Cheng Peng  ( 彭程 )

Photo Cheng Peng

 

 

 

 

Position

Tenure-Track AP, will join in 2020

View C. Peng's CV

 

 

Education

2008 - 2013 Ph.D. University of Michigan

2004 - 2008 B.Sc. Peking University

 

 

 


Positions and Experiences

2016 - Postdoctoral Research Associate, Brown University

2013 - 2016 Postdoctoral Research Scholar, ETH Zurich

 

 

 


Research Interests

I am a theoretical physicist working on aspects of quantum field theory and gravity that help reveal the mystery of the quantum theory of gravity. Some of the subjects that I have studied include

  • Gauge/Gravity duality; its origin, generalizations, and applications
  • Symmetries and algebraic structures in quantum field theories
  • Soluble (sectors of) models of quantum gravity

 

Apart from the above topics, I am also interested in exciting developments in other related fields such as the quantum information/quantum gravity program, the nonperturbative bootstrap program, black holes and compact objects (from both the high energy physics and the astrophysics points of view), and curious connections between high energy physics and condensed matter physics.

 

 

 

Publications

My publications can be found here.

 

 

 

 

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Masahiro NozakiPhoto Nozaki Masahiro 2

 

 

 

 

Position

Tenure-Track AP, will join in 2020

View M. Nozaki's CV

 

 

 

Education

2010-2015  Ph.D., Yukawa Institute for Theoretical Physics, Kyoto University

2006-2010  Bachelor's degree, Department of Science and Technology, Keio University

 

 

 

Professional Experience

2020-          Tenure-Track AP, Kavli ITS, UCAS

2018-2020  RIKEN, Japan

2015-2018  Kadanoffff Center Fellow, The Kadanoffff Center for Theoretical Physics, The University of Chicago

2015           JSPS Postdoctoral fellow, Yukawa Institute for Theoretical Physics, Kyoto University

2014-2015  DC2, Yukawa Institute for Theoretical Physics, Kyoto University

 

 

 

 

Research Interests

I have been studying non-equilibrium physics and quantum gravity in terms of quantum entanglement:

We have proposed how to construct geometry in gravity dual of entanglement structure.

We have been studying the relation between Einstein eq. and constraint for entanglement entropy.

We have been studying thermal properties of entanglement entropy.

We have been studying how scrambling effect affects structure of entanglement.

Currently, I am strongly interested in properties of theories with strong scrambling effect in low energy limit. Also, I am strongly interested in the physics beyond AdS/CFT correspondence.

 

 

 

Selected Publications

1. Quantum vs. classical information: operator negativity as a probe of scrambling, J. Kudler-Flam, M. Nozaki, S. Ryu and M. T. Tan.

 

2. Signature of quantum chaos in operator entanglement in 2d CFTs, L. Nie, M. Nozaki, S. Ryu and M. T. Tan. arXiv:1812.00013 [hep-th]

 

3. Entanglement of local operators in large-N conformal field theories, P. Caputa, M. Nozaki and T. Takayanagi. PTEP 2014, 093B06 (2014)

 

4. Notes on Quantum Entanglement of Local Operators, M. Nozaki. JHEP 1410, 147 (2014)

 

5. Quantum Entanglement of Local Operators in Conformal Field Theories, M. Nozaki, T. Numasawa and T. Takayanagi. Phys. Rev. Lett. 112, 111602 (2014)

 

6. Dynamics of Entanglement Entropy from Einstein Equation, M. Nozaki, T. Numasawa, A. Prudenziati and T. Takayanagi. Phys. Rev. D 88, no. 2, 026012 (2013)

 

7. Holographic Local Quenches and Entanglement Density, M. Nozaki, T. Numasawa and T. Takayanagi. JHEP 1305, 080 (2013)

 

8. Thermodynamical Property of Entanglement Entropy for Excited States, J. Bhattacharya, M. Nozaki, T. Takayanagi and T. Ugajin. Phys. Rev. Lett. 110, no. 9, 091602 (2013)

 

9. Holographic Geometry of Entanglement Renormalization in Quantum Field Theories, M. Nozaki, S. Ryu and T. Takayanagi. JHEP 1210, 193 (2012)

 

 

 

 

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Sheng-Han Jiang (姜胜寒)

ShenghanJiang

 

 

 

 

Position

Tenure-Track AP, will join in 2020

view Shenghan Jiang's CV

 

 

Education

09/2012-06/2017  PhD in Theoretical Physics, Boston College, Chestnut Hill, MA

                              Advisor: Prof. Ying Ran

09/2008-07/2012  B.S., Department of Electronics, Peking University, Beijing, China

 

 

Professional Experience

09/2017-  Postdoctoral Scholar, Caltech IQIM, Pasadena, CA

 

 

 

Research Interest

I am a condensed matter theorist. I am interested in studying quantum mechanical systems with a large number of degrees of freedom and how the constituent degrees of freedom cooperate with each other to realize amazing emergent phenomena. One major direction of my work is to study electronic systems with strong interaction. Surprisingly, strongly correlated electrons in various experimental systems can sometimes (for example, fractional quantum Hall effect) be understood from collective degrees of freedom which are fundamentally different from electronic degrees of freedom. I am also interested in frustrated magnets where such fascinating physics may be realized.

My research topics include: topological order in strongly correlated systems; tensor network representation and numerical simulation; exotic quantum phase transitions.

 

 

Selected Publications

[1]Brenden Roberts, Shenghan Jiang, Olexei Motrunich, Deconfined quantum critical point in one dimension, Phys. Rev. B 99, 165143 (2019), arXiv:1904.00010

[2]Shenghan Jiang, Olexei Motrunich, Ising ferromagnet to valence bond solid transition in a one-dimensional spin chain: Analogies to deconfined quantum critical points, Phys. Rev. B 99, 075103 (2019), arXiv:1808.07981

[3]Xu Yang, Shenghan Jiang, Ashvin Vishwanath, Ying Ran, Dyonic Lieb-Schultz-Mattis theorem and symmetry protected topological phases in decorated dimer models, Phys. Rev. B 98, 125120 (2018) (Editors’ Suggestions), arXiv:1705.05421

[4]Shenghan Jiang, Ying Ran, Anyon condensation and a generic tensor-network construction for symmetry protected topological phases, Phys. Rev. B 95, 125107 (2017) (Editors’ Suggestions), arXiv:1611.07652

[5]Shenghan Jiang, Panjin Kim, Jung Hoon Han, Ying Ran, Competing Spin Liquid Phases in the S=1/2 Heisenberg Model on the Kagome Lattice, SciPost Phys. 7, 006 (2019), arXiv:1610.02024

[6]Meng Cheng, Zheng-Cheng Gu, Shenghan Jiang, Yang Qi, Exactly solvable models for symmetry-enriched topological phases, Phys. Rev. B 96, 115107 (2017) (Editors’ Suggestions), arXiv:1606.08482

[7]Panjin Kim, Hyunyong Lee, Shenghan Jiang, Brayden Ware, Chao-Ming Jian, Michael Zaletel, Jung Hoon Han, Ying Ran, Featureless quantum insulator on the honeycomb lattice, Phys. Rev. B 94, 064432 (2016), arXiv:1509.04358

[8]Shenghan Jiang and Ying Ran, Symmetric tensor networks and practical simulation algorithms to sharply identify classes of quantum phases distinguishable by short-range physics, Phys. Rev. B 92, 104414 (2015), arXiv:1505.03171

[9]Shenghan Jiang, Andrej Mesaros and Ying Ran, Chiral spin density wave, spin-charge-Chern liquid and d+id superconductivity in 1/4-doped correlated electronic systems on the honeycomb lattice, Phys. Rev. X 4, 031040 (2014), arXiv:1404.3452

[10]Shenghan Jiang, Andrej Mesaros and Ying Ran, Generalized modular transformations in 3+1D topologically ordered phases and triple linking invariant of loop braiding, Phys. Rev. X 4, 031048 (2014), arXiv:1404.1062

 

 

 

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Hua-Jia Wang (王华嘉)

Photo Huajia Wang

 

 

Position

Tenure-Track AP, will join in 2020

View H. J. Wang's CV

 

 

 

Education

2005 - 2009 B. S. in Mathematics and Physics, Washington University in St. Louis, MO, USA

2009 - 2015 PhD in Physics, Stanford University, Department of Physics, CA, USA

 

 

Position and Experiences

Postdoctoral Researcher, University of Illinois at Urbana-Champain (UIUC), (2015-2018)

Postdoctoral Scholar, Kavli Institute for Theoretical Physics (KITP), University of California, Santa Barbara (UCSB), (2018-present)

 

 

 

 

Research Interests

My current researches focus on using conformal field theory to understand quantum gravity through the AdS/CFT correspondence. In particular, I am interested in exploring the deep underlying origin of the correspondence and its connection to novel aspects of quantum field theories, such as entanglement structures and chaotic properties.  
 
In the past, I have also been interested in understanding non-relativistic quantum field theories; application of supersymmetric mirror symmetry to understand particle-vortex duality in three dimensions; as well as AdS/CMT.
 
 
 

 Selected Publications

  1. T. Faulkner, M. Li, H. Wang, “A modular toolkit for bulk reconstruction”,  JHEP 1904 119 (2019) 

  2. T. Faulkner, H. Wang, “Probing beyond ETH at large c”,  JHEP 1806 123 (2018) 

  3. S. Balakrishnan, T. Faulkner, Z. Khandker, H. Wang, “A General Proof of the Quantum Null Energy Condition”,  arXiv: 1706.09432 [hep-th]

  4. S. Kachru, M. Mulligan, G. Torroba, H. Wang, “Non-supersymmetric dualities from mir- ror symmetry”, Phys. Rev. Lett. 118, 011602 (2017) 

  5. T. Faulkner, R. Leigh, O. Parrikar, H. Wang, “Modular Hamiltonian for deformed half- spaces and the Averaged Null Energy Condition”, JHEP 09 038 (2016) 

  6. E. Shaghoulian, H. Wang, “Timelike BKL singularities and chaos in AdS/CFT”, Class. Quant. Grav V33, 12 (2016) 

  7. S. Raghu, G. Torroba, H. Wang, “Metallic quantum critical points with finite BCS cou- plings”, Phys. Rev. B 92, 205104 (2015) (editor’s suggestion) 

  8. S. Kachru, M. Mulligan, G. Torroba, H. Wang, “Mirror symmetry and the half-filled Landau level”, Phys. Rev. B 92, 235105 (2015) 

  9. A. Hook, S. Kachru, G. Torroba and H. Wang, “Emergent Fermi Surfaces, Fractionalization and Duality in Supersymmetric QED”, JHEP 08, 031 (2014) 

  10. X. Dong, S. Harrison, S. Kachru, G. Torroba and H. Wang, “Aspects of Holography for Theories with Hyperscaling Violation”,  JHEP 1206, 041, (2012) 

 

 

 

 

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Zheng Zhu (朱征)

ZhengZhu

 

Position 

Tenure-Track AP, will join in 2020

View Zheng Zhu's CV

 

 

Education

2006 - 2010 B. S. in Physics, Department for Intensive Instruction, Nanjing University

2010 - 2015 Ph.D. in Physics,  Institute for Advanced Study, Tsinghua University

 

 

Professional Experience

2015 - 2018 Postdoctoral Associate, Department of Physics, Massachusetts Institute of Technology (MIT) 

2018 - 2020 Post-Doctoral Fellow, Department of Physics, Harvard Unviersity

 

  

Research Interest

My research activities focus on quantum many-body problems in condensed matters especially strongly correlated electronic systems. One major direction is to understand the physics of exotic phases of matter and the phase transitions. The areas I studied include fractional quantum Hall systems, the doped Mott insulators, the frustrated magnetic systems and the heavy fermion systems. I am also interested in the computational condensed matter methods, including density matrix renormalization group (DMRG), exact diagonalization (ED), numerical renormalization group (NRG).

 

 

Selected Publications

  1. Zheng Zhu, D. N. Sheng, Inti Sodemann, Widely Tunable Quantum Phase Transition from Moore-Read to Composite Fermi Liquid in Bilayer Graphene, Phys. Rev. Lett. 124, 097604 (2020).
  2. Rong-Yang Sun*, Zheng Zhu*, Zheng-Yu Weng, Localization in a t-J type ladder with translational symmetry, Phys. Rev. Lett. 123, 016601 (2019).
  3. Zheng Zhu, D. N. Sheng, Liang Fu, Spin/orbital density wave and Mott insulator in two-orbital Hubbard model on honeycomb lattice, Phys. Rev. Lett. 123, 087602 (2019).
  4. Zheng Zhu, Shao-Kai Jian, D. N. ShengExciton Condensation in Quantum Hall Bilayers at Total Filling \nu_T=5, Phys. Rev. B 99, 201108(R) (2019).(Editors’ suggestion).
  5. Zheng Zhu, Itamar Kimchi, D.N. Sheng, Liang Fu, Robust non-Abelian spin liquid and a possible intermediate phase in the antiferromagnetic Kitaev model with magnetic field, Phys. Rev. B 97, 241110(R) (2018).
  6. Zheng Zhu, Liang Fu, D.N. Sheng, Numerical Study of Quantum Hall Bilayers at Total Filling \nu_T=1: A New Phase at Intermediate Layer Distances. Phys. Rev. Lett. 119, 177601 (2017).
  7. Inti Sodemann, Zheng Zhu, and Liang Fu, Quantum Hall ferroelectrics and nematics in multivalley systems, Phys. Rev. X 7, 041068 (2017).
  8. Zheng Zhu, Inti Sodemann, D.N. Sheng, Liang Fu, Anisotropy Driven Transition from Moore-Read State to Quantum Hall Stripes, Phys. Rev. B 95, 201116(R) (2017).
  9. Zheng Zhu, C. S. Tian, H. C. Jiang, Y. Qi, Jan Zaanen, and Z. Y. Weng, Charge modulation as fingerprints of phase-string triggered interference. Phys. Rev. B 92, 035113 (2015).
  10. Zheng Zhu, H. C. Jiang, D. N. Sheng and Z. Y. Weng, Nature of strong hole pairing in doped Mott antiferromagnets. Scientific Reports, 4, 5419 (2014).

 

 

 

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