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An axion ( / ˈæksiɒn /) is a hypothetical elementary particle originally theorized in 1978 independently by Frank Wilczek and Steven Weinberg as the Goldstone boson of Peccei–Quinn theory, which had been proposed in 1977 to solve the strong CP problem in quantum chromodynamics (QCD).
Feb 23, 2022 · The axion has emerged in recent years as a leading particle candidate to provide the mysterious dark matter in the cosmos, as we review here for a general scientific audience. We describe first the historical roots of the axion in the Standard Model of particle physics and the problem of charge-parity invariance of the strong nuclear force.
Sep 30, 2020 · Axions are hypothetical particles that were proposed to solve the strong charge–parity problem in high-energy physics. Although they have long been known in quantum field theory, axions have so...
The axion has emerged in recent years as a leading particle candidate to provide the mysterious dark matter in the cosmos, as we review here for a general scientific audience. We describe first the historical roots of the axion in the Standard Model of particle physics and the problem of charge-parity invariance of the strong nuclear force.
May 4, 2021 · We describe first the historical roots of the axion in the Standard Model of particle physics and the problem of charge-parity invariance of the strong nuclear force. We then discuss how the axion emerges as a dark matter candidate, and how it is produced in the early Universe.
Sep 15, 2021 · In these notes I try to introduce the reader to the topic of axions: their theoretical motivation and expected phenomenology, their role in astrophysics and as dark matter candidate, and the experimental techniques to detect them.
Axions are hypothetical elementary particles that, if they exist, would clean up a problematic exemption to a rule involving what's known as CP symmetry. As a bonus, their existence could also scrub out another perplexing mystery in science – the invisible added mass that helps galaxies cling together, known as dark matter.
A very light axion represents an excellent dark matter candidate. Pierre Sikivie’s article “The Pool-Table Analogy for Axion Physics” [1] presents an intuitive picture for how the axion arises in physics, and how we might be able to find it.
Feb 10, 2021 · In dark matter axion searches, quantum uncertainty manifests as a fundamental noise source, limiting the measurement of the quadrature observables used for detection.
Feb 23, 2022 · We describe first the historical roots of the axion in the Standard Model of particle physics and the problem of charge-parity invariance of the strong nuclear force. We then discuss how the axion emerges as a dark matter candidate and how it is produced in the early universe.
