Quantum observer and Kolmogorov complexity: a model that can be tested

Abstract

Different observers do not have to agree on how they identify a quantum system. We explore a condition based on algorithmic complexity that allows a system to be described as an objective "element of reality". We also suggest an experimental test of the hypothesis that any system, even much smaller than a human being, can be a quantum mechanical observer.Comment: 11 pages. Section 6 on experimental tests added in version