Space-time fluctuations and ultra-high energy cosmic ray interactions

被引:22
作者
Aloisio, R
Blasi, P
Galante, A
Ghia, PL
Grillo, AF
机构
[1] Ist Nazl Fis Nucl, Lab Nazl Gran Sasso, Laquila, Italy
[2] INAF, Osservat Astrofisico Arcetri, I-50125 Florence, Italy
[3] Univ Aquila, Dipartimento Fis, I-67100 Laquila, Italy
[4] CNR, IFSI, Sez Torino, I-10133 Turin, Italy
[5] Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy
关键词
D O I
10.1016/S0927-6505(02)00196-2
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The intimate geometry of space-time is expected to suffer stochastic fluctuations as a result of quantum gravitational effects. These fluctuations may induce observable consequences on the propagation of high energy particles over large distances, so that the strength and the characteristics of these fluctuations may be constrained, mainly in the range of energies of interest for cosmic ray physics. While invoked as a possible explanation for the detection of the puzzling cosmic rays with energies in excess of the threshold for photopion production (the so-called super-Greisen-Zatsepin-Kuzmin particles), we demonstrate here that lower energy observations may provide strong constraints on the role of a fluctuating space-time structure. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:127 / 133
页数:7
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