Fragility of Charge Order Near an Antiferromagnetic Quantum Critical Point
Fragility of Charge Order Near an Antiferromagnetic Quantum Critical Point
We investigate the interplay between charge order and superconductivity near an antiferromagnetic quantum critical point using sign-problem-free Quantum Monte Carlo simulations. We establish that, when the electronic dispersion is particle-hole symmetric, the system has an emergent SU(2) symmetry that implies a degeneracy between d-wave superconductivity and charge order with d-wave …