Results 261 to 270 of about 7,300,790 (323)

Fluctuation Theory of Liquids

High Temperature, 2018
A fluctuation theory is proposed in which both the regular region of the phase diagram and the region in the vicinity of the critical point are described based on the same assumptions. It was shown that the critical indices could be determined more precisely within the fluctuation theory than by the scaling concept; the critical point affects almost ...
G. Martynov
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Ballistic macroscopic fluctuation theory of correlations in hard-rod gas

Journal of Statistical Mechanics: Theory and Experiment
Recently, a theoretical framework known as ballistic macroscopic fluctuation theory has been developed to study large-scale fluctuations and correlations in many-body systems exhibiting ballistic transport.
Anupam Kundu
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Theory of Fluctuations in Superconductors

2005
Abstract This book presents itself as both an encyclopedia and a textbook of fluctuation phenomena in superconductors. The first half presents the phenomenological methods of the Ginzburg-Landau theory and microscopical methods of the quantum field theory in the description of fluctuations. The second half provides a wide panorama of the
Anatoly Larkin, Andrey Varlamov
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Fluctuation Theory of Solutions : Applications in Chemistry, Chemical Engineering, and Biophysics

, 2013
Paul A. Smith, E. Matteoli, J. Connell
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Theory of Fluctuations in Pseudointegrable Systems

Physical Review Letters, 1993
We provide a sum rule for the length spectrum of pseudointegrable systems in terms of the quantal energies. Further, we derive an expression for the form factor and infer the dependence of spectral fluctuations on the geometry of the system. Our analysis allows us to explain various numerical results obtained in recent years.
, Biswas, , Sinha
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Fluctuation theory in quantum-optical systems

Physical Review A, 1982
We make some pertinent comments on previous work on the adiabatic elimination in quantum optical systems.
, Casagrande, , Eschenazi, , Lugiato
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Hydrodynamic fluctuation theories

Journal of Mathematical Physics, 1978
Incompatible theories for hydrodynamic fluctuations far from full equilibrium are described and compared. The two types of approach are compared with the well established near equilibrium theory of hydrodynamic fluctuations. They are also checked for internal consistency and it is shown that one of the approaches checks out as inconsistent.
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Quantum fluctuation theory

Physics Letters A, 1969
Abstract The incorporation of quantum fluctuations into the calculations of fluctuations in a neutral system is given. The particular application considered is for superfluids. A suggestive gauge invariant formalism is presented and motivated.
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Nonequilibrium Theory of Fluid Fluctuations

The Physics of Fluids, 1970
A generalization of previously existing theories of fluctuations in dilute monotonic gases is obtained which describes nonequilibrium states with spatial gradients. A kinetic description of the fluctuations is first derived, and the reduction to the fluid limit is then carried out.
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Quantum Theory of Fluctuations

Physical Review, 1955
An operator is constructed for the spectral density of a fluctuating dynamical variable. The formulation is based on an analysis of method of measurement. An essential feature of the operator is the replacement of classical dynamical variables by time-dependent Heisenberg operators. The expectation value of the spectral density includes fluctuations of
Hans Ekstein, Norman Rostoker
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