Noncommutative Tachyons

By Keshav Dasgupta, S. Mukhi, G. Rajesh. 2000

155 citations recorded by the source corpus.

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.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics, Statistical and Nonlinear Physics

View Paper: https://www.semanticscholar.org/paper/f8e81e5cd68d0057471d2bc74dce17dea2a49690

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Citations in the corpus

Half-strings, projectors and multiple D-branes (2001, result): “This situation is analogous to the one that arises in the study of non-commutative solitons [8, 9, 10, 11, 12].”
Remarks on Tachyon Condensation in Superstring Field Theory (2000, result): “Exact results for tachyon condensation have also been obtained by introducing noncommutativity [16,17,18,19]; the recent results of [20] might give a closer relation between this approach and BSFT.”
Classical solutions in string field theory around the tachyon vacuum (2001, background): “(This is precisely what happens in the case of p-adic string theory [29, 30, 31], background independent open string field theory [32, 33, 34, 35, 36, 37, 38, 39, 40], as well as non-commutative solitons [41, 42, 43].”
Unstable solitons in noncommutative gauge theory (2000, result): “It may be useful to contrast the present work with the construction of D-branes as noncommutative tachyon solitons [14,15,5,12].”
Komaba Lectures on Noncommutative Solitons and D-Branes (2001, background): “We will see that the noncommutative solitons studied in the previous lectures can be identified with lowerdimensional D-branes which arise from tachyon condensation [69,38].”
Quantum field theory on noncommutative spaces (2001, background): “For instance, stable noncommutative solitons, which have no counterparts in ordinary field theory, have been constructed by representing the Weyl operator algebra on a multi-particle quantum mechanical Hilbert space [64, 65].”
Observables of Non-Commutative Gauge Theories (2000, background): “Perhaps the generalization is simpler in the large B field limit where the string field theory algebra factors out [25, 26, 27].”
Phase structure of non-commutative scalar field theories (2000, background): “n into a semiclassical conﬁguration known as the non-commutative soliton [7]. It has been argued [8] that this conﬁguration represents the collapse of a bosonic Dp-brane into a D(p-2)-brane; see also [32] for closely related work. The role of these objects in our quantum considerations is not entire”
String Field Theory Around the Tachyon Vacuum (2000, methodology): “Support for these conjectures comes from the analysis of the world-sheet theory [1, 3, 4, 5, 6, 7, 8], cubic open string field theory [9, 10, 11, 12, 13, 14, 15, 16, 17, 19, 20, 21, 22, 23, 24], noncommutative limit of the effective field theory of the tachyon [25, 26, 27, 28, 29, 30], background in”
Introduction to M(atrix) theory and noncommutative geometry (2000, background): “Both the exact solitonic and the approximate ones at θ → ∞ found an application in the description of D-branes as solitons of the tachyon field in the limit of large B-field [54], [55].”
A Note on Background Independence in Noncommutative Gauge Theories, Matrix Model and Tachyon Condensation (2000, background): “More recently, following the work of Sen [8] the phenomenon of tachyon condensation on D-branes was studied by various people including [9-16].”
Noncommutative Tachyons And String Field Theory (2000, methodology): “As noted in [2,3], it is perplexing that in this approximation the tension of the D8-brane appears to be zero.”
Exact noncommutative solitons (2000, unknown): “ar X iv :h ep -t h/ 00 10 06 0v 3 1 J an 2 00 1 hep-th/0010060 EFI-00-38 Exact Noncommutative Solitons Jeffrey A. Harvey, Per Kraus, and Finn Larsen Enrico Fermi Institute and Department of Physics University of Chicago,”
A Review on Tachyon Condensation in Open String Field Theories (2001, unknown): “46) on a non-BPS D9-brane is interpreted as a D8-brane which winds along the angular coordinate θ in the (x(1), x(2))-plane and is smeared over the radial coordinate r, whose distribution function in the radial direction is given by 2e−r 2/θ [104].”