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Condensed Matter papers — page 150

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Spread option and exchange option with stochastic interest rates
In this work, we consider the issue of pricing exchange options and spread options with stochastic interest rates. We provide the closed form solution for the exchange option price when interest rate…
Craig Liu, D. F. WangApr 8, 1999
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Magnetic and quadrupolar order in a one-dimensional ferromagnet with cubic crystal-field anisotropy
The zero temperature phase diagram of a one-dimensional S=2 Heisenberg ferromagnet with single-ion cubic anisotropy is studied numerically using the density-matrix renormalization group method.…
M. Dudzinski, G. Fath, J. SznajdApr 8, 1999
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Correlated scattering of photons from a trapped Bose-Einstein condensate
The second-order coherence of photons scattered from a trapped Bose-Einstein condensate is found to be enhanced for the scattering angles that are either the same or symmetrical with respect to the…
Hiroki Saito, Masahito UedaApr 8, 1999
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Stresses in silos: Comparison between theoretical models and new experiments
We present precise and reproducible mean pressure measurements at the bottom of a cylindrical granular column. If a constant overload is added, the pressure is linear in overload and nonmonotonic in…
L. Vanel, Ph. Claudin, J. -Ph. Bouchaud et al.Apr 7, 1999
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Quantum Statistical Mechanics for Nonextensive Systems II
In this paper, the Green function theory of quantum many-particle systems recently presented is reworked within the framework of nonextensive statistical mechanics with a new normalized…
E. K. Lenzi, R. S. Mendes, A. K. RajagopalApr 7, 1999
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A new quantum phase between the Fermi glass and the Wigner crystal in two dimensions
For intermediate Coulomb energy to Fermi energy ratios rs, spinless fermions in a random potential form a new quantum phase which is nor a Fermi glass, neither a Wigner crystal. Studying small…
Giuliano Benenti, Xavier Waintal, Jean-Louis PichardApr 7, 1999
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Momentum Distribution Spectroscopy Using Deep Inelastic Neutron Scattering
We show that deep inelastic neutron scattering from hydrogen(or other light nuclei) can be used to measure a spectrum of anharmonic contributions to the target atom momentum distribution with high…
G. F. Reiter, J. Mayers, J. NorelandApr 7, 1999
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Time-Dependent Ginzburg-Landau Theory and Duality
In the first part of this review paper, the time-dependent Ginzburg-Landau theory is derived starting from the microscopic BCS model with the help of a derivative expansion. Special attention is paid…
Adriaan M. J. SchakelApr 7, 1999
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Thermodynamics of boson and fermion systems with fractal distribution functions
Starting with the fractal inspired distribution functions for Maxwell-Boltzmann, Bose-Einstein and Fermi systems, as reported by F. Büyükkiliç and D. Demirhan, we obtain the corresponding probability…
Marcelo R. UbriacoApr 6, 1999
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3He and Universe parallelism
We discuss topological properties of the ground state of spatially homogeneous ensemble of fermions. There are several classes of topologically different fermionic vacua; in each case the momentum…
G. E. VolovikApr 5, 1999
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Making, probing and understanding Bose-Einstein condensates
Contribution to the proceedings of the 1998 Enrico Fermi summer school on Bose-Einstein condensation in Varenna, Italy.
W. Ketterle, D. S. Durfee, D. M. Stamper-KurnApr 2, 1999
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Direct Imaging of the First Order Spin Flop Transition in the Layered Manganite La1.4Sr1.6Mn2O7
Magnetic field induced transitions in the antiferromagnetic layered manganite La1.4Sr1.6Mn2O7 were studied using magnetization measurements and a high-resolution magneto-optical imaging technique. We…
U. Welp, A. Berger, D. J. Miller et al.Apr 2, 1999
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Elastic Rod Model of a Supercoiled DNA Molecule
We study the elastic behaviour of a supercoiled DNA molecule. The simplest model is that of a rod like chain, involving two elastic constants, the bending and the twist rigidities. We show that this…
Claude Bouchiat, Marc MezardApr 1, 1999
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Atom holography
We study the conditions under which atomic condensates can be used as a recording media and then suggest a reading scheme which allows to reconstruct an object with atomic reading beam. We show that…
O. Zobay, E. V. Goldstein, P. MeystreApr 1, 1999
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Transition Temperature of a Uniform Imperfect Bose Gas
We calculate the transition temperature of a uniform dilute Bose gas with repulsive interactions, using a known virial expansion of the equation of state. We find that the transition temperature is…
K HuangApr 1, 1999
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Dimer-Type Correlations and Band Crossings in Fibonacci Lattices
Fibonacci system with both diagonal and off-diagonal disorder is mapped to a model with dimer type 'defects'. The model exhibit resonance transition corresponding to zero reflectance…
Ignacio G. Cuesta, Indubala I. SatijaApr 1, 1999
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On the adiabatic properties of a stochastic adiabatic wall: Evolution, stationary non-equilibrium, and equilibrium states
The time evolution of the adiabatic piston problem and the consequences of its stochastic motion are investigated. The model is a one dimensional piston of mass M separating two ideal fluids made…
Ch. Gruber, L. FrachebourgApr 1, 1999
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Realistic model of correlated disorder and Anderson localization
A conducting 1D chain or 2D film inside (or on the surface of) an insulator is considered. Impurities displace the charges inside the insulator. This results in a long-range fluctuating electric…
V. V. Flambaum, V. V. SokolovApr 1, 1999
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Output coupling of a Bose-Einstein condensate formed in a TOP trap
Two distinct mechanisms are investigated for transferring a pure 87Rb Bose-Einstein condensate in the F = 2, mF = 2 state into a mixture of condensates in all the mF states within the F = 2 manifold.…
J. L. Martin, C. R. McKenzie, N. R. Thomas et al.Apr 1, 1999
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Recent Experiments with Bose-Condensed Gases at JILA
We consider a binary mixture of two overlapping Bose-Einstein condensates in two different hyperfine states of 87 with nearly identical magnetic moments. Such a system has been simply realized…
D. S. Hall, J. R. Ensher, D. S. Jin et al.Mar 31, 1999
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Lattice-dynamics of a Disordered solid-solid Interface
Generic properties of elastic phonon transport at a disordered interface are studied. The results show that phonon transmittance is a strong function of frequency and the disorder correlation length.…
G. Fagas, A. G. Kozorezov, C. J. Lambert et al.Mar 31, 1999
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Evidence for a Purely Double-Exchange Mechanism for the Anisotropic Conductivities in Layered La-Sr-Mn-O Single Crystals Below TC
Experimental evidence supports the double-exchange (DE) mechanism for both in-plane and c-axis conductivity in the colossal-magnetoresistive (CMR) layered manganite La1.4Sr1.6Mn2O7. Below TC, the…
Q. A. Li, K. E. Gray, J. F. Mitchell et al.Mar 31, 1999
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Diffusion of two repulsive particles in a one-dimensional lattice
The problem of the lattice diffusion of two particles coupled by a contact repulsive interaction is solved by finding analytical expressions of the two-body probability characteristic function. The…
Claude AslangulMar 31, 1999
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Two-component theory of a droplet of electrons in half-filled Landau level
We have investigated low energy excitations of a disk of electrons in half-filled Landau level using trail wave function and small-size exact diagonalization approaches. We have constructed a set of…
S. -R. Eric Yang, W. S. LyueMar 31, 1999
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Nonlocally-correlated disorder and delocalization in one dimension II: Localization length
In the previous paper (cond-mat/9809323), we calculated the density of staes in the random-mass Dirac fermion system. In this paper, we obtain the mean localization length of the single-fermion…
Ikuo Ichinose, Masaomi kimuraMar 31, 1999
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