Deformed Boson Scheme in Time-Dependent Variational Method. I

Various aspects of the deformed boson scheme are investigated with aiming of applying to the time-dependent variational method for many-boson system. The case of the multiboson states is also discussed. In analogy with the time-dependent Hartree-Fock theory in many-fermion system, the classical aspect of the deformed boson is discussed.Comment: 15 pages, no figure, using PTPTeX.st

Two Contrastive Boson-Pair Coherent States in Deformed Boson Scheme

Two types of boson-pair coherent states, which were proposed independently by the present authors, are investigated. Main conclusion is as follows : Although the two states are superposed contrastively in terms of the boson-pairs, the expectation values of the boson-pair operators for these states are the same as one another with high accuracy.Comment: 8 pages, no figure, using PTPTeX styl

On the Multiboson Coherent State in Deformed Boson Scheme

The treatment for the multiboson coherent state is extended for the completeness of the formulation. The basic idea for the extension is presented in terms of expanding the boson space. The MYT boson mapping plays a central role. The resultant multiboson coherent state includes the state obtained in our previous treatment and the form suggests various multiboson coherent states are possible in the deformed boson scheme.Comment: 8 pages, no figure, using PTPTeX styl

Deformed Boson Scheme in Time-Dependent Variational Method. II

In this paper as a continuation of Part I, the case of two kinds of boson operators is treated. The deformation of the coherent states for the su(2)- and the su(1,1)-algebra and their related deformed algebras are discussed in various forms including the most popular form.Comment: 20 pages, no figure, using PTPTeX.st

X-ray diffraction imaging (topography) of electroopticcrystals by synchrotron radiation

Information of special interest to crystal growers and device physicists now available from monochromatic synchrotron diffraction imaging (topography) is reviewed. Illustrations are taken from a variety of electro-optic crystals. Aspects of the detailed understanding of crystal growth processes obtainable from carefully selected samples are described. Finally, new experimental opportunities now available for exploitation are indicated