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Holes parts

An equivalent A-order equation having the same structure for the particle part and for the holes part (in a similar way as in (43)), may also be inferred. This equation has the form ... [Pg.70]

By identifying the holes part ofthe l.h.s. of this relation with the holes part ofthe r.h.s. and similarly for the electrons, Valdemoro, Colmenero and Perez del Valle [5-7] built up a p-RDM in terms ofthe lower order RDM s. This construction procedure will be referred to in what follows as VCP and denoted in the formulae as D. Since the value of the norm of the VCP matrix was very close - but not exactly equal - to ( ), different procedures of renormalization were proposed [8,9,12]. This step should not be under-... [Pg.4]

This equation expresses an antisymmetrized product of two Kronecker deltas in terms of RDMS and HRDMs. By combining it with the expression of the simple Kronecker delta previously used (Eq. (14)), one can replace the antisymmetrized products of three/four Kronecker deltas, which appear when taking the expectation values of the anticommutator/commutator of three/four annrhrlators with three/four creator operators. With the help of the symbolic system Mathematica [55], and by separating as in the VCP approach the particles from the holes part, one obtains... [Pg.137]

The physical sense of the electron and hole parts of Green s function in expression (21) is quite obvious. Green s function G(f,f E) is the propagator of the electron motion from point f near the donor to point r near the... [Pg.45]

For the sake of brevity, only the hole parts of the 2h-1 p configurations are shown. [Pg.640]

The optical properties of an exciton bound to a neutral donor or acceptor depend on the interaction of the exciton constituents with the neutral entity. When, for instance, the hole part interacts more strongly than the electron part with the neutral atom, the binding between the two exciton components decreases and the electron part can be considered as an electron bound to a pseudo-negative ion, forming some kind of pseudo-acceptor. [Pg.15]

In semiconductors containing isoelectronic centres with an attracting potential for electrons or holes mentioned in Sect. 1.3.2, free excitons can be trapped because of the preferential interaction of these centres with the electron (or hole) part of the exciton. The hole (resp. electron) part of the exciton is then comparable to a hole (resp. electron) bound to a neg-... [Pg.15]

Radiant energy incident on a partition with holes partly escapes the partition and is partly absorbed by and reflected from the partition. Accordingly, the analogous electrical circuit, including the energy that escapes the partition, may be constructed as shown in Fig. 9.25. [Pg.451]

The particle-hole part n s, s,(o)) and the hole-particle part II f,.,(w) of the well-known polarisation propagator [11] are defined by... [Pg.93]

The almost endless possibilities of mass spectrometry have been increased by yet another hopeful variant SELDI (surface-enhanced laser desorption ionization). SELDI combines protein chips with a UV-MALDl-TOF. The chips are solid aluminum strips coated with cationic or anionic ion exchangers, with hydrophile or hydrophobic molecules. Chips with activated surfaces are also available. These bind proteins covalently via their amino groups and enable you to coat chips with antibodies or receptors as you need them. Every chip has eight coated holes with a diameter of 1 mm. You apply the sample into the holes. Part of the pro-teins/peptides is adsorbed. The remainder is washed off. The adsorbed proteins/peptides are transferred into matrix and can then be analyzed in the mass spectrometer (Figure 7.8). What can SELDI do better than MALDI ... [Pg.174]

The combined probability for removing a particle with quantum numbers a from the ground state while leaving the remaining A — 1-system at an energy E = Eq — co corresponds to the experimental results shown in Fig. 1. Theoretically, it is referred to as the hole part of the spectral function which is related to the sp propagator by... [Pg.123]

As the name imphes, this package type contains surface-mount parts on both sides, as well as through-hole parts such as connectors. In most cases, the surface-moimt components on one... [Pg.292]

Addition of Solder through Pre-Forms. Solder foil pre-forms (stamped solder foil) can be added to through-hole parts to augment solder volume (see Fig. 47.20). This approach is expensive and apphcation of the pre-forms is tedious and time-consuming. [Pg.1099]

Neither the pair density nor its hole part are explicitly available within DFT. The practical approach is to construct them from Kohn-Sham orbitals and their occupations implying formula for e.g. a one-determinantal ansatz. [Pg.54]

REINRED prioritizes features and redesign requests. The priorities are symbolic and belong to the ordered set (A-MUST, VERY-IMPORTANT, IMPORTANT, LESS-IMPORTANT, A-WISH). The priority of a feature can be computed from the functional requirements of this feature in relationship with the functionality of the v/hole part. For example, if a hole is used to secure a screw, the threads in this hole are prioritized as A-MUST. The functionality of a feature can be deduced from the explanations attached to old redesign requests. Prioritizing redesign requests is based on the priority of the analogous redesign requests in the old cases. [Pg.223]


See other pages where Holes parts is mentioned: [Pg.1375]    [Pg.70]    [Pg.218]    [Pg.56]    [Pg.46]    [Pg.268]    [Pg.415]    [Pg.130]    [Pg.190]    [Pg.164]    [Pg.26]    [Pg.867]    [Pg.1302]    [Pg.1310]    [Pg.113]    [Pg.292]    [Pg.293]    [Pg.930]    [Pg.980]    [Pg.1335]    [Pg.217]    [Pg.57]    [Pg.3581]    [Pg.47]    [Pg.47]    [Pg.371]   


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Electron hole parts

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