626 research outputs found
The Color of Desire: Fulfilling Adoptive Parents\u27 Racial Preferences Through Discriminatory State Action
African American Intimacy: The Racial Gap in Marriage
This essay is divided into three parts. Part I documents the extent of the racial gap in marriage. Part II uses the marriage patterns of affluent Black men in particular to speculate about how the relationships of Black men and women might be influenced by the relative numbers of men and women and the men\u27s socioeconomic characteristics in ways that depress marriage rates. Part III connects the low rate of marriage among African Americans to the differing interracial marriage rates of Black men and women
Aspects of ALE Matrix Models and Twisted Matrix Strings
We examine several aspects of the formulation of M(atrix)-Theory on ALE
spaces. We argue for the existence of massless vector multiplets in the
resolved spaces, as required by enhanced gauge symmetry in M-Theory,
and that these states might have the correct gravitational interactions. We
propose a matrix model which describes M-Theory on an ALE space in the presence
of wrapped membranes. We also consider orbifold descriptions of matrix string
theories, as well as more exotic orbifolds of these models, and present a
classification of twisted matrix string theories according to Reid's exact
sequences of surface quotient singularities.Comment: 27 pages LaTeX2e, 7 figures, using utarticle.cls (included),
array.sty, amsmath.sty, amsfonts.sty, cite.sty, epsf.sty. Bibtex style:
utphys.bst (.bbl file included). Section on wrapped membrane states revised
and expanded. We now argue for the existence of wrapped membranes and propose
a matrix model which describes M-Theory on an ALE space in the presence of
wrapped membrane
Hamiltonian domain wall fermions at strong coupling
We apply strong-coupling perturbation theory to gauge theories containing
domain-wall fermions in Shamir's surface version. We construct the effective
Hamiltonian for the color-singlet degrees of freedom that constitute the
low-lying spectrum at strong coupling. We show that the effective theory is
identical to that derived from naive, doubled fermions with a mass term, and
hence that domain-wall fermions at strong coupling suffer both doubling and
explicit breaking of chiral symmetry. Since we employ a continuous fifth
dimension whose extent tends to infinity, our result applies to overlap
fermions as well.Comment: Revtex, 21 pp. Some changes in Introduction, dealing with consistency
with previous wor
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