322 research outputs found
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
Volume, Coulomb, and volume-symmetry coefficients of nucleus incompressibility in the relativistic mean field theory with the excluded volume effects
The relation among the volume coefficient (=incompressibility of the
nuclear matter), the Coulomb coefficient , and the volume-symmetry
coefficient of the nucleus incompressibility are studied in the
framework of the relativistic mean field theory with the excluded volume
effects of the nucleons, under the assumption of the scaling model. It is found
that MeV is necessary to account for the empirical values of ,
, and , simultaneously, as is in the case of the point-like
nucleons. The result is independent on the detail descriptions of the potential
of the -meson self-interaction and is almost independent on the
excluded volume of the nucleons.Comment: PACS numbers, 21.65.+f, 21.30.+
Compressional properties of nuclear matter in the relativistic mean field theory with the excluded volume effects
Compressional properties of nuclear matter are studied by using the mean
field theory with the excluded volume effects of the nucleons. It is found that
the excluded volume effects make it possible to fit the empirical data of the
Coulomb coefficient of nucleus incompressibility, even if the volume
coefficient is small(MeV). However, the symmetry properties favor
MeV as in the cases of the mean field theory of point-like
nucleons.Comment: PACS numbers, 21.65.+f, 21.30.+
Determination of QCD phase diagram from the imaginary chemical potential region
We test the reliability of the the Polyakov-loop extended Nambu-Jona-Lasinio
(PNJL) model, comparing the model result with the lattice data at nonzero
imaginary chemical potential. The PNJL model with the vector-type four-quark
and scalar-type eight-quark interactions reproduces the lattice data on the
pseudocritical temperatures of the deconfinement and chiral phase transitions.
The QCD phase diagram in the real chemical potential region is predicted by the
PNJL model. The critical endpoint survives, even if the vector-type four-quark
interaction is taken into account.Comment: 8 pages, 12 figure
Chiral phase transition in an extended NJL model with higher-order multi-quark interactions
The chiral phase transition is studied in an extended Nambu--Jona-Lasinio
model with eight-quark interactions. Equations for scalar and vector quark
densities, derived in the mean field approximation, are nonlinear and mutually
coupled. The scalar-type nonlinear term hastens the restoration of chiral
symmetry, while the scalar-vector mixing term makes the transition sharper. The
scalar-type nonlinear term shifts the critical endpoint toward the values
predicted by lattice QCD simulations and the QCD-like theory.Comment: 11pages, 7 figure
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