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arXiv 2408.00658hep-th
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体诱导的D膜形变与弦耦合常数

Bulk-induced D-brane deformations and the string coupling constant

Carlo Maccaferri, Alberto Ruffino, Jakub Vošmera

AI总结:

本文通过开闭弦场论在壳圆盘作用量研究体CFT形变诱导的D膜张力偏移,发现物质边界态g函数偏移总伴随与边界无关的弦耦合常数偏移,其领头行为普遍正比于形变体算符的球面两点函数。

摘要:

我们考虑计算开闭弦场论的在壳圆盘作用量,将其作为一种规范不变的方式来捕捉由体CFT形变所诱导的D膜张力偏移。我们研究体物质形变(包括边际形变和相关形变)对多个CFT中广泛边界条件的影响,并计算到微扰论的次领头(两圈)阶。在所有分析的例子中,我们发现物质边界态的$g$函数偏移总是伴随着一个与边界无关的弦耦合常数偏移,其领头行为普遍正比于形变体算符的球面两点函数。

英文摘要:

We consider computing the on-shell disk action of open-closed string field theory as a gauge-invariant way of capturing the shift in D-brane tension that is induced by a deformation of the bulk CFT. We study the effect of bulk matter deformations (both marginal and relevant) on a wide range of boundary conditions in a number of CFTs up to subleading (two-loop) order in perturbation theory. In all analyzed examples, we find that the shift in the $g$-function of the matter boundary state is always accompanied by a boundary-independent shift in the string coupling constant, whose leading behaviour is universally proportional to the sphere two-point function of the deforming bulk operator.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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