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Showing 1996Show all

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astro-ph1996★ 1 cited

An Investigation of Neutrino-Driven Convection and the Core Collapse Supernova Mechanism Using Multigroup Neutrino Transport

A. Mezzacappa, A. C. Calder, S. W. Bruenn +4

We investigate neutrino-driven convection in core collapse supernovae and its ramifications for the explosion mechanism. We begin with an ``optimistic'' 15 solar mass precollapse m…

hep-ph1996★ 59 cited

On the Dirac Structure of Confinement

Adam P. Szczepaniak, Eric S. Swanson

The Dirac structure of confinement is shown to be of timelike-vector nature in the heavy quark limit of QCD. This stands in contradiction with the phenomenological success of the D…

astro-ph1996★ 74 cited

Acceleration of Solar Wind Ions by Nearby Interplanetary Shocks: Comparison of Monte Carlo Simulations with Ulysses Observations

Matthew G. Baring, Keith Ogilvie, Donald Ellison +1

The most stringent test of theoretical models of the first-order Fermi mechanism at collisionless astrophysical shocks is a comparison of the theoretical predictions with observati…

hep-ph1996★ 39 cited

From Current to Constituent Quarks: a Renormalization Group Improved Hamiltonian-based Description of Hadrons

A. P. Szczepaniak, E. S. Swanson

A model which combines the perturbative behavior of QCD with low energy phenomenology in a unified framework is developed. This is achieved by applying a similarity transformation…

astro-ph1996★ 119 cited

Non-linear Particle Acceleration in Oblique Shocks

Donald C. Ellison, Matthew G. Baring, Frank C. Jones

We have developed a Monte Carlo technique for self-consistently calculating the hydrodynamic structure of oblique, steady-state shocks, together with the first-order Fermi accelera…

gr-qc1996★ 80 cited

Energy of Isolated Systems at Retarded Times as the Null Limit of Quasilocal Energy

J. D. Brown, S. R. Lau, J. W. York

We define the energy of a perfectly isolated system at a given retarded time as the suitable null limit of the quasilocal energy . The result coincides with the Bondi-Sachs mass…

hep-ph1996★ 275 cited

Higher Quarkonia

T. Barnes, F. E. Close, P. R. Page +1

We discriminate gluonic hadrons from conventional states by surveying radial and orbital excitations of all I=0 and I=1 systems anticipated up to 2.1 GeV. We gi…

nucl-ex1996★ 4 cited

Measurements of the Total Cross Section for the Scattering of Polarized Neutrons from Polarized He

C. D. Keith, C. R. Gould, D. G. Haase +5

Measurements of polarized neutron--polarized He scattering are reported. The target consisted of cryogenically-polarized solid He, thickness 0.04 atom/b and polarization 40…

math.PR1996

Hypercontractivity and comparison of moments of iterated maxima and minima of independent random variables

P. Hitczenko, Stanisław Kwapień, Wenbo V. Li +3

We provide necessary and sufficient conditions for hypercontractivity of the minima of nonnegative, i.i.d. random variables and of both the maxima of minima and the minima of maxim…

q-alg1996★ 6 cited

Demazure Modules and Perfect Crystals

Atsuo Kuniba, Kailash C. Misra, Masato Okado +1

We give a criterion for the Demazure crystal defined by Kashiwara to have a tensor product structure. We study the $\sln$ symmetric tensor case, and see some Demazure char…

mtrl-th1996

Multigrid Methods in Electronic Structure Calculations

E. L. Briggs, D. J. Sullivan, J. Bernholc

We describe a set of techniques for performing large scale ab initio calculations using multigrid accelerations and a real-space grid as a basis. The multigrid methods provide effe…

nucl-ex1996★ 43 cited

Test of Parity-Conserving Time-Reversal Invariance Using Polarized Neutrons and Nuclear Spin Aligned Holmium

P. R. Huffman, N. R. Roberson, W. S. Wilburn +6

A test of parity-conserving, time-reversal non-invariance (PC TRNI) has been performed in 5.9 MeV polarized neutron transmission through nuclear spin aligned holmium. The experimen…

patt-sol1996★ 1 cited

Twisted and Nontwisted Bifurcations Induced by Diffusion

Xiao-Biao Lin

We discuss a diffusively perturbed predator-prey system. Freedman and Wolkowicz showed that the corresponding ODE can have a periodic solution that bifurcates from a homoclinic loo…

patt-sol1996

Shadowing matching errors for wave-front-like solutions

Xiao-Biao Lin

Consider a singularly perturbed system Assume that the system has a sequence of regular and internal lay…

q-alg1996★ 2 cited

Demazure modules and vertex models: the affine sl(2) case

Omar Foda, Kailash C. Misra, Masato Okado

We characterize, in the case of affine sl(2), the crystal base of the Demazure module E_w(\La) in terms of extended Young diagrams or paths for any dominant integral weight \La and…

patt-sol1996

Local and Global Existence of Multiple Waves Near Formal Approximations

Xiao-Biao Lin

Assuming that a formal approximation of multiple waves has been obtained by matched asymptotic methods, we derive a {\em Spatial Shadowing lemma} to construct exact solutions near…

astro-ph1996★ 89 cited

Axisymmetric circumstellar interaction in supernovae

John M. Blondin, P. Lundqvist, Roger A. Chevalier

Multiwavelength observations of Type II supernovae have shown evidence for the interaction of supernovae with the dense slow winds from the red supergiant progenitor stars. Observa…