منابع مشابه
Dedicated to the Memory of Abdus Salam
This review considers the properties of classical solutions to supergravity theories with partially unbroken supersymmetry. These solutions saturate Bogomol’nyPrasad-Sommerfield bounds on their energy densities and are the carriers of the p-form charges that appear in the supersymmetry algebra. The simplest such solutions have the character of (p + 1)-dimensional Poincaré-invariant hyperplanes ...
متن کاملInternational collaboration. Emerging from the shadow of Abdus Salam.
TRIESTE, ITALY--Arbab Ibrahim Arbab had reached a dead end. He'd earned a bachelor's degree at the University of Khartoum, Sudan, in the early 1990s but was unable to continue his studies in astrophysics. "There is hardly any money for research in Sudan," he explains. Then one of his former professors suggested that he apply for a new diploma course at the United Nations-backed Abdus Salam Inte...
متن کاملThe Abdus Salam International Centre for Theoretical Physics Induced Representations of the Multiparameter Hopf
We construct induced representations of the multiparameter Hopf superalgebras Uuq(gl(m=n)) and Uuq(sl(m=n)). The rst superalgebra we constructed earlier as the dual of the multiparameter quantum deformation of the supergroup GL(m=n). The second superalgebra is a Hopf subalgebra of the rst for a special choice of the parameters. The representations are labelled by m+n integer numbers, respective...
متن کاملand High Energy Section, The Abdus Salam International Centre for Theoretical Physics,
We evaluate the W-exchange diagram within the framework of light cone sum rules (LCSR), taking B0 d → D s K+ as an example. This decay mode, though proceeding via the W-exchange diagram only and therefore expected to be highly suppressed, has the branching ratio 3.2 × 10−5. We estimate the W-exchange amplitude within LCSR, including soft gluon corrections, to twist-3 accuracy. The calculation n...
متن کاملThe Abdus Salam International Centre for Theoretical Physics Submersions and Equivariant Quillen Metrics
In this paper, we calculate the behaviour of the equivariant Quillen metric by submersions. We thus extend a formula of Berthomieu-Bismut to the equivariant case. MIRAMARE { TRIESTE November 1998 Address after 1 December 1998. E-mail: [email protected] R esum e. Dans cet article, on calcule le comportement de la m etrique de Quillen equivariante par submersions. On etend ainsi une...
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ژورنال
عنوان ژورنال: Physics Today
سال: 1997
ISSN: 0031-9228,1945-0699
DOI: 10.1063/1.2806703