期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 5, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP05(2015)144
关键词
D-branes; Bosonic Strings; Models of Quantum Gravity
资金
- Science and Technology Facilities Council [ST/L000415/1]
- STFC [ST/L000415/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/L000415/1] Funding Source: researchfish
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.
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