NEW FORMULATION OF SUPERSTRING FIELD THEORY

超弦场理论的新表述

基本信息

批准号：
13640277
负责人：
NINOMIYA Masao
金额：
$ 2.43万
依托单位：
KYOTO UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2001
资助国家：
日本
起止时间：
2001 至 2004
项目状态：
已结题

项目摘要

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

在目前的研究项目中，该项目的首席研究员 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。弦的右移和左移模式可以描述弦的产生和湮灭，在研究上面写的新弦场论时，我们注意到只存在光锥弦场论。 Kaku-Kikkawa 因为通过使用光锥规范，他们忽略了负能量模式，这与场论中的问题完全相同，这被称为第二量子化理论中长期未解决的问题。根据费米子理论，真空是一个所谓的“狄拉克海”，其中充满了所有负能态，根据泡利不相容原理，每一个负能态都充满了。另一方面，没有人成功构建“负能态海”（迪拉克海）。我们成功地构建了一种构建玻色子狄拉克海的方法，可以说这种新的量子化方法将玻色子和费米子完全平行地对待。此外，通过Yoshinobu Habara博士的新合作，我们的公式得到了扩展。我们发展这种新的量子化形式的最初动机是在不放弃玻色弦负能量模型的情况下应用于弦理论，并寻求新的弦场理论。受到宇宙背景辐射等 WMAP 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”。被认为描述了从宇宙诞生起 10^<-44> 秒的极早期宇宙。我们的理论是仅使用弦理论的基本属性（例如最小长度、最大温度（哈格多恩温度）的存在性）构建的。和存在最小曲率的假设通过估计我们的宇宙重复了大爆炸和大挤压，我们的计算表明我们现在的宇宙是在诞生后的第35-45代，并且处于暴胀时代。我们模型的新颖之处在于，为了获得暴胀膨胀，我们不需要引入称为暴胀的人为和虚构的玻色子，这与通常的标准宇宙学模型相反。