Quantum mechanics and the time travel paradox

TL;DR

This paper explores how quantum interference can enforce self-consistency in time travel loops, potentially preventing paradoxes by eliminating inconsistent loops through quantum amplitude interference.

Contribution

It proposes a quantum mechanical mechanism that ensures only self-consistent time travel loops can occur, addressing paradoxes in backward time travel.

Findings

Quantum interference enforces self-consistency in time travel loops

Inconsistent loops are eliminated via quantum amplitude interference

Potential universal mechanism for paradox prevention in time travel

Abstract

The closed causal chains arising from backward time travel do not lead to paradoxes if they are self consistent. This raises the question as to how physics ensures that only self-consistent loops are possible. We show that, for one particular case at least, the condition of self consistency is ensured by the interference of quantum mechanical amplitudes associated with the loop. If this can be applied to all loops then we have a mechanism by which inconsistent loops eliminate themselves.