Physics – Nuclear Physics – Nuclear Theory
Scientific paper
1998-04-11
ActaPhys.Polon.B29:1839-1884,1998
Physics
Nuclear Physics
Nuclear Theory
35 pages, RevTex, 16 uuencoded eps figs., Lectures given at the XXXVII Zakopane School, June 1997. To be published in Acta Phy
Scientific paper
In the 1950's Hanbury Brown and Twiss showed that one could measure the angular sizes of astronomical radio sources and stars from correlations of signal intensities, rather than amplitudes, in independent detectors. Their subsequent correlation experiments demonstrating quantum bunching of photons in incoherent light beams were seminal in the development of quantum optics. Since that time the technique of "intensity interferometry" has become a valuable probe of high energy nuclear and particle collisions, providing information on the space-time geometry of the collision. The effect is one of the few measurements in elementary particle detection that depends on the wave mechanics of the produced particles. Here we discuss the basic physics of intensity interferometry, and its current applications in high energy nuclear physics, as well as recent applications in condensed matter and atomic physics.
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