3D Simulation of Ultra Light Scalar Field Dark Matter

計畫名稱:3D Simulation of Ultra Light Scalar Field Dark Matter

所屬單位:物理系

研究團隊:計算天文物理實驗室

計畫主持人:闕志鴻

研究人員:胡德邦

資源需求:Intel fortran compiler, fftw2.1.5, LAM-MPI or MPICH

使用期間:2008/05~

研究主題:
3D Simulation of Ultra Light Scalar Field Dark Matter

研究內容概述:
We treat dark matter as an extremely light scalar field, which has a De-Broglie wavelength comparable to or slightly smaller than the Jean's length, and it is assumed to be described by a single wave function. As the quantum fluctuation provides effective pressure, it acts against gravitational collapse in the central region of a bound object. The large-scale structures (LSS) obtained by solving the Schrodinger-Poisson Equation (SP hereafter) using the 3D Spectral Method scheme is presented. And there is only one free parameter $\eta$, the value of 'mass' chosen to adjust the Jean's length. Surprisingly, our simulation indicate the center of the bound object still remains cusp profile. The behavior of the core collapsing looks more like a fluid limit of dark matter.

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