Results 261 to 270 of about 62,274 (300)
Some of the next articles are maybe not open access.

A mechanochemical theory of fluctuations in muscles

Biorheology, 1974
Equations of motions for the z-bands of a striated muscle in isometric tetanus arc written. The different kinds of forces acting on the z-bands arc considered and their properties discussed. Included arc the mechanochemical force, a damping force, and a spring force.
J L, Jackson, A, Oplatka
openaire   +2 more sources

On the Formalism of Thermodynamic Fluctuation Theory

Physical Review, 1951
From the statistical mechanical occupation probability of microstates Einstein has inferred a distribution function for the macroscopic states of a canonical ensemble. The conventional theory of thermodynamic fluctuations proceeds by making certain series expansions in the Einstein function and by dropping all cubic and higher order terms.
Greene, Richard F., Callen, Herbert B.
openaire   +2 more sources

Fluctuation Theory for the Ehrenfest urn

Advances in Applied Probability, 1991
The Ehrenfest urn model with d balls, or alternatively random walk on the unit cube in d dimensions, is considered in discrete and continuous time, together with related models.
openaire   +2 more sources

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
openaire   +2 more sources

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.
openaire   +2 more sources

The Theory of Fluctuations

2014
Thermodynamic systems at equilibrium are characterized by fluctuations that are a manifestation of their discrete nature at microscopic scales. We have already seen some examples of such fluctuations: those in the number of particle \(\Delta N\) in a certain volume \(V\) of a gas; the energy fluctuations in a system in contact with a heat bath.
openaire   +1 more source

A fluctuation theory of communications

Quantum Studies: Mathematics and Foundations, 2019
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Bhupendra Nath Tiwari, Prem K. Kalra
openaire   +2 more sources

Theory of fluctuations in a plasma

Annals of Physics, 1962
Abstract A theory of electron density fluctuations in a two-component plasma of electrons and positive ions is developed within the random phase approximation. A dielectric formulation is used extensively to describe the fluctuations; investigation of various examples clarifies such facets as collective vs. individual particle aspects of fluctuations.
openaire   +3 more sources

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
openaire   +1 more source

Theory of stress fluctuations

Physical Review E, 2000
The current status of the theory of stress fluctuations is marked by two circumstances: no currently available formulas are valid for a metallic system, and a series of contradictory formulas remains unresolved. Here we derive formulas for shear- and isotropic-stress energy fluctuations, in the primary statistical mechanics ensembles.
openaire   +2 more sources

Home - About - Disclaimer - Privacy