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arXiv 1912.05554hep-th
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${\cal N} = 4$超对称Yang-Mills理论的非相对论角

Nonrelativistic Corners of ${\cal N} = 4$ Supersymmetric Yang--Mills Theory

Troels Harmark, Nico Wintergerst

摘要:

我们表明,${\cal N} = 4$ supercrucic-Yang-Mills(SYM)理论的$\mathbb{R} \times S^3$规范群$\text{SU}(N)$描述在一个简单的低维非相对论性场论与$\text{SU}(1,1) \times \text{U}(1)$不变的相互作用在近BPS限制。在这个极限中,一个单一的复伴随标量场幸存下来,它的部分相互作用是通过精确地积分出SYM理论的规范玻色子而获得的。考虑到正常的顺序,相互作用匹配的$\text{SU}(1,1)$部门的一个循环膨胀运营商,建立在量子水平上的限制的一致性。我们发现了一个诱人的场论结构,对应于一个$(1+1)$维复杂的手征玻色子在一个圆耦合到一个非动力学规范场,无论是在伴随表示的$\text{SU}(N)$。在$\text{SU}(1,1)$近BPS极限中成功地构建了一个低维非相对论性场论,为其他BPS极限提供了概念证明。这些都有望导致更丰富的场论的非相对论角落的${\cal N} = 4$ SYM,包括费米子,规范场和超对称性,并可以提供一个新的路径走向理解强耦合有限$N$动力学的规范理论。

英文摘要:

We show that ${\cal N} = 4$ supersymmetric-Yang-Mills (SYM) theory on $\mathbb{R} \times S^3$ with gauge group $\text{SU}(N)$ is described in a near-BPS limit by a simple lower-dimensional nonrelativistic field theory with $\text{SU}(1,1) \times \text{U}(1)$ invariant interactions. In this limit, a single complex adjoint scalar field survives, and part of its interaction is obtained by exactly integrating out the gauge boson of the SYM theory. Taking into account normal ordering, the interactions match the one-loop dilatation operator of the $\text{SU}(1,1)$ sector, establishing the consistency of the limit at the quantum level. We discover a tantalizing field-theoretic structure, corresponding to a $(1+1)$-dimensional complex chiral boson on a circle coupled to a nondynamical gauge field, both in the adjoint representation of $\text{SU}(N)$. The successful construction of a lower-dimensional nonrelativistic field theory in the $\text{SU}(1,1)$ near-BPS limit provides a proof of concept for other BPS bounds. These are expected to lead to richer field theories in nonrelativistic corners of ${\cal N} = 4$ SYM that include fermions, gauge fields and supersymmetry and can provide a novel path towards understanding strongly coupled finite-$N$ dynamics of gauge theories.

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