Supersymmetry and Cosmology

超对称性和宇宙学

基本信息

批准号：
10209206
负责人：
KAWASAKI Masahiro
金额：
$ 4.1万
依托单位：
The University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research on Priority Areas (B)
财政年份：
1998
资助国家：
日本
起止时间：
1998 至 2001
项目状态：
已结题

项目摘要

We have studied inflationary universe models in the framework of supergravity. We have solved initial value problem in a new inflation model introducing "pre-inflation" which takes place before the new inflation and sets the initial vale through supergravity effects. This "double inflation" model leads to production of primordial black holes or a broken power spectrum of density fluctuations. We have also constructed a chaotic inflation model in supergravity. We have studied baryogenesis in SUSY models and, in particular, studied the dynamics of the Q-balls and Affleck-Dine field and have found that the model parameters are stringently constrained by the existence of the Q-ball.Making use of the fact that the quantum corrections to the gravitational action starts at the fourth order in curvature in 11 dimensional supergravity, we have shown that topological inflation naturally takes place in this theory. We have further shown that a large extra dimension is required in order to reproduce the correct amplitude of the curvature perturbations. We proposed a natural double inflation model in supergravity in amplitude of the curvature perturbations. We proposed a natural double inflation model in supergravity in which appropriate reheating is realized without resorting to higher order terms in Kahler potential, I showed that the observed cosmological constant or dark energy can naturally be explained if we live in one of the perturbative vacuum state in a theory with two or more degenerate vacua. We developed a formalism to reproduce the primordial spectrum of curvature perturbation out of the all-sky map of cosmic microwave background radiation. We can thereby obtain important information on particle physics at the inflation era in the early universe.

我们研究了超级实力框架中的通货膨胀宇宙模型。我们已经在新的通货膨胀模型中解决了初始价值问题，该模型引入了“预处理”，该通货膨胀发生在新的通货膨胀之前，并通过超级重力效应设置了初始谷。这种“双重充气”模型导致原始黑洞的产生或密度波动的功率频谱破裂。我们还在超级重力中构建了混乱的通货膨胀模型。 We have studied baryogenesis in SUSY models and, in particular, studied the dynamics of the Q-balls and Affleck-Dine field and have found that the model parameters are stringently constrained by the existence of the Q-ball.Making use of the fact that the quantum corrections to the gravitational action starts at the fourth order in curvature in 11 dimensional supergravity, we have shown that topological inflation naturally takes place in this theory.我们进一步表明，为了重现曲率扰动的正确幅度，需要大大的额外维度。我们提出了曲率扰动振幅中超级重力的自然双通胀模型。我们提出了一个自然的双重通货膨胀模型，其中实现了适当的重新加热而不诉诸于卡勒潜力中的高阶项，我表明，如果我们生活在具有两个或更多次变性的理论中，观察到的宇宙学恒定或深色能量自然可以解释。我们开发了一种形式主义，以从宇宙微波背景辐射的全天空图中复制曲率扰动的原始光谱。因此，我们可以在早期宇宙的通货膨胀时代获得有关粒子物理学的重要信息。