Condensed Matter Theory

Email: “pye” At ""
Affiliation: Perimeter Institute for Theoretical Physics, Waterloo, Ontario, Canada.

Research area: Condensed Matter Theory


Research Interests

I am a theoretical physicist in condensed matter physics. I show interests in strongly correlated electron systems. Currently, I am concentrating on the topics of the following keywords:

  • Symmetry-protected topological phases (SPT): Physics and Mathematics;
  • Exact analytic approach to low-dimensional spin systems;
  • Projective construction of fractional quantum Hall states and SPT;
  • Topological quantum field theory (TQFT) in various dimensions;
  • Entanglement spectrum and entanglement entropy in topological states of matter;
  • Semi-metal, anomalous transport;
  • Theory of underdoped copper-oxide high-$T_c$ compounds, ……


(9/2003-7/2007) undergraduate, Bachelor of Science, Physics

in Department of Physics, Sun Yat-sen University (SYSU), Guangzhou, China
Seminar Supervisor: Prof. Xiang-Qian Luo
Research area: Gauge theory on a lattice

(9/2007-7/2012) PhD, Physics

in Institute for Advanced Study (IASTU), Tsinghua University, Beijing, China
PhD Supervisor: Prof. Zheng-Yu Weng
Research area: Condensed Matter Theory
PhD Thesis title: Quantum Magnetism and High-Temperature Superconductivity in t-J model

Work Experience

(Since 9/2012) Postdoctoral Fellow, Perimeter Institute for Theoretical Physics, Waterloo, Ontario, Canada.

Research Travel Grant is provided by Perimeter Institute through Government of Canada and Province of Ontario.

Some Academic Activities / Services

  • (3/2011) Talk, 2011 March Meeting of American Physical Society in Dallas, Texas, USA.
  • (3/2011-4/2011) Visiting Scholar in Stanford University, California, USA.
  • (12/2011-1/2012) Visiting Student in Stanford University, California, USA.
  • (9/2011-12/2011) "Topomat11" workshop in KITP, UCSB (University of California at Santa Barbara), Santa Barbara, CA, USA.
  • (11/2012) UIUC-PI joint workshop, Institute for Condensed Matter Physics (ICMT), UIUC, Urbana-Champaign, IL, USA.
  • (2/2013) Institute for Advanced Study, Tsinghua University, Beijing, China.
  • (3/2013) 2013 March Meeting, Baltimore, ML, USA.
  • (3/2013) Seminar talk, Stanford University, CA, USA.
  • (5/2013) Talk, Conference "Emergence and Entanglement II", Perimeter Institute, Waterloo, Canada
  • (7/2013) Talk, Conference "Summer Forum on the interplay of Symmetry and Topology", Institute for Advanced Study, Tsinghua University, Beijing, China.
  • (7/2013) Seminar Talk, Institute of Physics, Chinese Academy of Sciences, Beijing, China.
  • (10/2013) Talk and organizer, Annual meeting of condensed matter group, Perimeter Institute.
  • (12/2013) Lecture talks on theory of SPT, Department of Physics, Zhejiang University, Hangzhou, Zhejiang Province, China.
  • (1/2014) Aspen Center for Physics, Aspen, CO, USA.
  • (3/2014) Talk, APS march meeting, Denver, CO, USA.
  • (3/2014) Talk, Princeton Center for Theoretical Science (PCTS), Princeton University, NJ, USA.
  • (10/2014) Talk, Institute for Condensed Matter Theory, UIUC-PI joint workshop, UIUC, Urbana, IL, USA.
  • (10/2014) GLAM theory seminar talk, Department of Physics, Stanford University, Stanford CA, USA.
  • (10/2014) Talk, Physics Department, California Institute of Technology, Pasadena, CA, USA.
  • (11/2014) Talk, Department of Physics, University of Toronto, Canada.

Scientific Service: Regular Referee of Physical Review Letters (PRL), Physical Review X (PRX), and Physical Review B (PRB) published by American Physical Society, and referee of some other cond-mat journals.

Academic Honors / Awards

  • Chen Ning Yang Fellowship (Tsinghua, 13 Sep., 2007)
  • The Best Poster Award in Annual Meeting of Chinese Physical Society (Nankai Univ., Sep. 2010)
  • Tsinghua Excellent Graduate Student Scholarship (Minor Award) (Tsinghua, Oct., 2010)
  • Tsinghua Scholarship for Overseas Graduate Studies (Tsinghua, July, 2011)
  • Tsinghua Excellent Graduate Student Scholarship (Major Award) (Tsinghua, Oct. 2011)
  • Graduation with Distinction of Beijing City (Jul. 2012)
  • Tsinghua Outstanding PhD Dissertation (Major Award) (Jul. 2012)
  • SYSU Excellence Award (Third-Class Award) (SYSU, Sep. 2004).
  • SYSU Excellence Award (Minor Award) (SYSU, Sep. 2005)
  • SYSU Excellence Award (Major Award) (SYSU, Sep. 2006)
  • Japan Sumitomo Corporation Scholarship (SYSU, Sep. 2006)
  • 2007 SYSU Graduation with Distinction (SYSU Degree Ceremony, July, 2007)

Research Papers

[YeXX]: XX stands for the year during which the first version was finalized.
[Xp]: X stands for the total pages for a selected long paper (typically $\geq 15$) in the up-to-date arXiv version.
All my research papers (except [07]) can be found in:
References and Citations can be found in the right hand side of the arXiv page of the paper by clicking "NASA-ADS"

Topological states of matter with symmetry, Topological order, etc.

[14c] PY and Zheng-Cheng Gu, [arXiv:1410.2594] [17p]
Title: Vortex-line condensation in three dimensions: A physical mechanism of bosonic topological insulators
More details can be found [here].
[14b] Zheng-Xin Liu, Jia-Wei Mei, PY, and Xiao-Gang Wen, [arXiv:1408.1676] [accepted by Phys. Rev. B in Dec. 2014]
Title: U(1)$\times$U(1) symmetry protected topological order in Gutzwiller wave functions

[13b] PY and Juven Wang, Phys. Rev. B 88, 235109 (2013). [arXiv:1306.3695] [23p]
Title: Symmetry-protected topological phases with charge and spin symmetries: Response theory and dynamical gauge theory in two and three dimensions

[13a] PY and Xiao-Gang Wen, Phys. Rev. B 89, 045127 (2014). [arXiv:1303.3572v3] [22p]
Title: Constructing symmetric topological phases of bosons in three dimensions via fermionic projective construction and dyon condensation

[12c] PY and Xiao-Gang Wen, Phys. Rev. B 87, 195128 (2013). [arXiv:1212.2121]
Title: Projective construction of two-dimensional symmetry-protected topological phases with U(1), SO(3), or SU(2) symmetries

Real electronic materials; Superconductivity, etc.

[13d] Yao Ma, PY, and Zheng-Yu Weng, New J. Phys. 16 083039 (2014). [arXiv:1311.3395] [30p]
Title: Low-Temperature Pseudogap Phenomenon: Precursor of High-$T_c$ Superconductivity

[12b] PY and Qing-Rui Wang, Nucl. Phys. B 874, 386 (2013). [arXiv:1206.0258]
Title: Monopoles, confinement and charge localization in the t-J model with dilute holes

[12a] Chao-Xing Liu, PY, and Xiao-Liang Qi, Phys. Rev. B 87, 235306 (2013). [arXiv:1204.6551]
Title: Chiral gauge field and axial anomaly in a Weyl-semi-metal

[11b] PY, Long Zhang, and Zheng-Yu Weng, Phys. Rev. B 85, 205142 (2012). [arXiv:1110.0125]
Title: Superconductivity in mutual Chern-Simons gauge theory

[11a] PY, Chu-Shun Tian, Xiao-Liang Qi, and Zheng-Yu Weng, Nucl. Phys. B 854, 815 (2012). [arXiv:1106.1223] [19p]
Title: Electron fractionalization and unconventional order parameters of the t-J model

[10] PY, Chu-Shun Tian, Xiao-Liang Qi, and Zheng-Yu Weng, Phys. Rev. Lett. 106, 147002 (2011). [arXiv:1007.2507]
Title: Confinement-deconfinement interplay in quantum phases of doped Mott insulators

Quantum entanglement, mathematical physics, high-energy physics, etc.

[14d] Ching Hua Lee and PY, [arXiv:1410.8670]
Title: Free-fermion entanglement spectrum through Wannier interpolation

[14a] Ching Hua Lee, PY, and Xiao-Liang Qi, J. Stat. Mech. P10023 (2014). [arXiv:1403.1039]
Title: Position-momentum duality in the entanglement spectrum of free fermions

[13c] Qing-Rui Wang and PY, Phys. Rev. B 90, 045106 (2014). [arXiv:1310.6496]
Title: Sign structure and generalized Marshall theorem for the spin-S t-J chain

[07] PY, X.-L. Yu, Y. Guan, and X.-Q. Luo, Mod. Phys. Lett. A 22, 547 (2007).
Title: Overlap fermions in the strong coupling limit

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