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- W1639667515 abstract "In these talks we review some of the recent results on open strings and noncommutative gauge theories, starting from the early calculations of open strings in a constant electromagnetic background. We discuss both the neutral string and the charged string. In the latter case, the scaling limit that leads to noncommutative abelian gauge theory can be generalized to a scaling limit in which multiple noncommutativity parameters enter. Our approach corresponds to expanding a theory with U(N) Chan-Paton factors around a background U(1)^N gauge field with different magnetic fields in each U(1). This scaling limit can be interpreted in terms of a matrix model. We also describe an open string model with a time-dependent noncommutativity parameter. This model is the open string version of a WZW model based on a non-semi-simple group. It has a time-dependent background, and a spacetime metric of the plane wave type supported by a Neveu-Schwarz two-form potential." @default.
- W1639667515 created "2016-06-24" @default.
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- W1639667515 date "2003-02-17" @default.
- W1639667515 modified "2023-09-27" @default.
- W1639667515 title "Strings and Noncommutativity" @default.
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