We focus on the continuous symmetry transformations for the three ($2 + 1$)-dimensional (3D) system of a combination of the free Abelian 1-form and 2-form gauge theories within the framework of Becchi-Rouet-Stora-Tyutin (BRST) formalism. We establish that this combined system is a tractable field-theoretic model of Hodge theory. The symmetry operators of our present theory provide the physical realizations of the de Rham cohomological operators of differential geometry at the algebraic level. Our present investigation is important in the sense that, for the first time, we are able to establish an odd dimensional (i.e. $D = 3$) field-theoretic system to be an example for Hodge theory (besides earlier works on a few interesting ($0 + 1$)-dimensional toy models as well as a set of well-known ${\mathcal N} = 2$ SUSY quantum mechanical systems of physical interest). For the sake of brevity, we have not taken into account the 3D Chern-Simon term for the Abelian 1-form gauge field in our theory which allows the mass and gauge-invariance to co-exist together.
On Calabi-Yau Complete Intersections in Toric Varieties
研究了$d$维环面Fano簇中$r$半样本因子的Calabi-Yau完全交$V$的Hodge理论性质.我们的主要目的是证明第二作者提出的组合对偶与镜像对称预言的Hodge数的对偶是一致的。预计对任意维度奇异卡-丘变体$V$的镜像对称预测的完整验证需要考虑所谓的{ \em弦理论霍奇数} $h^{p,q}_{\rm st}(V)$。我们仅限于弦理论霍奇数$h^{0,q}_{\rm st}(V)$和$h^{1,q}_{\rm st}(V)$ $(0 \leq q \leq d-r) which coincide with the usual Hodge numbers $ h^{0，q}（\widehat{V}）$ and $ h^{1，q}（\widehat{V}）$ of a $ MPCP $-desingularization $ \widehat{V} $ of $ V$。
