Quantum Monte Carlo study with partons finds evidence for a continuous second-order deconfined transition where both Néel and d-wave orders vanish simultaneously.
Quantum Transition between an Antiferromagnetic Mott Insulator and $d_{x^2 - y^2}$ Superconductor in Two Dimensions
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abstract
We consider a Hubbard model on a square lattice with an additional interaction, $W$, which depends upon the square of a near-neighbor hopping. At half-filling and a constant value of the Hubbard repulsion, increasing the strength of the interaction $W$ drives the system from an antiferromagnetic Mott insulator to a $d_{x^2 -y^2}$ superconductor. This conclusion is reached on the basis of zero temperature quantum Monte Carlo simulations on lattice sizes up to $16 \times 16$.
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Reviews the FL* theory for cuprates using ancilla layer models and SU(2) gauge theories to explain pseudogap hole pockets of area p/8, Fermi arcs, and transitions to d-wave superconductivity and Fermi liquid behavior.
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Deconfined criticality between an antiferromagnetic insulator and a nodal d-wave superconductor: a quantum Monte Carlo study
Quantum Monte Carlo study with partons finds evidence for a continuous second-order deconfined transition where both Néel and d-wave orders vanish simultaneously.
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Fractionalized Fermi liquids and the cuprate phase diagram
Reviews the FL* theory for cuprates using ancilla layer models and SU(2) gauge theories to explain pseudogap hole pockets of area p/8, Fermi arcs, and transitions to d-wave superconductivity and Fermi liquid behavior.
- Lectures on insulating and conducting quantum spin liquids