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Tachyon Condensation in Noncommutative Gauge Theory
Per Kraus, Arvind Rajaraman, Stephen Shenker
We show that the decay of the D2-\bar{D2} system with large worldvolume magnetic fields can be described in noncommutative gauge theory. Tachyon condensation in this system describ…
Exact Noncommutative Solitons
Jeffrey A. Harvey, Per Kraus, Finn Larsen
We find exact solitons in a large class of noncommutative gauge theories using a simple solution generating technique. The solitons in the effective field theory description of ope…
Tensionless Branes and Discrete Gauge Symmetry
Jeffrey A. Harvey, Per Kraus, Finn Larsen
We show that the tensionless branes found recently on non-BPS D-branes using non-commutative field theory are in fact gauge equivalent to the vacuum under a discrete gauge symmetry…
D-branes and Strings as Non-commutative Solitons
Jeffrey A. Harvey, Per Kraus, Finn Larsen +1
The non-commutative geometry of a large auxiliary -field simplifies the construction of D-branes as solitons in open string field theory. Similarly, fundamental strings are cons…
D-Branes as Unstable Lumps in Bosonic Open String Field Theory
Jeffrey A. Harvey, Per Kraus
We construct Dp-branes in bosonic string theory as unstable lumps in a truncated string field theory of open strings on a D25-brane. We find that the lowest level truncation gives…
D-Sphalerons and the Topology of String Configuration Space
Jeffrey A. Harvey, Petr Horava, Per Kraus
We show that unstable D-branes play the role of ``D-sphalerons'' in string theory. Their existence implies that the configuration space of Type II string theory has a complicated h…