English

How Real is Incomputability in Physics?

Quantum Physics 2024-06-24 v2 Computational Complexity

Abstract

A physical system is determined by a finite set of initial conditions and "laws" represented by equations. The system is computable if we can solve the equations in all instances using a "finite body of mathematical knowledge". In this case, if the laws of the system can be coded into a computer program, then given the initial conditions of the system, one can compute the system's evolution. Are there incomputable physical systems? This question has been theoretically studied in the last 30-40 years. In this paper, we experimentally show for the first time the strong incomputability of a quantum experiment, namely the outputs of a quantum random number generator. Moreover, the experimental results are robust and statistically significant.

Keywords

Cite

@article{arxiv.2311.00908,
  title  = {How Real is Incomputability in Physics?},
  author = {José Manuel Agüero Trejo and Cristian S. Calude and Michael J. Dinneen and Arkady Fedorov and Anatoly Kulikov and Rohit Navarathna and Karl Svozil},
  journal= {arXiv preprint arXiv:2311.00908},
  year   = {2024}
}

Comments

20 pages, 3 figures, 2 tables, final submitted version

R2 v1 2026-06-28T13:09:10.204Z