Loop groups, grassmanians and string theory
نویسندگان
چکیده
منابع مشابه
Sporadic groups and string theory
whereW is the Weyl group, ρ is the Weyl vector, and the product is over all positive roots α. This is a special case of Weyl’s character formula which says that the character of a finite dimensional representation is equal to a sum similar to the left hand side divided by the product on the right hand side; for the 1-dimensional representation the character is 1 so the sum is equal to the produ...
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In the paper [N], while studying adiabatic deformations of Dirac operators on manifolds with boundary, we were led to the following nite dimensional dynamics problem. Consider (n) the grassmannian of lagrangian subspaces in the canonical symplectic space E = R2n . If A : E ! E is a selfadjoint operator anticommuting with the canonical complex structure J on E, then A belongs to the Lie algebra ...
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دو هدف را برای انجام این پایان نامه دنبال می کنیم . نشان می دهیم که بسط دامنه پراکندگی یک میدان راموند-راموند دو میدان پیمانه ای و یک میدان تاکیونی caat بسط سازگاری است که این نکته بیانگر آنست که بسط تاکیونها که بسط انرژی پایین نیست را یافته ایم و این بسط با بسط aatt,ctta,cta,cttt سازگار است با مقایسه با دامنه پراکندگی تعدادی از تصحیحات کنشهای tachyonic dbi, wess-zumino را می یابیم .
15 صفحه اولThe Semispin Groups in String Theory
In string theory, an important role is played by certain Lie groups which are locally isomorphic to SO(4m), m ≤ 8. It has long been known that these groups are actually isomorphic not to SO(4m) but rather to the groups for which the half spin representations are faithful, which we propose to call Semispin(4m).(They are known in the physics literature by the ambiguous name of “Spin(4m)/Z2”.) Rec...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 1987
ISSN: 0370-2693
DOI: 10.1016/0370-2693(87)90839-2