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Time delays of strings in D-particle backgrounds and vacuum refractive indices
Li, Tianjun; Mavromatos, Nick E.; Nanopoulos, Dimitri V.; Xie, Dan; Mavromatos, NE , Kings Coll London, Dept Phys, London WC2R 2LS, England
2009
发表期刊PHYSICS LETTERS B
ISSN0370-2693
卷号679期号:4页码:407-413
摘要Using standard techniques in string/D-brane scattering amplitude computations, we evaluate the scattering of open strings off D-particles in brane world scenarios. The D-particles are viewed as D3 branes wrapped Lip around three cycles, and their embedding in brane worlds constitutes a case of intersecting branes, among which strings are stretched, representing various types of excitations of the Standard Model (SM) particles in the low-energy limit. Our analysis, reveals interesting and novel selection rules for the resulting causal time delays, proportional to the energy of the incident matter state. from the processes of splitting, capture and re-emission of the latter by the D-particles. There are relatively large time delays only for excitations that belong to the Cartan subalgebra of the SM gauge group, which notably includes photons. We discuss the possible relevance of these results to models of space time foarn with non-trivial vacuum refractive index for photons and demonstrate how current astrophysical observations can be used to discriminate low- from high-string-scale models in this context. (C) 2009 Elsevier B.V. All rights reserved.
部门归属[Mavromatos, NE] Kings Coll London, Dept Phys, London WC2R 2LS, England; [Li, TJ; Nanopoulos, DV; Xie, D] Texas A&M Univ, George P & Cynthia W Mitchell Inst Fundamental Ph, College Stn, TX 77843 USA; [Li, TJ] Chinese Acad Sci, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, Beijing 100190, Peoples R China; [Nanopoulos, DV] Houston Adv Res Ctr, Astroparticle Phys Grp, The Woodlands, TX 77381 USA; [Nanopoulos, DV] Acad Athens, Div Nat Sci, Athens 10679, Greece
关键词Gamma-ray Bursts Quantum-gravity Foam Violation Principle
学科领域Physics
资助者Cambridge-Mitchell Collaboration in Theoretical Cosmology; Natural Science Foundation of China[10821504]; Chinese Academy of Sciences[KJCX3-SYW-N2]; European Union through the Marie Curie Research and Training Network UniverseNet[MRTN-2006-035863]; DOE[DE-FG02-95ER40917] ; Cambridge-Mitchell Collaboration in Theoretical Cosmology; Natural Science Foundation of China[10821504]; Chinese Academy of Sciences[KJCX3-SYW-N2]; European Union through the Marie Curie Research and Training Network UniverseNet[MRTN-2006-035863]; DOE[DE-FG02-95ER40917] ; Cambridge-Mitchell Collaboration in Theoretical Cosmology; Natural Science Foundation of China[10821504]; Chinese Academy of Sciences[KJCX3-SYW-N2]; European Union through the Marie Curie Research and Training Network UniverseNet[MRTN-2006-035863]; DOE[DE-FG02-95ER40917] ; Cambridge-Mitchell Collaboration in Theoretical Cosmology; Natural Science Foundation of China[10821504]; Chinese Academy of Sciences[KJCX3-SYW-N2]; European Union through the Marie Curie Research and Training Network UniverseNet[MRTN-2006-035863]; DOE[DE-FG02-95ER40917]
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收录类别SCI
资助者Cambridge-Mitchell Collaboration in Theoretical Cosmology; Natural Science Foundation of China[10821504]; Chinese Academy of Sciences[KJCX3-SYW-N2]; European Union through the Marie Curie Research and Training Network UniverseNet[MRTN-2006-035863]; DOE[DE-FG02-95ER40917] ; Cambridge-Mitchell Collaboration in Theoretical Cosmology; Natural Science Foundation of China[10821504]; Chinese Academy of Sciences[KJCX3-SYW-N2]; European Union through the Marie Curie Research and Training Network UniverseNet[MRTN-2006-035863]; DOE[DE-FG02-95ER40917] ; Cambridge-Mitchell Collaboration in Theoretical Cosmology; Natural Science Foundation of China[10821504]; Chinese Academy of Sciences[KJCX3-SYW-N2]; European Union through the Marie Curie Research and Training Network UniverseNet[MRTN-2006-035863]; DOE[DE-FG02-95ER40917] ; Cambridge-Mitchell Collaboration in Theoretical Cosmology; Natural Science Foundation of China[10821504]; Chinese Academy of Sciences[KJCX3-SYW-N2]; European Union through the Marie Curie Research and Training Network UniverseNet[MRTN-2006-035863]; DOE[DE-FG02-95ER40917]
WOS记录号WOS:000269989800022
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/5255
专题理论物理所1978-2010年知识产出
通讯作者Mavromatos, NE , Kings Coll London, Dept Phys, London WC2R 2LS, England
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Li, Tianjun,Mavromatos, Nick E.,Nanopoulos, Dimitri V.,et al. Time delays of strings in D-particle backgrounds and vacuum refractive indices[J]. PHYSICS LETTERS B,2009,679(4):407-413.
APA Li, Tianjun,Mavromatos, Nick E.,Nanopoulos, Dimitri V.,Xie, Dan,&Mavromatos, NE , Kings Coll London, Dept Phys, London WC2R 2LS, England.(2009).Time delays of strings in D-particle backgrounds and vacuum refractive indices.PHYSICS LETTERS B,679(4),407-413.
MLA Li, Tianjun,et al."Time delays of strings in D-particle backgrounds and vacuum refractive indices".PHYSICS LETTERS B 679.4(2009):407-413.
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