منابع مشابه
D-branes and Deformation Quantization
In this note we explain how world-volume geometries of D-branes can be reconstructed within the microscopic framework where D-branes are described through boundary conformal field theory. We extract the (non-commutative) world-volume algebras from the operator product expansions of open string vertex operators. For branes in a flat background with constant non-vanishing B-field, the operator pr...
متن کاملÉtudes on D–Branes
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...
متن کاملInstantons on D-branes
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...
متن کاملHolonomy on D-branes
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.
متن کاملLectures on D-branes
This is an introduction to the physics of D-branes. Topics covered include Polchinski’s original calculation, a critical assessment of some duality checks, D-brane scattering, and effective worldvolume actions. Based on lectures given in 1997 at the Isaac Newton Institute, Cambridge, at the Trieste Spring School on String Theory, and at the 31rst International Symposium Ahrenshoop in Buckow.
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ژورنال
عنوان ژورنال: Journal of High Energy Physics
سال: 2002
ISSN: 1029-8479
DOI: 10.1088/1126-6708/2002/02/022