On the Kirkwood Superposition Approximation
نویسندگان
چکیده
منابع مشابه
Maximum entropy formulation of the Kirkwood superposition approximation.
Using a variational formulation, we derive the Kirkwood superposition approximation for systems at equilibrium in the thermodynamic limit. We define the entropy of the triplet correlation function and show that the Kirkwood closure brings the entropy to its maximal value. This approach leads to a different interpretation for the Kirkwood closure relation, usually explained by probabilistic cons...
متن کاملCommunication: Nonexistence of a critical point within the Kirkwood superposition approximation.
An analytic argument is given to show that the application of the Kirkwood superposition approximation to the description of fluid correlation functions precludes the existence of a critical point. The argument holds irrespective of the dimension of the system and the specific form of the interaction potential and settles a long-standing controversy surrounding the nature of the critical behavi...
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We propose a scheme to generate superpositions of coherent states for the vibrational motion of a laser cooled trapped-ion. It is based on the interaction with a standing wave making use of the counter-rotating terms, i.e. not applying the rotating wave approximation. We also show that the same scheme can be exploited for quantum state measurement, i.e. with the same scheme non-classical states...
متن کاملTom Kirkwood
Tom Kirkwood is Professor of Medicine and Director of the Institute for Ageing and Health at Newcastle University, UK. After training in mathematics and biology at the Universities of Cambridge and Oxford he first worked on the measurement of blood clotting and fibrinolytic factors. Early in his career he began an interest in the biology of ageing which he has followed since 1975. In 1977 he pu...
متن کاملOn the validity of the kirkwood-riseman theory.
The theory of transport processes in polymer solutions, including hydrodynamic interaction between segments of the polymer chain, has been developed extensively along lines originally indicated by Kirkwood and Riseman. 1 2 They applied the Oseen approximation3 4 to the "pearl necklace" model of a polymer. That approximation is equivalent to the assumption that each monomer is a point source of ...
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ژورنال
عنوان ژورنال: Progress of Theoretical Physics
سال: 1959
ISSN: 0033-068X
DOI: 10.1143/ptp.21.421