Particle Production on Half S-Brane

Klusoň, Josef

doi:10.1142/s0217751x04019585

Cited by 10 publications

(10 citation statements)

References 76 publications

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“…These findings differ significantly from the minisuperspace analysis of Strominger [4] (see also [15,16]). Strominger's toy model arises from a continuation of the Euclidean theory and consequently the parameter ν 0 does not appear.…”

Section: Introductioncontrasting

confidence: 95%

On minisuperspace models of S-branes

Fredenhagen¹,

Schomerus²

2003

J. High Energy Phys.

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In this note we reconsider the minisuperspace toy models for rolling and bouncing tachyons. We show that the theories require to choose boundary conditions at infinity since particles in an exponentially unbounded potential fall to infinity in finite world-sheet time. Using standard techniques from operator theory, we determine the possible boundary conditions and we compute the corresponding energy spectra and minisuperspace 3-point functions. Based on this analysis we argue in particular that world-sheet models of S-branes possess a discrete spectrum of conformal weights containing both positive and negative values. Finally, some suggestions are made for possible relations with previous studies of the minisuperspace theory.

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Section: Introductioncontrasting

confidence: 95%

On minisuperspace models of S-branes

Fredenhagen¹,

Schomerus²

2003

J. High Energy Phys.

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“…In particular the rolling tachyon solution [2][3] provides an exact boundary CFT describing the decay of a bosonic D-brane. The rolling tachyon has been analyzed from various points of view, among them are open string particle production in the rolling tachyon solution [4,5,6], supergravity description of Sbranes [7,8,9,10], time dependent solutions in string field theory [11,12,13,14,15,16,17,18], thermodynamics [19], rolling tachyons in different backgrounds [20,21,22], radiation into closed strings [23,24,25], application to of rolling tachyons to cosmology [26,27,28,29] and generalizations to closed string tachyon condensation [30,31].…”

Section: Introductionmentioning

confidence: 99%

D-brane dynamics in thec=1matrix model

Gutperle

Kraus

2004

Phys. Rev. D

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Recent work has shown that unstable D-branes in two dimensional string theory are represented by eigenvalues in a dual matrix model. We elaborate on this proposal by showing how to systematically include higher order effects in string perturbation theory. The full closed string state produced by a rolling open string tachyon corresponds to a sum of string amplitudes with any number of boundaries and closed string vertex operators. These contributions are easily extracted from the matrix model. As in the AdS/CFT correspondence, the sum of planar diagrams in the open string theory is directly related to the classical theory in the bulk, i.e. sphere diagrams. We also comment on the description of static D-branes in the matrix model, in terms of a solution representing a deformed Fermi sea.

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“…These S-branes can be thought of as the creation and subsequent decay of an unstable brane. This process has recently attracted much attention [1,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47]. S-branes have been also extensively studied in supergravity approach with potentially interesting cosmological applications [50,51,52,53,54,5...…”

Section: Introductionmentioning

confidence: 99%