7 research outputs found
Generalization of Agranovich-Toshich transformation and constraint free bosonic representation for systems of truncated oscillators
The generalization of Agranovich-Toshich representation of paulion operators
in terms of bosonic ones for the case of truncated oscillators of higher ranks
is represented. We use this generalization to introduce a new constraint free
bosonic description of truncated oscillator systems. The corresponding
functional integral representations for thermodynamic quantities are given and
the application to investigations of Long Rang Order in the system is
discussed.Comment: latex, 8 pages, no figure
A Generalization of Haldane state-counting procedure and -deformations of statistics
We consider the generalization of Haldane's state-counting procedure to
describe all possible types of exclusion statistics which are linear in the
deformation parameter . The statistics are parametrized by elements of the
symmetric group of the particles in question. For several specific cases we
determine the form of the distribution functions which generalizes results
obtained by Wu. Using them we analyze the low-temperature behavior and
thermodynamic properties of these systems and compare our results with previous
studies of the thermodynamics of a gas of -ons. Various possible physical
applications of these constructions are discussed.Comment: 17 pages, latex, 6 figures small corrections were made, reference and
acknowledgments are adde
Dynamics of spin correlations in the spin-1/2 isotropic XY chain in a transverse field
Dynamic xx spin pair correlation functions for the isotropic spin-1/2 XY
chain are calculated numerically for long open chains in the presence of a
transverse magnetic field at finite temperature. As an application we discuss
the temperature dependence of the spin-spin relaxation time in PrCl_3.Comment: 2 pages, latex, 2 figures, abstract of the paper presented at Ampere
Summer School ``Applications of Magnetic Resonance in Novel Materials''
Nafplion, Greece, 3-9 September, 2000, partially published in J. Phys. A:
Math. Gen. 33, 3063 (2000