1. Institute of Applied Physics and Computational Mathematics
2. Beijing, 100088
3. China
4. Beijing Computational Science Research Center
5. Beijing
6. Institute for Advanced Study
7. Tsinghua University
8. Beijing, 100084
9. Department of Physics
10. Capital Normal University
11. , Beijing, 100048
12. Applied Physics and Astronomy
13. Rensselaer Polytechnic Institute
14. Troy
15. USA