Research on the fundamental modes in unification theory

M理论有望成为统一的理论，并在世界范围内得到了大力的分析。M2膜是M理论中最基本的激发之一，我们分析了在二维环面上压缩两维空间时的情况。在超膜作用下，我们明确地表明M2膜可以是基本弦、D弦或它们的复合态，按照二维环面上的包裹方式。

M-theory is expected to be the unified theory and it has been analyzed vigorously in the world. M2 brane is one of the fundamental excitations in M-theory and we have analyzed how it looks like when the two-space dimensions are compactified on the 2-dim Tori. With the supermembrane action we have explicitly shown that the M2 brane can be a fundamental string, a D-string or their composite states in supersting according to the way of the wrapping on 2-dim Tori.