منابع مشابه
BPS states in Matrix Strings
Matrix string theory (or more generally U-Duality) requires Super Yang-Mills theory to reflect a stringy degeneracy of BPS short multiplets. These are found as supersymmetric states in the Yang-Mills carrying (fractionated) momentum, or in some cases, instanton number. Their energies also agree with those expected from M(atrix) theory. A nice parallel also emerges in the relevant cases, between...
متن کاملAlgebras, BPS States, and Strings
We clarify the role played by BPS states in the calculation of threshold corrections of D=4, N=2 heterotic string compactifications. We evaluate these corrections for some classes of compactifications and show that they are sums of logarithmic functions over the positive roots of generalized Kac-Moody algebras. Moreover, a certain limit of the formulae suggests a reformulation of heterotic stri...
متن کاملQuivers and Bps Bound States
Exercise 1. Consider the quiver Q1 with 2 nodes and r arrows 1→ 2. (1) Compute using either the Harder-Narasimhan filtrations or the Reineke formula I(~ d) = p(M(~ d, ~ θ))/(s− 1) for ~ θ = (1,−1) for dimension vectors ~ d = (2, 1), (1, 2). (2) Verify that p(M(~ d, ~ θ)) is a polynomial whose degree is given by the dimension formula. (3) Compute the Euler number χ(M(~ d, ~ θ)) = p(M(~ d, ~ θ),−...
متن کاملBPS States and Minimal Surfaces
It was observed recently, that the low energy effective action of the four-dimensional supersymmetric theories may be obtained as a certain limit of M theory. From this point of view, the BPS states correspond to the minimal area membranes ending on the M theory fivebrane. We prove that for the configuration, corresponding to the SU (2) Super Yang-Mills theory, the BPS spectrum is correctly rep...
متن کاملAnalytic Solution and BPS States
The integrability of N = (2, 2) dilaton supergravity in two dimensions is studied by the use of the graded Poisson Sigma model approach. Though important differences compared to the purely bosonic models are found, the general analytic solutions are obtained. The latter include minimally gauged models as well as an ungauged version. BPS solutions are an especially interesting subclass. bergamin...
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ژورنال
عنوان ژورنال: Advances in Theoretical and Mathematical Physics
سال: 2013
ISSN: 1095-0761,1095-0753
DOI: 10.4310/atmp.2013.v17.n2.a1