We propose a formula for the exact central charge of a B-type D-brane that is expected to hold in all regions of the Kähler moduli space of a Calabi–Yau. For Landau–Ginzburg orbifolds we propose explicit expressions for the mathematical objects that enter into the central charge formula. We show that our results are consistent with results in FJRW theory and the hemisphere partition function of the gauged linear sigma model.

中文翻译：

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D-布雷恩中央冲锋枪和兰道-金茨堡Orbifolds

我们为B型D膜的精确中心电荷提出了一个公式，该公式预计将在卡拉比丘的Kähler模空间的所有区域中保持不变。对于Landau–Ginzburg等值线，我们为输入中心电荷公式的数学对象提出了显式表达式。我们表明，我们的结果与FJRW理论和规范线性sigma模型的半球分配函数的结果一致。