On least action D-branes
نویسندگان
چکیده
منابع مشابه
The Principle of Least Action and the Geometric Basis of D-branes
We analyze thoroughly the boundary conditions allowed in classical non-linear sigma models and derive from first principle the corresponding geometric objects, i.e. D-branes. In addition to giving classical D-branes an intrinsic and geometric foundation, D-branes in nontrivial H flux and D-branes embedded within D-branes are precisely defined. A well known topological condition on D-branes is r...
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Connection between the partition function for the 2D sigma model with boundary pertubations and the low energy effective action for massless fields in the open string theory is discussed. In the non-abelian case with a stack of N D-branes, the terms up to the order of α 3 are found.
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This is a short arrangement of notes on D–branes, offered as an embellishment of five lectures which were presented at the 1998 Trieste Spring School entitled “Non–Perturbative Aspects of String Theory and Supersymmetric Gauge Theory”. There is a good number of collections of pedagogical notes on D–branes in the literature, and since space here is limited, no attempt will be made to cover all o...
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We consider type IIA compactification on K3. We show that the instanton subsectors of the worldvolume of N 4-branes wrapped around K3 lead to a Hagedorn density of BPS states in accord with heterotic-type IIA duality in 6 dimensions. We also find evidence that the correct framework to understand the results of Nakajima on the appearance of affine Kac-Moody algebras on the cohomology of moduli s...
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This paper shows how to construct anomaly free world sheet actions in string theory with D-branes. Our method is to use Deligne cohomology and bundle gerbe theory to define geometric objects which are naturally associated to D-branes and connections on them. The holonomy of these connections can be used to cancel global anomalies in the world sheet action.
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ژورنال
عنوان ژورنال: Nuclear Physics B
سال: 1999
ISSN: 0550-3213
DOI: 10.1016/s0550-3213(98)00799-8