NEW FORMULATION OF SUPERSTRING FIELD THEORY

在目前的研究项目中，项目首席研究员Masao Ninomiya与Holger B.Nielsen爵士（哥本哈根大学Niels Bore研究所教授）合作，提出了一种新的弦场理论。该理论包含弦的左移和右移模式，可以描述弦的产生和湮灭。在研究上述新弦场理论时，我们注意到Kaku-Kikkawa的弦场理论只存在光锥理论，因为他们使用光锥规范，忽略了负能量模态。这是一个与场论完全等价的问题。在后一种理论中，它被认为是第二量子化理论中一个长期未解决的问题：在费米子理论中，真空是一个所谓的“狄拉克海”，根据泡利不相容原理，其中所有的负能态都被填满了。另一方面，没有人成功地构建了玻色子的“负能量海”。我们成功地构造了一种构造玻色子狄拉克海的方法。有人可能会说，这种新的量子化方法将玻色子和费米子完全平行对待。此外，与新合作的yoshinobu Habara博士，我们的公式扩展到一个超对称理论。我们发展这种新的量化形式的最初动机是在不抛弃玻色子弦的负能量模型的情况下应用于弦理论，并寻求正在发展的新的弦场理论。受WMAP的宇宙背景辐射等数据的启发，首席研究员Ninomiya与研究员H.Kawai等人合作，从弦理论的角度构建了所谓的“前大爆炸理论”，该理论被认为描述了从宇宙诞生到10^<-44>秒的早期宇宙。我们的理论是通过只使用弦理论的基本性质，如最小长度的存在，最大温度（哈格多恩温度）和存在最小曲率的假设来构建的。通过估计熵我们的宇宙重复了大爆炸和大收缩。我们的计算表明，我们现在的宇宙是诞生后的第35 -45代，它处于膨胀时代。我们的模型的新颖之处在于，为了得到暴胀膨胀，我们不需要引入与通常的标准宇宙学模型相反的人造和虚构的称为暴胀的玻色子。少

In the present research project, Masao Ninomiya who is the head investigator of the project proposed, in collaboration with Sir Holger B.Nielsen (Professor, Niels Bore Institute, University of Copenhagen), a new string field theory. This theory has as constituents the right- and left-moving modes of the string which can describe creation and annihilation of the strings. While studying the above written the new string field theory, we noticed that there exists only the light-cone string field theory by Kaku-Kikkawa because by using the light-cone gauge, they disregard negative energy modes. This is exactly equivalent problem to that of the field theory. In the latter, it is known as a longstanding unsolved problem in the 2nd quantization theory : In the fermion theory the vacuum is a so called "Dirac Sea" in which all the negative energy states are filled, one for each according to Pauli's exclusion principle.On the other hand, no one has succeeded to construct "negative energy sea (Dir … More ac Sea) for bosons. We succeeded to construct a method how to construct boson Dirac Sea. One may say that this new quantization method treats boson and fermion completely parallel. Furthermore, with a new collaboration Dr.Yoshinobu Habara, our formulation is extended to a super symmetric theory.Our original motivation to develop such a new quantization formalism is to apply into string theory without discarding negative energy models of bosonic strings, and seek new string field theory that is under development.Inspired by the data by WMAP of the cosmic background radiation etc, the head investigator Ninomiya in collaboration with the investigator H.Kawai et al. constructed from the point of view of the string theory so called "pre-bigbang theory" which is considered to describe the very early universe till 10^<-44> seconds from the birth our universe. Our theory is constructed by using only the basic properties of the string theory such as existences of the minimal length, the maximal temperature (Hagedorn temperature) and one assumption that there exists the minimal curvature. By estimating the entropy our universe has repeated the big bang and then big crunch. Our calculation shows that our present universe is 35th-45th generations after the birth and that it is in the inflation era.The novel feature of our model is that in order to get inflationary expansion, we do not need to introduce the artificial and fictitious boson called the inflation contrary to the usual standard cosmological models. Less