Critical drag as a mechanism for resistivity
Dominic Else and T. Senthil. 6/29/2021. “Critical drag as a mechanism for resistivity”. arXivAbstract
 Critical drag is thus a mechanism for resistivity that, unlike conventional mechanisms, is unrelated to broken symmetries. We furthermore argue that an emergent symmetry that has the appropriate mixed anomaly with electric charge is in fact an inevitable consequence of compressibility in systems with lattice translation symmetry. Critical drag therefore seems to be the only way (other than through irrelevant perturbations breaking the emergent symmetry, that disappear at the renormalization group fixed point) to get nonzero resistivity in such systems. Finally, we present a very simple and concrete model -- the "Quantum Lifshitz Model" -- that illustrates the critical drag mechanism as well as the other considerations of the paper.
Prediction of Toric Code Topological Order from Rydberg Blockade
Ruben Verresen, Mikhail D. Lukin, and Ashvin Vishwanath. 2021. “Prediction of Toric Code Topological Order from Rydberg Blockade.” Phys. Rev. X. Publisher's Version
Christopher T. Olund, Maxwell Block, Snir Gazit, John McGreevy, and Norman Y. Yao. 2020. “Adiabatic ground state preparation in an expanding lattice.” Phys. Rev. B, 101, Pp. 155152.
Liang Kong, Tian Lan, Xiao-Gang Wen, Zhi-Hao Zhang, and Hao Zheng. 2020. “Algebraic higher symmetry and categorical symmetry – a holographic and entanglement view of symmetry.” arXiv:2005.14178.
Darshan G. Joshi and Subir Sachdev. 2020. “Anomalous density fluctuations in a random $t$-$J$ model.” arXiv:2006.13947.
Kyle Aitken and Guy Gur-Ari. 2020. “On the asymptotics of wide networks with polynomial activations.” arXiv:2006.06687.
Harley D. Scammell, Mathias S. Scheurer, and Subir Sachdev. 2020. “Bilocal quantum criticality.” arXiv:2006.01834.
Xiao-Chuan Wu, Yichen Xu, Hao Geng, Chao-Ming Jian, and Cenke Xu. 2020. “Boundary criticality of topological quantum phase transitions in two-dimensional systems.” Phys. Rev. B, 101, Pp. 174406.
Ying-Hsuan Lin, David Meltzer, Shu-Heng Shao, and Andreas Stergiou. 2020. “Bounds on Triangle Anomalies in (3+1)d.” Phys. Rev., D101, Pp. 125007.
Zachary M. Raines, Andrew A. Allocca, Mohammad Hafezi, and Victor M. Galitski. 2020. “Cavity Higgs polaritons.” Phys. Rev. Research, 2, Pp. 013143. Publisher's Version
Eslam Khalaf, Shubhayu Chatterjee, Nick Bultinck, Michael P. Zaletel, and Ashvin Vishwanath. 2020. “Charged Skyrmions and Topological Origin of Superconductivity in Magic Angle Graphene.” arXiv:2004.00638.
Cécile Repellin and T Senthil. 2020. “Chern bands of twisted bilayer graphene: fractional Chern insulators and spin phase transition.” Physical Review Research, 2, Pp. 023238.
Liang Kong, Tian Lan, Xiao-Gang Wen, Zhi-Hao Zhang, and Hao Zheng. 2020. “Classification of topological phases with finite internal symmetries in all dimensions.” arXiv:2003.08898.
Yaodong Li, Xiao Chen, Andreas W. W. Ludwig, and Matthew P. A. Fisher. 2020. “Conformal invariance and quantum non-locality in hybrid quantum circuits.” arXiv e-prints, Pp. arXiv:2003.12721.
Andreas Elben, Benoît Vermersch, Rick Van Bijnen, Christian Kokail, Tiff Brydges, Christine Maier, Manoj K. Joshi, Rainer Blatt, Christian F. Roos, and Peter Zoller. 2020. “Cross-Platform Verification of Intermediate Scale Quantum Devices.” Physical Review Letters, 124, Pp. 010504.Abstract
We describe a protocol for cross-platform verification of quantum simulators and quantum computers. We show how to measure directly the overlap Tr[$\rho$1$\rho$2] and the purities Tr[$\rho$1,22], and thus a fidelity of two, possibly mixed, quantum states $\rho$1 and $\rho$2 prepared in separate experimental platforms. We require only local measurements in randomized product bases, which are communicated classically. As a proof of principle, we present the measurement of experiment-theory fidelities for entangled 10-qubit quantum states in a trapped ion quantum simulator.
Ya-Hui Zhang and Subir Sachdev. 2020. “Deconfined criticality and ghost Fermi surfaces at the onset of antiferromagnetism in a metal.” arXiv:arXiv:2006.01140.
Daniel Ben-Zion, John McGreevy, and Tarun Grover. 2020. “Disentangling quantum matter with measurements.” Phys. Rev. B, 101, Pp. 115131.
Hao Geng. 2020. “Distance Conjecture and De-Sitter Quantum Gravity.” Phys. Lett. B, 803, Pp. 135327.
Efim B. Rozenbaum, Leonid A. Bunimovich, and Victor Galitski. 2020. “Early-Time Exponential Instabilities in Nonchaotic Quantum Systems.” Phys. Rev. Lett., 125, Pp. 014101. Publisher's Version
Ya-Hui Zhang and Ashvin Vishwanath. 2020. “Electrical detection of spin liquids in double moire layers.” arXiv:2005.12925.