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排序方式: 共有186条查询结果,搜索用时 15 毫秒
141.
142.
Although patents are an important source for information on microorganisms, a survey disclosed that catalogs from culture collection depositories are unreliable in relating the availability with the microorganisms disclosed in a patent. 相似文献
143.
144.
Horodecki M Horodecki K Horodecki P Horodecki R Oppenheim J Sen De A Sen U 《Physical review letters》2003,90(10):100402
A new paradigm for distributed quantum systems where information is a valuable resource is developed. After finding a unique measure for information, we construct a scheme for its manipulation in analogy with entanglement theory. In this scheme, instead of maximally entangled states, two parties distill local states. We show that, surprisingly, the main tools of entanglement theory are general enough to work in this opposite scheme. Up to plausible assumptions, we show that the amount of information that must be lost during the protocol of concentration of local information can be expressed as the relative entropy distance from some special set of states. 相似文献
145.
A kinetic theory of resonant interaction between electrostatic waves and the bounce motion of electrostatically trapped electrons is developed. Precise criteria are derived for the stability of electrostatic potential structures which trap electrons in a highly magnetized plasma. The theory explains the energy transfer from electron phase space holes to waves observed in simulations. It may also account for the destabilization of electrostatic waves propagating obliquely to the geomagnetic field and some characteristics of the holes as observed in the auroral ionosphere. 相似文献
146.
The Mori formalism is used to study generalized transport coefficients in two dimensions. All finite multilinear products of the single particle density and momentum density comprise the set of the variables in the calculation of the self-diffusion coefficient. A self-consistent equation, which is a non-linear integral equation, is obtained for the leading asymptotic behavior of the generalized self-diffusion coefficient. An asymptotic solution is presented which for small wavevector (k) and frequency (s) behaves like , where D has the dimensions of a diffusion coefficient. The mean square and mean fourth displacements of a tagged particle are also calculated. The long time behavior of the momentum correlation function exhibits a tail of the form whose coefficient is dependent of the intermolecular potential. 相似文献
147.
Irwin Oppenheim 《Journal of statistical physics》1995,78(3-4):1181-1181
148.
Miguel Octavio Sonia Frota-Pessoa Ivette F. Oppenheim James A. Blackburn 《Physics letters. A》1981,82(7):365-368
We provide theoretical justification within the framework of the generalized TDGL equations for the observation of a delay time when a current pulse is applied to a superconducting microbridge. Predictions are made as to the dependences of the delay time on current, microbridge length and relaxation times. 相似文献
149.
150.
The relaxation properties of a small classical system weakly coupled to a large classical system which acts as a heat bath are described using a generalized Fokker-Planck equation. The Fokker-Planck equation is derived in general using a modification of the elimination of fast variables techniques previously described. The specific example in which the small system is a harmonic oscillator linearly coupled to the heat bath is treated in detail and it is demonstrated that there is a dynamic frequency shift as well as a statistical shift of the oscillator frequency. 相似文献