کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9855071 | 1527864 | 2005 | 34 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Asyzygies, modular forms, and the superstring measure II
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موضوعات مرتبط
مهندسی و علوم پایه
ریاضیات
فیزیک ریاضی
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
Precise factorization constraints are formulated for the three-loop superstring chiral measure, in the separating degeneration limit. Several natural ansatzes in terms of polynomials in theta constants for the density of the measure are examined. None of these ansatzes turns out to satisfy the dual criteria of modular covariance of weight 6, and of tending to the desired degeneration limit. However, an ansatz is found which does satisfies these criteria for the square of the density of the measure, raising the possibility that it is not the density of the measure, but its square which is a polynomial in theta constants. A key notion is that of totally asyzygous sextets of spin structures. It is argued that the ansatz produces a vanishing cosmological constant.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Physics B - Volume 710, Issues 1â2, 21 March 2005, Pages 83-116
Journal: Nuclear Physics B - Volume 710, Issues 1â2, 21 March 2005, Pages 83-116
نویسندگان
Eric D'Hoker, D.H. Phong,