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• W4376872551 abstract "Early studies proposed a connection between cuprate superconductivity and fractionalized spin liquid states. But the low temperature phase diagram is dominated by states without fractionalization, with a competition between superconductivity and charge-ordered states which break translational symmetry. Our theory uncovers novel features associated with a particular spin-liquid presumed to underlie the pseudogap metal, and shows that it has multiple nearly-degenerate instabilities to confinement of fractionalized excitations, leading to antiferromagnetism, $d$-wave superconductivity, and/or charge order. Our theory provides routes to resolving a number of open puzzles on the cuprate phase diagram. The spin liquid is described by a SU(2) gauge theory of $N_f=2$ massless fundamental Dirac fermions, has an emergent SO(5)$_f$ global symmetry, and is presumed to confine at low energies to the N'eel state. At non-zero doping (or smaller Hubbard repulsion at half-filling) we argue that confinement occurs via the Higgs condensation of bosonic chargons carrying fundamental SU(2) gauge charges moving in $pi$ flux. At half-filling, the low energy Higgs sector has $N_b=2$ relativistic bosons with a possible emergent SO(5)$_b$ global symmetry describing rotations between a $d$-wave superconductor, period-2 charge stripes, and the time-reversal breaking `$d$-density wave' state. We propose a deconfined quantum critical point between a confining state which breaks SO(5)$_f$ and a confining state which breaks SO(5)$_b$. The pattern of symmetry breaking within both SO(5)s is determined by terms likely irrelevant at the critical point, which can be chosen to obtain a transition between N'eel order and $d$-wave superconductivity. A similar theory applies at non-zero doping and large $U$, with longer-range couplings of the chargons leading to charge order with longer periods." @default.
• W4376872551 created "2023-05-18" @default.
• W4376872551 creator A5002160556 @default.
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• W4376872551 creator A5041649350 @default.
• W4376872551 creator A5051487932 @default.
• W4376872551 creator A5078211587 @default.
• W4376872551 date "2023-05-16" @default.
• W4376872551 modified "2023-10-04" @default.
• W4376872551 title "A model of <i>d</i> -wave superconductivity, antiferromagnetism, and charge order on the square lattice" @default.
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• W4376872551 doi "https://doi.org/10.1073/pnas.2302701120" @default.
• W4376872551 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/37192166" @default.
• W4376872551 hasPublicationYear "2023" @default.
• W4376872551 type Work @default.
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• W4376872551 hasAuthorship W4376872551A5002160556 @default.
• W4376872551 hasAuthorship W4376872551A5006211525 @default.
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• W4376872551 hasAuthorship W4376872551A5041649350 @default.
• W4376872551 hasAuthorship W4376872551A5051487932 @default.

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