Topological Charges of Noncommutative Soliton

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  • 1 September 2000
Abstract
The noncommutative soliton is characterized by the use of the projection operators in non-commutative space which is closely related to the K-theory of $C^*$-algebra. We consider the variations of projection operators in the moduli space along the commutative directions and discuss their topological charges. When applied to the string theory, it gives the modification of the brane charges embedded in the world volume due to tachyon background.

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