Secure communication in the twin paradox

TL;DR

This paper explores how relativistic effects influence secure communication channels, demonstrating that differences in aging due to gravity or motion can be exploited to enhance privacy in communication.

Contribution

It introduces models of communication within gravitational wells and twin paradox scenarios, highlighting how relativistic asymmetries can be used for secure data transmission.

Findings

Relativistic effects create asymmetries useful for privacy.

Models show potential for secure communication in gravitational and twin paradox setups.

Relativistic channel capacity depends on observers' aging rates.

Abstract

The channel capacity between two users is affected by relativistic effects. Under the presence of a fixed noise at the receiver, there appears an asymmetry between "slowly aging" and "fast aging" observers which can be used to have private communication transmission. We discuss some models for users inside gravitational wells and in the twin paradox scenario.