15 research outputs found
Parity Violating Bosonic Loops at Finite Temperature
The finite temperature parity-violating contributions to the polarization
tensor are computed at one loop in a system without fermions. The system
studied is a Maxwell-Chern-Simons-Higgs system in the broken phase, for which
the parity-violating terms are well known at zero temperature. At nonzero
temperature the static and long-wavelength limits of the parity violating terms
have very different structure, and involve non-analytic log terms depending on
the various mass scales. At high temperature the boson loop contribution to the
Chern-Simons term goes like T in the static limit and like T log T in the
long-wavelength limit, in contrast to the fermion loop contribution which
behaves like 1/T in the static limit and like log T/T in the long wavelength
limit.Comment: 10 pp, 1 fig, revte
Quantum Aspects of Supersymmetric Maxwell Chern-Simons Solitons
We study the various quantum aspects of the supersymmetric Maxwell
Chern-Simons vortex systems. The fermion zero modes around the vortices will
give rise the degenerate states of vortices. We analyze the angular momentum of
these zero modes and apply the result to get the supermultiplet structures of
the vortex. The leading quantum correction to the mass of the vortex coming
from the mode fluctuations is also calculated using various methods depending
on the value of the coefficient of the Chern-Simons term to be zero,
infinite and finite, separately. The mass correction is shown to vanish for all
cases. Fermion numbers of vortices are also discussed.Comment: 40 pages, ReVTeX, HYUPT-94/04 SNUTP 94-6
Higher Dimensional Bell-Szekeres Metric
The collision of pure electromagnetic plane waves with collinear polarization in N-dimensional (N=2+n) Einstein-Maxwell theory is considered. A class of exact solutions for the higher dimensional Bell-Szekeres metric is obtained and its singularity structure is examined
The Effects of Various Flotation Parameters on Gold Recovery by Coal-Oil Assisted Gold Flotation
The effects of different physical parameters such as pulp density, aeration conditions, and impeller speed on the performance of coal-oil assisted gold flotation were investigated in this study. The experiments were conducted using samples taken from an epithermal gold ore deposit. The results demonstrated that increasing the solid concentration in feed pulp slightly improves recovery of gold particles, but accompanied by significant decreases in concentrate grade. At low aeration conditions gold recovery was relatively low whereas at high aeration conditions the selectivity was poor. The use of higher level of agitation in the agglomerate re-formation stage brought about an increase in gold recovery; however, gold grade of the concentrates tended to decline. Gold grade of the concentrate was significantly increased by reloading of the coal oil agglomerates; on the other hand, substantial decreases were observed in total gold recovery after each successive cycle