首页>
外文OA文献
>Comment on 'The Lamb Shift and Ultra High Energy Cosmic Rays' and
Comment on 'Vacuum Polarization Energy Losses of High Energy Cosmic Rays'
【2h】
Comment on 'The Lamb Shift and Ultra High Energy Cosmic Rays' and
Comment on 'Vacuum Polarization Energy Losses of High Energy Cosmic Rays'
The cosmic rays spectrum has been shown to extend well beyond 10^20 eV. Withnearly 20 events observed in the last 40 years, it is now established thatparticles with energies near or above 10^21 eV. No nearby astrophysical objecthas been shown to correlate with the arrival directions of the highest energyevents, yet the exponential cut-off in the high energy end of the spectrum oneexpects to see in the case of far sources is not visible. It was recentlypointed out that the influence of the vacuum of quantum electrodynamics onparticle propagation could explain qualitatively this mystery. This note is acritic to these ideas.
展开▼
