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From local observables in a single eigenstate to parent Hamiltonians

Determining a local Hamiltonian from a single eigenstate Authors: Xiao-Liang Qi and Daniel Ranard arXiv:1712.01850 Recommended with a commentary by Ashvin Vishwanath, Harvard University. |View Commentary| JCCM_January_2018_02

Closing the Gap in Band Theory

Filling-Enforced Gaplessness in Band Structures of the 230 Space Groups Authors: Haruki Watanabe, Hoi Chun Po, Michael P. Zaletel, and Ashvin Vishwanath Phys. Rev. Lett. 117, 096404 (2016) Recommended with a commentary by Liang Fu, Massachusetts Institute of Technology. |View Commentary| JCCM_August_2017_01

A Dirac Spin Liquid May Fill the Gap in the Kagome Antiferromagnet

1. Signatures of Dirac cones in a DMRG study of the Kagome Heisenberg model. Authors: Yin- Chen He, Michael P. Zaletel, Masaki Oshikawa, and Frank Pollmann. arXiv:1611.06238 2. Competing Spin Liquid Phases in the S=1/2 Heisenberg Model on the Kagome Lattice. Authors: Shenghan Jiang, Panjin Kim, Jung Hoon Han, Ying Ran. arXiv:1610.02024 Recommended with a […]

Emergent technology based on Fermi-arcs?

1. Transport evidence for Fermi-arc-mediated chirality transfer in the Dirac semimetal Cd3As2. Author: P. J. W. Moll, N. L. Nair, T. Helm, A. C. Potter, I. Kimchi, A. Vishwanath, J. G. Analytis. Nature 535, 266 (2016) 2. Current at a Distance and Resonant Transparency in Weyl Semimetals. Authors: Y. Baum, E. Berg, S. A. Parameswaran, […]

Measuring Entanglement by Swapping Quantum Twins

Measuring entanglement entropy through the interference of quantum many-body twins. Authors: Rajibul Islam, Ruichao Ma, Philipp M. Preiss, M. Eric Tai, Alexander Lukin, Matthew Rispoli, Markus Greiner. arXiv:1509.01160 Recommended with a commentary by Ashvin Vishwanath, UC Berkeley. |View Commentary| JCCM_JANUARY_2016_03

Composite fermions meet Dirac

1.Is the composite fermion a Dirac particle? Authors:Dam Thanh Son. arXiv:1502.03446(2015) 2.Dual Dirac liquid on the surface of the electron topological insulator. Authors:Chong Wang and T. Senthil. arXiv:1505.05141(2015) 3.Particle-vortex duality of 2D Dirac fermion from electric-magnetic duality of 3D topological insulators. Authors:Max A. Metlitski and Ashvin Vishwanath. arXiv:1505.05142(2015) 4.Half-filled Landau level, topological insulator surfaces, and […]

Experimental Observation of Weyl Semimetals

1.Experimental observation of Weyl points. Authors: Ling Lu, Zhiyu Wang, Dexin Ye, Lixin Ran, Liang Fu, John D. Joannopoulos, Marin Soljacic. arXiv:1502.03438 2.Experimental realization of a topological Weyl semimetal phase with Fermi arc surface states in TaAs. Authors: S.Y. Xu, I. Belopolski, N. Alidoust, M. Neupane, C. Zhang, R. Sankar, S.M. Huang, C.C. Lee, G. […]

On Non-Fermi liquid phases due to Goldstone boson exchange

Criterion for stability of Goldstone Modes and Fermi Liquid behavior in a metal with broken symmetry Authors: Haruki Watanabe and Ashvin Vishwanath arXiv: 1404.3728 Recommended with a commentary by Jörg Schmalian,Karlsruhe Institute of Technology |View Commentary| JCCM_SEPTEMBER_2014_03

Quantum Entanglement sheds new light on an old problem

Chiral Symmetry Breaking, Deconfinement and Entanglement Monotonicity Authors: Tarun Grover arXiv:1211.1392 Recommended with a commentary by Ashvin Vishwanath, UC Berkeley |View Commentary| JCCM_JANUARY_2014_02

Fractionalized two-dimensional states on surfaces of three dimensional topological insulators

1. A Time-Reversal Invariant Topological Phase at the Surface of a 3D Topological Insulator Authors: Parsa Bonderson, Chetan Nayak, Xiao-Liang Qi J. Stat. Mech. (2013) P09016 2. Gapped Symmetry Preserving Surface-State for the Electron Topological Insulator Authors: Chong Wang, Andrew C. Potter, T. Senthil Phys. Rev. B 88, 115137 (2013), arXiv:1306.3223 3. Symmetry Enforced Non-Abelian […]

Quantum Orders from Strong Disorder

1. Localization protected quantum order. Authors: David A. Huse, Rahul Nandkishore, Vadim Oganesyan, Arijeet Pal, and S.L.Sondhi. Phys. Rev. B 88, 014206 (2013), arXiv:1304.1158. Recommended with a commentary by Ashvin Vishwanath, UC Berkeley |View Commentary (PDF)| JCCM_JULY_2013_02

SYMMETRY PROTECTED TOPOLOGICAL PHASES OF 3D BOSONS

1. Physics of three dimensional bosonic topological insulators: Surface Deconfined Criticality and Quantized Magnetoelectric Effect. Authors: Ashvin Vishwanath, T. Senthil, arXiv:1209.3058. 2. Three dimensional Symmetry Protected Topological Phase close to Antiferromagnetic Neel order. Author: Cenke Xu, arXiv:1209.4399. Recommended and a Commentary by M.P.A. Fisher, UC Santa Barbara | View Commentary (pdf) |. JCCM_FEBRUARY2013_01

Identifying a spin liquid on the Kagome lattice using quantum entanglement

1. Identifying Topological Order by Entanglement Entropy. Authors: Hong-Chen Jiang, Zhenghan Wang, and Leon Balents. arXiv:1205.4289v1 2. Nature of the Spin Liquid Ground State of the S = 1/2 Kagome Heisenberg Model. Authors: Stefan Depenbrock, Ian P. McCulloch, and Ulrich Schollwoeck. arXiv:1205.4858v1 Recommended with a commentary by Ashvin Vishwanath, UC Berkeley |View Commentary (PDF)| JCCM_JUNE_2012_03

And now, Weyl fermions

Topological semimetal and Fermi-arc surface states in the electronic structure of pyrochlore iridates. Authors: X. Wan, A.M. Turner, A. Vishwanath and S.Y. Savrasov. Phys. Rev. B 83, 205101 (2011) Recommended with a commentary by Vivek Aji, University of California Riverside |View Commentary (pdf)|

Large Artificial Magnetic Fields in Strained Graphene

Strain-Induced PseudoMagnetic Fields Greater Than 300 Tesla in Graphene Nanobubbles, Authors: N. Levy, S. A. Burke, K. L. Meaker, M. Panlasigui, A. Zettl, F. Guinea, A. H. Castro Neto and M. F. Crommie, Science 30 July 2010: Vol. 329 no. 5991 pp. 544-547 Recommended with a Commentary by Ashvin Vishwanath, UC Berkeley, CA |View Commentary […]

Metallic Thermal Conductivity in a Magnetic Insulator

1. Highly Mobile Gapless Excitations in a Two-Dimensional Candidate Quantum Spin Liquid Authors: M. Yamashita, N. Nakata, Y. Senshu, M. Nagata, H. M. Yamamoto, R. Kato, T. Shibauchi and Y. Matsuda Science 328, 1246 (2010) Recommended with a commentary by Ashvin Vishwanath, University of California at Berkeley, | View Commentary (PDF) | JCCM_NOVEMBER2010_03

Observation of universal bound state spectrum near a magnetic quantum critical point

Quantum Criticality in an Ising Chain: Experimental Evidence for Emergent E8 Symmetry Authors:  R. Coldea, D. A. Tennant, E. M. Wheeler, E. Wawrzynska, D. Prabhakaran, M. Telling, K. Habicht, P. Smeibidl, K. Kiefer Science 327, 177 (2010) Recommended with a commentary by Ashvin Vishwanath, UC Berkeley |  View Commentary (pdf) | JCCM_March2010_02

Observation of a Lattice of Skyrmions in a Magnetic Metal

1. Skyrmion Lattice in a Chiral Magnet ” Authors: S. Mhlbauer, B. Binz, F. Jonietz, C. Pfleiderer, A. Rosch, A. Neubauer, Georgii, P. Boni arXiv:0902.1968 [Science 323, 915 (2009)] 2. Topological Hall effect in the A-phase of MnSi” Authors: A. Neubauer, C. Pfleiderer, B. Binz, A. Rosch, R. Ritz, P. G. Niklowitz, Boni, arXiv:0902.1933 3. […]

Topological Band Insulators in two and three dimensions in spin-orbit coupled systems

A. Quantum Spin Hall Effect in Graphene Authors: A. C. Kane and G. Mele http://arXiv.org/abs/cond-mat/0411737 Phys. Rev. Lett. 95, 226801 (2005) B. Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells Authors: A. Bernevig, T. Hughes, S.C. Zhang http://arXiv.org/abs/cond-mat/0611399 Science, 314, 1757 (2006) C. Topological invariants of time-reversal-invariant band structures Authors: J. […]

A Quantum Antiferromagnet on the Kagome Lattice

A Quantum Antiferromagnet on the Kagome Lattice Featured papers: 1. Spin Dynamics of the spin-1/2 Kagome lattice antiferromagnet ZnCu3 (OH)6 Cl2 . Authors: J.S. Helton, K. Matan, M.P. Shores, E.A. Nytko, B.M. Bartlett, Y. Yoshida, Y. Takano, A. Suslov, Y. Qiu, J.-H. Chung, D.G. Nocera, Y.S. Lee [Phys. Rev. Lett. 98, 107204 (2007)] http://arxiv.org/abs/cond-mat/0610539 2. […]

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