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Causality Rules (Second Edition): Dispersion theory in non-elementary particle physics

Causality Rules (Second Edition): Dispersion theory in non-elementary particle physics

Hardcover

Series: Iop eBooks

Physics

ISBN10: 0750334290
ISBN13: 9780750334297
Publisher: Institute of Physics Publishing
Published: Apr 24 2024
Pages: 140
Weight: 0.97
Height: 0.38 Width: 7.00 Depth: 10.00
Language: English

Causality: Cause and effect. In classical physics, an effect cannot occur before its cause. In Einstein's theory of special relativity, causality means that an effect cannot occur from a cause that is not in the back (past) light cone of that event.

The books cover the useful physical relations inferred by unitarity and causality. A famous example is the Kramers-Kronig relation for the refractive index of a gas or dilute medium. For example, in Chapter 3 generalises the Kramers-Kronig relation to relativistic medium, such as CMB (photon gas). These relations are extensively also used in particle and nuclear physics. Especially useful are the so-called sum rules, such as the Gerasimov-Drell-Hearn (GDH) or the Baldin sum rule.

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