Galactic Neutrino Communication
John G. Learned, Sandip Pakvasa, and A. Zee

TL;DR
This paper explores the feasibility of galactic communication using neutrinos, proposing specific high-energy neutrino schemes that could be detectable with current or near-future technology.
Contribution
It introduces novel neutrino-based communication schemes utilizing resonant energies and particle beams, advancing the concept of interstellar messaging technology.
Findings
Resonant neutrino energy near 6.3 PeV is optimal for communication.
Proposed schemes can encode information via timing and particle content.
Current neutrino detectors could potentially detect such signals.
Abstract
We examine the possibility to employ neutrinos to communicate within the galaxy. We discuss various issues associated with transmission and reception, and suggest that the resonant neutrino energy near 6.3 PeV may be most appropriate. In one scheme we propose to make Z^o particles in an overtaking e^+ - e^- collider such that the resulting decay neutrinos are near the W^- resonance on electrons in the laboratory. Information is encoded via time structure of the beam. In another scheme we propose to use a 30 PeV pion accelerator to create neutrino or anti-neutrino beams. The latter encodes information via the particle/anti-particle content of the beam, as well as timing. Moreover, the latter beam requires far less power, and can be accomplished with presently foreseeable technology. Such signals from an advanced civilization, should they exist, will be eminently detectable in neutrino…
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