Gauge String Field Theory of Superstring

1.在我们京都小组以前建立的所谓HIKKO开闭弦场论中，包含了一个非物理的弦长参数α，它导致了在环振幅水平上产生无穷大因子的问题。我们证明了这个问题可以用协变光锥技术来解决，即通过引入一个玻色和两个费米非物理坐标，使α成为“四重态”的一员。阐明了构造“协变光锥弦场论”的一般步骤，得到了相容的开弦规范场和闭弦规范场理论.我们发现了隐藏在维滕的开超弦场论的Ramond区中的新的规范对称性。这些新的规范对称性对维滕理论的一致性具有重要意义，并将在构造闭超弦场和杂合弦场理论中发挥重要作用.我们已经成功地构造了一个非多项式闭弦场论，它不包含任何非物理（零模）变量。完整的非多项式作用量被明确地构造出来，并且是规范不变的.

1. In the so-called HIKKO's open and closed string field theory, which we Kyoto group constructed previously, an unphysical string-length parameter alpha is contained and it caused a problem of yielding a factor of infinity at the loop amplitude level. We have shown that this problem can be solved by the technique of covariantized light-cone in which alpha is made a member of "quartet" by introducing one bose and two fermi unphysical coordinates. We clarified the general procedure for constructing "covariantized light- cone string field theory" to obtain consistent open and closed string gauge field theories.2. We have found new gauge symmetries hidden in the Ramond sector of Witten's open superstring field theory. These new gauge symmetries are important for the consistency of Witten's theory and will play an essential role in constructing closed super and heterotic string field theories.3. We have succeeded in constructing a nonpolynomical closed string field theory which contains no unphysical (zero-mode) variables at all. The full nonpolynomial action is constructed explicitly and is shown gauge- invariant.