Results 251 to 260 of about 855,445 (292)

Mathematical modeling of planar cell polarity: principles, approaches, and open questions. [PDF]

NPJ Syst Biol Appl
Rizvi MS, Jolly MK.
europepmc   +1 more source

Experimental Study on Laser-Controlled Explosive Welding of Microscale Metallic Foils Driven by Energetic Materials. [PDF]

Materials (Basel)
Ye X, Ye D, Fu Y, Zhao P, Xiao X, Shi D, Zhang R.   +6 more
europepmc   +1 more source

Dynamic Electrophoresis of an Oil Drop. [PDF]

Micromachines (Basel)
Ohshima H.
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Molecular simulation of pore size effect on CH₄ adsorption characteristics in anthracite. [PDF]

Sci Rep
Bai Y, Yang L, Hu B, Long H, Zhang Y, Li A, Geng B.   +6 more
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A Perturbation Model of Gradient Energy Anisotropy for Phase-Field Simulation of Ferroelectrics. [PDF]

Materials (Basel)
Shi X, Liu J, Xu K, Wang H, Wang Z, Wang N, Huang H, Liu Z.   +7 more
europepmc   +1 more source

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Non-equilibrium quantum field theory and perturbation theory

Nuclear Physics A, 1995
Abstract The perturbation theory is studied for a non-equilibrium situation of an interacting fermion-boson system. The structure of the Green function expansion is represented in the Keldysh-Schwinger formalism. A non-equilibrium Wick theorem is derived by expressing the expectation values of normal-ordered products, which do not vanish in non ...
R. Fauser, H.H. Wolter
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Mean field theory for non-equilibrium quantum fields

Physica A: Statistical Mechanics and its Applications, 1989
Abstract An approximation technique is provided for studying the time development out of equilibrium of thermal quantum fields, when they experience isoentropic but energy-non-conserving evolution. We implement approximately a variational principle that yields the Liouville-von Neumann equation when implemented exactly.
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$����^{4}$ non equilibrium dynamics and kinetic field theory

1995
Off-shellness and inhomogeneities are in the non-equilibrium dynamics of the lambda phi^4 model are studied using the closed timepath formalism reformulated as kinetic field theory. We take into account initial correlations up to the 4-point functions. The model is shown to exhibit a SO(1,1) symmetry broken by interactions and initial conditions.
Witte, F. M. C., Klevansky, S. P.
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