1,015 research outputs found
Finite Temperature QCD on Anisotropic Lattices
We present results for mesonic propagators in temporal and spatial direction
and for topological properties at T below and above the deconfining transition
in quenched QCD. We use anisotropic lattices and Wilson fermions.Comment: 6 pages, 7 figures, Talk given at 16th International Symposium on
Lattice Field Theory (LATTICE 98(hightemp)) , Boulder, CO, 13-18 Jul 1998.
(Replaced: Fig.4 corrected, further minor modifications in legends and text.
Are Americans more Altruistic than the Japanese Comparison of Saving and Bequest Motives.
In this paper, we analyze a variety of data on saving motives, bequest motives, and bequest division from the "Comparative Survey of Savings in Japan and the United States", a binational survey conducted in 1996 by the Institute for Posts and Telecommunications Policy of the Ministry of Posts and Telecommunications of the Government of Japan, in order to shed light on which model of household behavior applies in the two countries.HOUSEHOLD ; SAVINGS ; CONSUMPTION
Onsager-Machlup action-based path sampling and its combination with replica exchange for diffusive and multiple pathways
For sampling multiple pathways in a rugged energy landscape, we propose a
novel action-based path sampling method using the Onsager-Machlup action
functional. Inspired by the Fourier-path integral simulation of a quantum
mechanical system, a path in Cartesian space is transformed into that in
Fourier space, and an overdamped Langevin equation is derived for the Fourier
components to achieve a canonical ensemble of the path at a finite temperature.
To avoid "path trapping" around an initially guessed path, the path sampling
method is further combined with a powerful sampling technique, the replica
exchange method. The principle and algorithm of our method is numerically
demonstrated for a model two-dimensional system with a bifurcated potential
landscape. The results are compared with those of conventional transition path
sampling and the equilibrium theory, and the error due to path discretization
is also discussed.Comment: 20 pages, 5 figures, submitted to J. Chem. Phy
Bosonic D-branes at finite temperature with an external field
Bosonic boundary states at finite temperature are constructed as solutions of
boundary conditions at for bosonic open strings with a constant gauge
field coupled to the boundary. The construction is done in the
framework of thermo field dynamics where a thermal Bogoliubov transformation
maps states and operators to finite temperature. Boundary states are given in
terms of states from the direct product space between the Fock space of the
closed string and another identical copy of it. By analogy with zero
temperature, the boundary states heve the interpretation of -brane at
finite temperature. The boundary conditions admit two different solutions. The
entropy of the closed string in a -brane state is computed and analysed. It
is interpreted as the entropy of the -brane at finite temperature.Comment: 21 pages, Latex, revised version with minor corrections and
references added, to be published in Phys. Rev.
Speech Communication
Contains reports on four research projects.U. S. Air Force (Air Force Cambridge Research Center, Air Research and Development Command) under Contract AF19(604)-6102National Science Foundatio
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