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The phenomenological implications of the eleven dimensional limit of M-theory (strongly coupled E 8 × E 8) are investigated. In particular we calculate the supersymmetric spectrum subject to constraints of correct electroweak symmetry breaking and the requirement that the lighest supersymmetric particle provides the dark matter of the universe. The B-soft… (More)
We construct a new set of intersecting D4-brane models that yield the (non-supersym-metric) standard model up to vector-like matter and, in some cases, extra U(1) factors in the gauge group. The models are constrained by the requirement that twisted tadpoles cancel, and that the gauge boson coupled to the weak hypercharge U(1) Y does not get a string-scale… (More)
The moduli dependent Yukawa couplings between twisted sectors of the Z 3 ×Z 3 orbifold are studied.
The phenomenological implications of the M-theory limit in which supersymmetry is broken by the auxiliary fields of five-brane moduli is investigated. Assuming that the lightest neutralino provides the dark matter in the universe, constraints on the sparticle spectrum are obtained. Direct detection rates for dark matter are estimated.
The moduli dependence of string loop threshold corrections to gauge coupling constants is investigated for those Z N Coxeter orbifolds with the property that some twisted sectors have fixed planes for which the six-torus T 6 can not be decomposed into a direct sum T 4 T 2 with the fixed plane lying in T 2. It is a remarkable feature of the extrapolation … (More)
The possibility of spontaneous breaking of CP symmetry by the expectation values of orbifold moduli is investigated with particular reference to CP violating phases in soft supersymmetry breaking terms. The effect of different mechanisms for stabilizing the dilaton and the form of the non-perturbative superpotential on the existence and size of these phases… (More)
Cosmological inflation is studied in the case where the inflaton is the overall mod-ulus T for an orbifold. General forms of the (non-perturbative)superpotential are considered to ensure that G = K + ln|W | 2 is modular invariant.
The phenomenological implications of the eleven dimensional limit of M-theory (strongly coupled E 8 ×E 8) are investigated. In particular we calculate the supersymmetric particle spectrum subject to constraints of correct electroweak symmetry breaking and the requirement that the lightest supersymmetric particle provides the dark matter of the universe. We… (More)
Jenkins's technique has been used to close 238 abdominal wounds. No dehiscence occurred in thie series. It is suggested that this method, which gives strict guidelines on wound closure, is ideal for teaching good technique for wound closure.