Superradiance rules the day
نویسندگان
چکیده
منابع مشابه
Spin superradiance versus atomic superradiance
A comparative analysis is given of spin superradiance and atomic superradiance. Their similarities and distinctions are emphasized. It is shown that, despite a close analogy, these phenomena are fundamentally different. In atomic systems, superradiance is a self-organized process, in which both the initial cause, being spontaneous emission, as well as the collectivizing mechanism of their inter...
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Richard Saltman and Antonio Duran take up the challenging issue of governance in their article “Governance, Government and the Search for New Provider Models,” and use two case studies of health policy changes in Sweden and Spain to shed light on the subject. In this commentary, I seek to link their conceptualization of governance, especially its interrelated roles at the macro, meso, and micro...
متن کاملThe many faces of superradiance
Inertial motion superradiance, the emission of radiation by an initially unexcited system moving inertially but superluminally through a medium, has long been known. Rotational superradiance, the amplification of radiation by a rotating rigid object, was recognized much later, principally in connection with black hole radiances. Here we review the principles of inertial motion superradiance and...
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Vyacheslav I. Yukalov. b. 1946. M.Sc., 1970, Ph.D., 1974, Moscow, Dr.Hab., 1999, Poznan, Dr.Sci., 2001, Moscow. First involved with NMR related research in 1984, after starting his work at JINR in Dubna, where together with an experimental group he took part in the first observation of pure nuclear spin superradiance. Then developed a microscopic theory of this phenomenon. Received the First Pr...
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A well known description of superradiance from pointlike collections of many atoms involves the dissipative motion of a large spin. The pertinent \superradiance master equation" allows for a formally exact solution which we subject to a semiclassical evaluation. The clue is a saddle-point approximation for an inverse Laplace transform. All previous approximate treatments, disparate as they may ...
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ژورنال
عنوان ژورنال: Nature
سال: 1978
ISSN: 0028-0836,1476-4687
DOI: 10.1038/272742b0