Hilbert's sixth problem


Hilbert's sixth problem is to axiomatize those branches of physics in which mathematics is prevalent. It occurs on the widely cited list of Hilbert's problems in mathematics that he presented in the year 1900. In its common English translation, the explicit statement reads:
Hilbert gave the further explanation of this problem and its possible specific forms:

History

himself devoted much of his research to the sixth problem; in particular, he worked in those fields of physics that arose after he stated the problem.
In the 1910s, celestial mechanics evolved into general relativity. Hilbert and Emmy Noether corresponded extensively with Albert Einstein on the formulation of the theory.
In the 1920s, mechanics of microscopic systems evolved into quantum mechanics. Hilbert, with the assistance of John von Neumann, L. Nordheim, and E. P. Wigner, worked on the axiomatic basis of quantum mechanics. At the same time, but independently, Dirac formulated quantum mechanics in a way that is close to an axiomatic system, as did Hermann Weyl with the assistance of Erwin Schrödinger.
In the 1930s, probability theory was put on an axiomatic basis by Andrey Kolmogorov, using measure theory.
Since the 1960s, following the work of Arthur Wightman and Rudolf Haag, modern quantum field theory can also be considered close to an axiomatic description.
In the 1990s-2000s the problem of "the limiting processes, there merely indicated, which lead from the atomistic view to the laws of motion of continua" was approached by many groups of mathematicians. Main recent results are summarized by Laure Saint-Raymond, Marshall Slemrod, Alexander N. Gorban and Ilya Karlin.

Status

Hilbert’s sixth problem was a proposal to expand the axiomatic method outside the existing mathematical disciplines, to physics and beyond. This expansion requires development of semantics of physics with formal analysis of the notion of physical reality that should be done. Two fundamental theories capture the majority of the fundamental phenomena of physics:
Hilbert considered general relativity as an essential part of the foundation of physics. However, quantum field theory is not logically consistent with general relativity, indicating the need for a still-unknown theory of quantum gravity. Hilbert's sixth problem thus remains open.