Title: N-z Relation and CMB Anisotropies in the Universe with an Oscillating Scalar Field Having a Null Field State Show Chinese title

Title: N-z关系与具有零场态的振荡标量场宇宙中的CMB各向异性

Abstract: We investigate whether or nor it is possible to find a scalar field model or models that are capable of explaining simultaneously the observed $N$-$z$ relation given by the 2dF Galaxy Redshift Survey, which still seems to exhibit a spatial periodicity of the galaxy distribution(the 'picket-fence structure'), and the CMB spectrum obtained by the WMAP experiments. It is found that both the observed size of the spatial periodicity and the amplitude of the 2dF $N$-$z$ relation can be fairly well fitted by the theoretical computations based on the scalar field models with $-20\le \xi\le -10$, and $140\le m_{\rm s} \le 160$, where $\xi$ is the gravitational coupling parameter, and $m_{\rm s}$ the normalized mass of the scalar field, respectively. To reproduce the CMB spectrum of the WMAP, we find that it is very crucial to have a null state of the scalar field in the early epochs of evolution of the universe. Show Chinese abstract

Abstract: 我们研究是否存在一种或多种标量场模型，能够同时解释由2dF星系红移巡天给出的观测到的$N$-$z$关系，该关系似乎仍表现出星系分布的空间周期性（“栅栏结构”），以及由WMAP实验获得的CMB谱。 It is found that both the observed size of the spatial periodicity and the amplitude of the 2dF $N$-$z$ relation can be fairly well fitted by the theoretical computations based on the scalar field models with $-20\le \xi\le -10$, and $140\le m_{\rm s} \le 160$, where $\xi$ is the gravitational coupling parameter, and $m_{\rm s}$ the normalized mass of the scalar field, respectively. To reproduce the CMB spectrum of the WMAP, we find that it is very crucial to have a null state of the scalar field in the early epochs of evolution of the universe.