest Supersymmetry in Non-Commutative Geometry
Chong-Sun Chu, Frederic Zamora
We consider the open superstring ending on a D-brane in the presence of a constant NS-NS B field, using the Green-Schwarz formalism. Quantizing in the light-cone gauge, we find tha…
On the effective action of stable non-BPS branes
Rodolfo Russo, Claudio A. Scrucca
We study the world-volume effective action of stable non-BPS branes present in Type II theories compactified on K3. In particular, by exploiting the conformal description of these…
Matrix Theory in a Constant C Field Background
Chong-Sun Chu, Pei-Ming Ho, Miao Li
D0-branes moving in a constant antisymmetric C field are found to be described by quantum mechanics of the supersymmetric matrix model with a similarity transformation. Sometimes t…
Scalar field theory limits of bosonic string amplitudes
Alberto Frizzo, Lorenzo Magnea, Rodolfo Russo
We describe in detail the techniques needed to compute scattering amplitudes for colored scalars from the infinite tension limit of bosonic string theory, up to two loops. These te…
M-Theory on S^1/Z_2 : New Facts from a Careful Analysis
Adel Bilal, Jean-Pierre Derendinger, Roger Sauser
We carefully re-examine the issues of solving the modified Bianchi identity, anomaly cancellations and flux quantization in the S^1/Z_2 orbifold of M-theory using the boundary-free…
Remarks on Defining the DLCQ of Quantum Field Theory as a Light-Like Limit
Adel Bilal
The issue of defining discrete light-cone quantization (DLCQ) in field theory as a light-like limit is investigated. This amounts to studying quantum field theory compactified on a…