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Regge behavior saves string theory from causality violations
Stockholm University, Nordic Institute for Theoretical Physics (Nordita). University of Copenhagen, Denmark.
Number of Authors: 4
2015 (English)In: Journal of High Energy Physics (JHEP), ISSN 1029-8479, E-ISSN 1126-6708, no 5, 144Article in journal (Refereed) Published
Abstract [en]

Higher-derivative corrections to the Einstein-Hilbert action are present in bosonic string theory leading to the potential causality violations recently pointed out by Camanho et al. [1]. We analyze in detail this question by considering high-energy string-brane collisions at impact parameters b <= l(s) (the string-length parameter) with l(s) >> R-p (the characteristic scale of the Dp-brane geometry). If we keep only the contribution of the massless states causality is violated for a set of initial states whose polarization is suitably chosen with respect to the impact parameter vector. Such violations are instead neatly avoided when the full structure of string theory - and in particular its Regge behavior is taken into account.

Place, publisher, year, edition, pages
2015. no 5, 144
Keyword [en]
D-branes, Bosonic Strings, Models of Quantum Gravity
National Category
Physical Sciences
URN: urn:nbn:se:su:diva-118533DOI: 10.1007/JHEP05(2015)144ISI: 000355345100002OAI: diva2:826528
Available from: 2015-06-25 Created: 2015-06-22 Last updated: 2015-06-25Bibliographically approved

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