String duality and modular forms
نویسندگان
چکیده
منابع مشابه
String Duality and Modular Forms
Tests of duality between heterotic strings onK3×T 2 (restricted on certain Narain moduli subspaces) and type IIA strings on K3-fibered Calabi-Yau threefolds are attempted in the weak coupling regime on the heterotic side by identifying pertinent modular forms related to the computations of string threshold corrections. Concretely we discuss in parallel the three cases associated with Calabi-Yau...
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The workshop was a huge success. Altogether thirty-seven mathematicians and physicists converged at the BIRS for the five day workshop. There were 26 one hour talks presented. Some were introductory lectures by mathematicians designed to prepare physicists in modular forms, quasimodular forms, modularity of Galois representations, and toric geometry. Vice versa, introductory lectures by physici...
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finding the pole requires analytic continuation unless there are boundstates at threshhold in the sector Q1 + Q2. The residue of the pole must be expressed in terms of matrix elements with on-shell states. By charge conservation and the Bogomolnyi bound these states must be the BPS states in the superselection sectorQ1+Q2. Therefore the residue of the pole “factors through” the space of BPS sta...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 1997
ISSN: 0370-2693
DOI: 10.1016/s0370-2693(97)00146-9