PIRSA:20110017

Ancilla qubit wavefunctions for the pseudogap metal phase of the cuprates

Sachdev, S. (2020). Ancilla qubit wavefunctions for the pseudogap metal phase of the cuprates. Perimeter Institute. https://pirsa.org/20110017

Sachdev, Subir. Ancilla qubit wavefunctions for the pseudogap metal phase of the cuprates. Perimeter Institute, Nov. 16, 2020, https://pirsa.org/20110017 

          @misc{ pirsa_PIRSA:20110017,
            doi = {10.48660/20110017},
            url = {https://pirsa.org/20110017},
            author = {Sachdev, Subir},
            keywords = {Quantum Fields and Strings},
            language = {en},
            title = {Ancilla qubit wavefunctions for the pseudogap metal phase of the cuprates},
            publisher = {Perimeter Institute},
            year = {2020},
            month = {nov},
            note = {PIRSA:20110017 see, \url{https://pirsa.org}}
          }

Subir Sachdev Harvard University

DOI 10.48660/20110017
Collection
Talk Type Conference
Subject

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 describe a wavefunction which involves tracing over 2 layers of ancilla qubits. The proposal also leads to a gauge theory for the transition to the conventional Fermi liquid state found at large doping.