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The following is a list of notable unsolved problems grouped into broad areas of physics. Some of the major unsolved problems in physics are theoretical, meaning that existing theories seem incapable of explaining a certain observed phenomenon or experimental result.
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.
Pages in category "Unsolved problems in geometry". The following 47 pages are in this category, out of 47 total. This list may not reflect recent changes .
30 sie 2017 · Five of the most important and interestingly unsolved problems in theoretical physics in the quantum regime (in the small) and in cosmology (in the large) are commonly agreed to be the following (see, for example, ): Ph1 The problem of quantum gravity. Ph2 The foundational problems of quantum mechanics. Ph3 The unification of particles and forces.
10 cze 2021 · Two-dimensional quantum field theories are often useful for describing the behavior of materials, like insulators; six-dimensional quantum field theories are especially relevant to string theory; and four-dimensional quantum field theories describe physics in our actual four-dimensional universe.
Mathematicians and non-mathematicians alike have long been fascinated by geometrical problems, particularly those that are intuitive in the sense of being easy to state, perhaps with the aid of a simple diagram. Each section in the book describes a problem or a group of related problems.
Problems: construct a quantum theory of gravity from some basic principles assuming noncommutative geometry (John Madore, ...) or express some sector or limit of an underlying theory in terms of the language of noncommutative geometry
