戴德昌 特别研究员
天文系
剑川路955号2楼
diedachung@gmail.com

Dr. Dai received his Ph.D. in  Cosmology and Particle Physics in 2008 from Case Western Reserve University. He had a post doc position at SUNY Buffalo for two years and then moved to University Cape Town as a post doc for the other two years. He joined  Shanghai Jiao Tong University as a Distinguished Research Fellow in 2012.  His Ph.D. study is focusing on the modified gravity theories and mini-black hole. He then studied whether the dark matter will form a dense stars that is supported by the Fermi pressure. He further predicted that the existence of electroweak core in a quark star. In the central core quarks decay to neutrinos and generate energy. Since star collapsing is similar to anti-big bang, studying star evolution helps to understand the big bang and the evolution of the universe. Apart from pure theoretical study, he also did some data analysis. Recently he studied large-scale coherent motion in the universe using the existing Type IA supernovae data, and  showed no evidence for bulk flow. This study supports the Lambda-CDM prediction.

  1. Using quasars as standard clocks for measuring cosmological redshiftDe-Chang Dai (UCT), Glenn D. Starkman (CWRU), Branislav Stojkovic(SUNY, Buffalo), DejanStojkovic (SUNY Buffalo), Amanda Weltman (UCT)Published in Phys. Rev. Lett 108, 231302 (2012)e-print: arXiv:1204.5191
  2. ”Vanishing Dimensions and Planar Events at the LHC”Luis Anchordoqui (Wisconsin U., Milwaukee), De Chang Dai (SUNY, Buffalo), Malcolm Fairbairn(King’s Coll. London), Greg ndsberg (Brown U.), Dejan Stojkovic (SUNY, Buffalo).Published in Mod. Phys. Lett. A27 (2012) 1250021-Print: arXiv:1003.5914 [hep-ph]
  3. ”Analytic solution for a static black hole in RSII model.”De-Chang Dai (SUNY at Buffalo), Dejan Stojkovic(SUNY at Buffalo)Published in Phys.Lett. B: 704, 354-359 (2011)e-Print: arXiv:1004.3291 [gr-qc]
  4. ”Measuring the cosmological bulk flow using the peculiar velocities of supernovae.”De-Chang Dai(SUNY at Buffalo), William H. Kinney(SUNY at Buffalo), Dejan Stojkovic(SUNYat Buffalo)Published in JCAP, 1004, 015 (2011)e-Print: arXiv:1102.0800 [astro-ph.CO]

His partial publications and preprints as well as the citations can also be found on Spires or arxiv