Associate Professor Chang,Po-Yao

Associate Professor

Po-Yao Chang

Personal Webpage

office:519

Office TEL： 03-5742957

Fax: 03-5723052

E-mail：pychang@phys.nthu.edu.tw

Condensed Matter Theory Group

	Education
University of Illinois at Urbana-Champaign, Ph.D. in Physics(2009/09~2015/07) National Tsing Hua University, M.S. in Physics (2006/09~2008/07) National Tsing Hua University, B.S. in Science (2002/09~2006/07)
	Professional Experience
Current Position：Associate Professor, Department of Physics, National Tsing Hua University(2023/08-) Assistant Professor, Department of Physics, National Tsing Hua University (2019/02~ 2023/07) Experience： Visiting Scientist, Max Planck Institute for the Physics of Complex systems (2018/07~2019/01) Postdoctoral Fellow, Rutgers University (2015/08~2018/07)
	Research Fields
Topological Materials Strongly correlated systems Non-equilibrium quantum systems Quantum entanglement

Research Interests and achievement Updated on February 22, 2019

My main research focus is bridging different subfields in physics, including topological phenomena, quantum entanglement, strong correlations, and non-equilibrium physics. Previously, we have found a new type of strongly correlated topological insulators in heavy fermion systems. We also develop a new method to characterize the topological properties of non-equilibrium states. The topological properties are related to the quantum entanglement of these non-equilibrium state and open a possibility of engineering topological phases of matter. In addition, we are developing new concepts on understating the quantum chaos and many-body localization from the entanglement aspect.

Selected Publications

1. Po-Yao Chang, Topology and entanglement in quench dynamics, arXiv: 1804.10625, Phys. Rev. B 97, 224304 (2018).

2. Yuanping Chen, Yan Gao, Yuee Xie, Po-Yao Chang, Shengbai Zhang, David Vanderbilt, Nexus network in Carbon honeycombs, Phys. Rev. Materials. 2, 044205 (2018).

3. Po-Yao Chang, Piers Coleman, Parity-violating hybridization in heavy Weyl semimetals, arXiv:1710.09928, Phys. Rev. B 97, 155134, (2018).

4. Yan Gao, Yuanping Chen, Yuee Xie, Po-Yao Chang, Marvin L. Cohen, Shengbai Zhang, A Class of topological nodal rings and its realization in carbon networks, Phys. Rev. B 96, 121108 (R), (2018).

5. Po-Yao Chang, Chuck-Hou Yee, Weyl-link semimetals, Phys. Rev. B 96, 081114 (R), (2017).

6. Onur Erten, Po-Yao Chang, Piers Coleman, Alexei Tsvelik, Skyrme insulators: insulators at the brink of superconductivity, Phys. Rev. Lett. 119, 057603 (2017).

7. Po-Yao Chang, Onur Erten, Piers Coleman, Mobius Kondo Insulators, Nature Physics 13, 794-798 (2017).

8. Xueda Wen, Po-Yao Chang, Shinsei Ryu, Topological entanglement negativity in Chern-Simons theories, J. High Energy. Phys. 09,012 (2016).

9. Po-Yao Chang, Xueda Wen, Entanglement negativity in free-fermion systems: an overlap matrix approach, Phys. Rev. B 93, 195140 (2016).

10. Xueda Wen, Po-Yao Chang, Shinsei Ryu, Entanglement negativity after a local quantum quench in conformal field theories, Phys. Rev. B 92, 075109 (2015).

11. Po-Yao Chang, Shunji Matsuura, Andreas P. Schnyder and Shinsei Ryu, Majorana vortex- bound states in three-dimensional nodal noncentrosymmetric superconductors, Phys. Rev. B 90, 174504 (2014).

12. Po-Yao Chang, Christopher Mudry and Shinsei Ryu, Symmetry-protected entangling boundary zero modes in crystalline topological insulators, J. Stat. Mech. Theor. Exp., P09014 (2014) (Special Issue: Quantum Entanglement in Condensed Matter Physics)

13. Shunji Matsuura, Po-Yao Chang, Andreas P. Schnyder and Shinsei Ryu, Protected boundary states in gapless topological phases, New J. Phys. 15, 065001 (2013).

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