Quantum-Gravity phenomenology and high energy particle propagation

Aloisio, Roberto; Blasi, Pasquale; Galante, A.; Ghia, P. L.; Grillo, A. F.

doi:10.1016/j.nuclphysbps.2004.10.014

Cited by 1 publication

(2 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Aloisio et al [11,12] and others [13,14] have considered how non-systematic dispersion fluctuations affect the propagation of ultra-high-energy cosmic rays (UHECR) and analysed shifts in the thresholds for processes such as the GZK reaction, p + γ CMB → p + π 0 . We shall focus on the conclusions of Aloisio et al, although the general arguments are applicable to any non-systematic threshold analysis.…”

Section: Introductionmentioning

confidence: 99%

“…We shall focus on the conclusions of Aloisio et al, although the general arguments are applicable to any non-systematic threshold analysis. In [11,12] the authors use a non-systematic dispersion relation similar to (1) where the coefficient η A varies randomly as the particle propagates. It is further assumed that the time scale of the variation is set by the de Broglie frequency 1/E of the UHECR.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Constraints from cosmic rays on non-systematic Lorentz violation

Basu¹,

Mattingly²

2005

Class. Quantum Grav.

View full text Add to dashboard Cite

Abstract.In this article we analyze the radiation loss from a high energy cosmic ray proton propagating in a spacetime with non-systematic Lorentz violation. From an effective field theory perspective we illuminate flaws in previous attempts that use threshold approaches to analyze this problem. We argue that in general such approaches are of rather limited use when dealing with non-systematic Lorentz violating scenarios. The main issues we raise are a) the limited applicability of threshold energy conservation rules when translation invariance is broken and b) the large amounts of proton particle production due to the time dependence of the fluctuations. Ignoring particle production, we derive a constraint on the magnitude of velocity fluctuation |v f | < 10 −6.5 , much weaker than has been previously argued. However, we show that in fact particle production makes any such constraint completely unreliable.

show abstract