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Noncommutative Tachyons

Keshav Dasgupta·Sunil Mukhi·Govindan Rajesh
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Abstract

When unstable Dp-branes in type II string theory are placed in a B-field, the resulting tachyonic world-volume theory becomes noncommutative. We argue that for large noncommutativity parameter, condensation of the tachyon as a noncommutative soliton leads to new decay modes of the Dp-brane into (p-2)-brane configurations, which we interpret as suitably smeared BPS D(p-1)-branes. Some of these configurations are metastable. We discuss various generalizations of this decay process.

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Keshav Dasgupta, Sunil Mukhi, Govindan Rajesh. 2000-04-30. Noncommutative Tachyons. https://doi.org/10.1088/1126-6708%2F2000%2F06%2F022

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