论文标题
EFT弦和出现
EFT strings and emergence
论文作者
论文摘要
我们重新审视4D $ {\ cal n} = 2 $ vector多部门的出现建议，这些扇区由II型字符串calabi-yau紧凑型产生，重点是轴基基本字符串或EFT字符串的作用。我们专注于大容量的IIA型压缩，其中EFT字符串由NS5-BRANES包装内部四循环产生，并考虑一组无限距离模量空间限制，可以根据缩放重量$ W = 1,2,3 $进行分类。在由d2/d0-branes组成的无限塔的一环阈值效果如何在$ w = 3 $的范围内产生仪表动力函数的渐近行为。通过考虑D2-Brane多包编码的数字，我们将此结果扩展到$ W = 2 $限制。在$ w = 1 $中，限制了前塔涉及EFT弦振荡，并且可以通过假设带电模式占据光谱占主导地位，可以独立地重现弱耦合$ u（1）$的行为。
We revisit the Emergence Proposal in 4d ${\cal N}=2$ vector multiplet sectors that arise from type II string Calabi--Yau compactifications, with emphasis on the role of axionic fundamental strings, or EFT strings. We focus on large-volume type IIA compactifications, where EFT strings arise from NS5-branes wrapping internal four-cycles, and consider a set of infinite-distance moduli-space limits that can be classified in terms of a scaling weight $w=1,2,3$. It has been shown before how one-loop threshold effects of an infinite tower of BPS particles made up of D2/D0-branes generate the asymptotic behaviour of the gauge kinetic functions along limits with $w=3$. We extend this result to $w=2$ limits, by taking into account D2-brane multi-wrapping numbers. In $w=1$ limits the leading tower involves EFT string oscillations, and one can reproduce the behaviour of both weakly and strongly-coupled $U(1)$'s independently on whether the EFT string is critical or not, by assuming that charged modes dominate the light spectrum.
