The cluster-expansion approach is a technique in quantum mechanics that systematically truncates the BBGKY hierarchy problem that arises when quantum dynamics...

correlations, that can be treated systematically, e.g., with the cluster-expansion approach. At this level, one can explain and predict a wide range of effects...

inlining just a proper subset of the cluster leads to a worse performance than inlining nothing at all. Inline expansion itself is an optimization, since...

and Computational Approaches to the Electronic Structure of Molecules. p. 127. Nakatsuji, H.; Hirao, K. (1977). "Cluster expansion of the wavefunction...

published on 31 December 1946. Fokker–Planck equation Vlasov equation Cluster-expansion approach Harold Grad (1949). On the kinetic theory of rarefied gases. Communications...

therefrom can approach the age of the universe. Consequently, they can be used to measure not only the present-day expansion rate but also the expansion history...

Semiconductor luminescence equations Semiconductor Bloch equations Cluster-expansion approach Semiconductor laser theory Quantum beats Spin echo Stark effect...

{\displaystyle (J+K)} -particle correlations as defined with the cluster-expansion approach. Using the same second-quantization formalism for the matter being...

needed] Together with James Glimm and Arthur Jaffe he invented the cluster expansion approach to quantum field theory that is widely used in constructive field...

low density of superclusters means that they, unlike clusters, expand with the Hubble expansion. The number of superclusters in the observable universe...

systematically included by using various techniques such as the cluster-expansion approach. Both the SBEs and SLEs contain an identical homogeneous part...

}^{\dagger }P_{\mathbf {k} }\rangle } is constructed using the cluster-expansion approach. The quantity F ω {\displaystyle {\mathcal {F}}_{\omega }} contains...

A galaxy cluster, or a cluster of galaxies, is a structure that consists of anywhere from hundreds to thousands of galaxies that are bound together by...

be systematically truncated with different methods such as the cluster-expansion approach. At operator level, the microscopic polarization is defined by...

baryon acoustic oscillations, and in analyses of the clustering of galaxies. The accelerated expansion of the universe is thought to have begun since the...

A multipole expansion is a mathematical series representing a function that depends on angles—usually the two angles used in the spherical coordinate...

coworkers used supersonic expansion of an atomic cluster source into a vacuum in the presence of an inert gas and produced atomic cluster beams. Heer's team...

reach the Solar System and Earth since the beginning of the cosmological expansion. Assuming the universe is isotropic, the distance to the edge of the observable...

the potential cluster center and other points. This expansion allows the machine to work automatically. The machine identifies cluster centers and assigns...

that ultimately galaxy clusters, stars, planets, atoms, nuclei, and matter itself will be torn apart by the ever-increasing expansion in a so-called Big Rip...

immediate north and immediate south of the Manila cluster, respectively. The Metro Manila cluster would be formed by the existing NCR, plus nearby urban...

the still crated transmitter in storage. Over one year later, Daniel approached Sterling Sr. and asked about proceeding with the establishment of the...

electrons in galaxy clusters, in which the low-energy CMB photons receive an average energy boost during collision with the high-energy cluster electrons. Observed...

§ Derivation of the Hubble parameter). We currently appear to be approaching a period where the expansion of the universe is exponential due to the increasing dominance...

features a flat dashboard design with large screens for the instrument cluster and infotainment system, and a panoramic sunroof. Mitsubishi DST Concept...

Damara) (a dialect cluster including ǂAakhoe and Haiǁom) Eini (extinct) South Khoekhoe Korana (moribund) Xiri (moribund; a dialect cluster) Tshu–Khwe (or...

the expansion history of the universe by taking passively evolving early-type galaxies as "cosmic chronometers". From this point, this approach provides...

eligible voters in a community, creating a cluster of approximately 25 families and ensuring at least 80% of the cluster votes for representatives. The elected...

(1979). "A response-function approach to the direct calculation of the transition-energy in a multiple-cluster expansion formalism". Chemical Physics...

high temperature. The Typical Medium Dynamical Cluster Approximation (TMDCA) is a non-perturbative approach for obtaining the electronic ground state of...