The dynamical behavior of the one-dimensional quantum sine-Gordon system with a misfit parameter is investigated at a particular value of the quantum parameterg2=4π. For this purpose the dynamical correlation functio...
The dynamical behavior of the one-dimensional quantum sine-Gordon system with a misfit parameter is investigated at a particular value of the quantum parameterg2=4π. For this purpose the dynamical correlation functions are calculated by using the Fermi-Bose relation. From the behavior of the displacement correlation function we find that the thermal velocity is given by ∼√T/m0in the commensurate state (m0-| µ 8730|≫T) or in the cross-over region (m0≃| µ \tilde |≫T) and approaches value 1 asTor | µ \tilde | is increased. Herem0and µ \tilde, respectively, are the gap and the chemical potential in the corresponding fermion system. For the case of denity-density correlation function, we give in the commensurate state expressions which are similar to those derived on the basis of the soliton phenomenology in the classical system. A particular case of the density-density correlation function is discussed in detail by following another route.
With the help of a suitable example we demonstrate the importance of the choice of the dynamical algebra in finding the invariants of time-dependent hamiltonians. Several cases of time-dependent oscillators are discus...
With the help of a suitable example we demonstrate the importance of the choice of the dynamical algebra in finding the invariants of time-dependent hamiltonians. Several cases of time-dependent oscillators are discussed briefly illustrating the algebraic method of finding the invariants.
It is shown that the plasma parameter obtained by fitting the presently available one-component-plasma structure factors to the real structure factors of the alkali liquids cannot be reasonably reproduced by existing ...
It is shown that the plasma parameter obtained by fitting the presently available one-component-plasma structure factors to the real structure factors of the alkali liquids cannot be reasonably reproduced by existing variational thermodynamic calculations, even using a very accurate pseudopotential theory. The implications of this discrepancy are discussed.
Raman and far-infrared spectra of crystalline fluoroform at temperatures between 20 and 106 K have been recorded. There is no evidence for any solid-state phase transitions, nor for hydrogen bonding. The rich lattice ...
Raman and far-infrared spectra of crystalline fluoroform at temperatures between 20 and 106 K have been recorded. There is no evidence for any solid-state phase transitions, nor for hydrogen bonding. The rich lattice spectra and crystal field splittings suggest that the unit cell is rather large, and possible structures are discussed.
The dynamical correlation functions for the 1-D quantum sine-Gordon system withg2=4π are investigated analytically (g2is the quantum parameter). Following a microscopic approach using the fermibose relation, general ...
The dynamical correlation functions for the 1-D quantum sine-Gordon system withg2=4π are investigated analytically (g2is the quantum parameter). Following a microscopic approach using the fermibose relation, general expressions valid at all temperatures are derived. The high and low temperature limits of the correlation functions are given explicitly.
作者：
Escudero, RobertoSmith, H.J.T.Univ of Waterloo
Guelph-Waterloo Program for Graduate Studies in Physics Waterloo Ont Can Univ of Waterloo Guelph-Waterloo Program for Graduate Studies in Physics Waterloo Ont Can
In this paper the authors report an experimental observation of energy gap enhancement in tin. Because the energy gap does not appear directly in the I-V characteristic of a microbridge, they have measured the subharm...
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ISBN:
(纸本)0444869107
In this paper the authors report an experimental observation of energy gap enhancement in tin. Because the energy gap does not appear directly in the I-V characteristic of a microbridge, they have measured the subharmonic gap structure, which is readily observed in the I-V characteristic and from this data they have estimated the energy gap. The microbridges were prepared by a new technique. The data is compared to the predictions of the Eliashberg theory.
The Scanning Laser Microscope at the University of waterloo is described, with experimental results from the areas of semiconductor characterization and device testing. Minority carrier diffusion length measurements u...
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The Scanning Laser Microscope at the University of waterloo is described, with experimental results from the areas of semiconductor characterization and device testing. Minority carrier diffusion length measurements using two different experimental geometries are described and compared with scanning electron microscope EBIC measurements. Both minority carrier diffusion length and surface recombination velocity measurements in polycrystalline semiconductors are reported from measurement of spatially-resolved photoconductivity along the length of a polycrystalline sample.
It is pointed out that, due to the neglect of the natural line width of internal-conversion lines used for determining the instrumental resolution, the experiment of Lubimov et al does not determine a model-independen...
It is pointed out that, due to the neglect of the natural line width of internal-conversion lines used for determining the instrumental resolution, the experiment of Lubimov et al does not determine a model-independent lower bound for the neutrino mass.
The relative transition probabilities Kβ3Kβ1, Kβ2Kβ1, KO23Kβ1, KP23Kβ1, Kβ5Kβ1, and Kβ4Kβ1 are measured by Ge spectroscopy for the atoms having Z=70, 78, 82, and 92. In contrast to previous data, the results...
The relative transition probabilities Kβ3Kβ1, Kβ2Kβ1, KO23Kβ1, KP23Kβ1, Kβ5Kβ1, and Kβ4Kβ1 are measured by Ge spectroscopy for the atoms having Z=70, 78, 82, and 92. In contrast to previous data, the results exhibit smooth Z dependences and agree closely with Scofield's relativistic Hartree-Fock calculations. A tentative observation of the KM1 transition is reported.
The Coster-Kronig probability f23 for lead has been measured by a K-x-ray—L-x-ray coincidence technique. Analytic fitting of the Kα-x-ray triplet using nonlinear least-squares methodology was employed to determine t...
The Coster-Kronig probability f23 for lead has been measured by a K-x-ray—L-x-ray coincidence technique. Analytic fitting of the Kα-x-ray triplet using nonlinear least-squares methodology was employed to determine the corrections necessitated by the overlap of the Kα2 and Kα1 peaks. The result, 0.112±0.002, is to be compared with the Dirac-Hartree-Slater prediction of 0.122 and a recently measured value of 0.130±0.002 obtained by a different approach to the overlap correction. The present result may provide an estimate of relaxation and many-body effects, which—if included—would lower the Dirac-Hartree-Slater single-particle-model prediction.
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