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arXiv 0710.0648hep-th
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碎裂D4膜与耦合q-变形Yang Mills

Fragmenting D4 branes and coupled q-deformed Yang Mills

Daniel L. Jafferis, Natalia Saulina

摘要:

我们计算了包裹在充分因子上的两叠D4-膜的BPS态指数,它们重叠在非紧Calabi-Yau 3-fold中的紧Riemann曲面上。这个指数是根据U(N)x U(M)q-变形的杨米尔斯理论与双基本物质。从大D4荷极限的因式分解出发,我们认为我们的结果计算了D4膜分裂成一对D4膜的分裂流的BPS态指数跨越边缘稳定性壁的跳跃.

英文摘要:

We compute the index of BPS states for two stacks of D4-branes wrapped on ample divisors and overlapping over a compact Riemann surface inside non-compact Calabi-Yau 3-fold. This index is given in terms of U(N) x U(M) q-deformed Yang Mills theory with bifundamental matter. From the factorization in the limit of large D4 charge, we argue that our result computes the jump in the index of BPS states across the wall of the marginal stability for the split flow of a D4 brane fragmenting into a pair of D4 branes.

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