PERIMETER INSTITUTE RECORDED SEMINAR ARCHIVE
Subscribe to podcastTensor Networks: from Simulations to Holography III
Organizer(s): Lena Funcke Michal Heller Karl Jansen Stefan Kuhn Volker Schomerus Sukhbinder Singh
Collection URL: http://pirsa.org/C20034
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 | Tensor networks for LGT: beyond 1D Speaker(s): Mari-Carmen Banuls
Abstract: The suitability of tensor network ansatzes for the description of physically relevant states in one dimensional lattice gauge theories (LGT) has been demonstrated in the last years by a large amount of systematic studies, including abelian and non-abelian LGTs, and including scenarios where traditio... read more
Date: 16/11/2020 - 8:00 am
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 | Tensor networks for critical systems Speaker(s): Frank Verstraete
Abstract: In this talk I will give an overview of tensor network approaches to critical systems. I will discuss entanglement scaling laws, show how PEPS can simulate systems with Fermi surfaces, and present some results for simulating systems in the continuum.
Date: 16/11/2020 - 9:00 am
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 | Tensor network models of AdS/qCFT Speaker(s): Jens Eisert
Abstract: "AdS/CFT endows gravity in anti-de Sitter (AdS) spacetime with a dual description in certain conformal field theories (CFTs) with matching symmetries. Tensor networks on regular discretizations of AdS space provide natural toy models of AdS/CFT, but break the continuous bulk symmetries. In this talk... read more
Date: 16/11/2020 - 1:00 pm
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 | Ancilla qubit wavefunctions for the pseudogap metal phase of the cuprates Speaker(s): Subir Sachdev
Abstract: There is now significant experimental evidence that the physics of the underdoped cuprates is controlled by a metallic state with a Fermi surface whose volume does not equal the Luttinger value. However, there has been no proposed wavefunction for such a state for electrons in a single band. I will ... read more
Date: 16/11/2020 - 2:00 pm
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 | Quantum Cellular Automata, Tensor Networks, and Area Laws Speaker(s): Ignacio Cirac
Abstract: Quantum Cellular Automata are unitary maps that preserve locality and respect causality. I will show that in one spatial dimension they correspond to matrix product unitary operators, and that one can classify them in the presence of symmetries, giving rise to phenomenon analogous to symmetry protec... read more
Date: 17/11/2020 - 8:00 am
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 | Fun with replicas and holographic tensor networks Speaker(s): Michael Walter
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Date: 17/11/2020 - 9:00 am
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 | A tensor-network approach to fixed-point models of topological phases Speaker(s): Andreas Bauer
Abstract: "I will introduce a tensor-network based language for classifying topological phases via fixed-point models. The "models" will be tensor networks formalizing a discrete Euclidean path integral living in a topological space-time, and can be obtained from Hamiltonian models by Trotterizing the imagina... read more
Date: 17/11/2020 - 1:00 pm
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 | Custom Fermionic Codes for Quantum Simulation Speaker(s): Riley Chien
Abstract:
Date: 17/11/2020 - 1:15 pm
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 | Quantum Extremal Islands Made Easy: Complexity on the brane Speaker(s): Shan-Ming Ruan
Abstract: We examine holographic complexity in the doubly holographic model to study quantum extremal islands. We focus on the holographic complexity=volume (CV) proposal for boundary subregions in the island phase. Exploiting the Fefferman-Graham expansion of the metric and other geometric quantities near th... read more
Date: 17/11/2020 - 1:30 pm
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 | Noise-robustness and experimental data of wavelet-DMERA preparation for critical Ising ground state Speaker(s): Troy Sewell
Abstract: Multi-scale tensor networks offer a way to efficiently represent ground states of critical systems and may be adapted for state-preparation on a quantum computer. The tensor network for a single scale specifies a quantum channel whose fixed-point is a subregion of the approximate critical ground sta... read more
Date: 17/11/2020 - 1:45 pm
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