ITP-SB-98-72 ANL-HEP-PR-98-140 hep-th/yymmddd Degeneration of ALF Dn Metrics

What Is the Upper Limit on the Lightest Supersymmetric

In this talk the question of what is the upper bound on the lightest supersymmetric Higgs mass, mh is addressed. This question is relevant since experimental lower bounds on mh might implement, in the near future, exclusion of supersymmetry. By imposing (perturbative) unification of the gauge couplings at some high scale > ∼ 10 GeV, we have found that for a top-quark mass Mt = 175 GeV, and depe...

v 2 2 6 O ct 1 99 8 hep - th / 9809133 TAUP - 2518 - 98 Precision “ Measurements ” of the QQ̄ Potential in MQCD

ar X iv : h ep - t h / 98 04 07 5 v 1 9 A pr 1 99 8 PUPT - 1786 hep - th / 9804075 Equivariant Sheaves

In this article we review some recent developments in heterotic compactifications. In particular we review an " inherently toric " description of certain sheaves, called equivariant sheaves, that has recently been discussed in the physics literature. We outline calculations that can be performed with these objects, and also outline more general phenomena in moduli spaces of sheaves.

Imperial/TP/98–99/24 hep-th/9812086 DOMAIN WALLS AND THE UNIVERSE ∗

Imperial/TP/98–99/24 hep-th/9812086 D = 11 supergravity possesses D = 5 Calabi-Yau compactified solutions that may be identified with the vacua of the Hořava-Witten orbifold construction for M–theory/heterotic duality. The simplest of these solutions naturally involves two 3-brane domain walls, which may be identified with the orbifold boundary planes; this solution also possesses an unbroken Z...

ITP-SB-73 hep-th yymmdd Quantization of Non-Polynomial Field Theories

We re-examine the quantization of a class of non-polynomial scalar field theories which interpolates continuously from a free one to φ theory. The quantization of such theories is problematic because the Feynman rules may not be directly obtained. We give a means for calculating the correlation functions in this theory. The Feynman rules developed here shall enable further progress in the under...