117 research outputs found
Renormalization Flow, Duality, and Supersymmetry Breaking in Some N=1 Product-Group Theories
We discuss the renormalization group flow, duality, and supersymmetry
breaking in N = 1 supersymmetric SU(N)xSU(M) gauge theories.Comment: Talk given at SUSY'96; 3 pages, LateX, style-, ps-files include
"Light from chaos" in two dimensions
We perform a Monte-Carlo study of the lattice two-dimensional gauged
XY-model. Our results confirm the strong-coupling expansion arguments that for
sufficiently small values of the spin-spin coupling the ``gauge symmetry
breaking" terms decouple and the long-distance physics is that of the unbroken
pure gauge theory. We find no evidence for the existence, conjectured earlier,
of massless states near a critical value of the spin-spin coupling. We comment
on recent remarks in the literature on the use of gauged XY-models in proposed
constructions of chiral lattice gauge theories.Comment: 6 pages, 7 figure
Warp Factors and Extended Sources in Two Transverse Dimensions
We study the solutions of the Einstein equations in (d+2)-dimensions,
describing parallel p-branes (p=d-1) in a space with two transverse dimensions
of positive gaussian curvature. These solutions generalize the solutions of
Deser and Jackiw of point particle sources in (2+1)-dimensional gravity with
cosmological constant. Determination of the metric is reduced to finding the
roots of a simple algebraic equation. These roots also determine the nontrivial
"warp factors" of the metric at the positions of the branes. We discuss the
possible role of these solutions and the importance of "warp factors" in the
context of the large extra dimensions scenario.Comment: 11 pages, LaTeX; References and acknowledgments adde
Dynamical Supersymmetry Breaking---Why and How
This theoretical review is intended to give non-theorists a flavor of the
ideas driving the current efforts to experimentally find supersymmetry. We
discuss the main reasons behind the expectation that supersymmetry may be "just
around the corner" and may be discovered in the near future. We use simple
quantum-mechanical examples to illustrate the concept---and the power---of
supersymmetry, the possible ways to break supersymmetry, and the dynamical
generation of small scales. We then describe how this theoretical machinery
helps shape our perception of what physics beyond the electroweak scale might
be.Comment: LaTeX, 29 pages, 14 ps figures. Talk given at the SLAC Experimental
Semina
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