A weak-coupling tensor cross interpolation impurity solver for nonequilibrium DMFT approximates integrands in tensor-train form to mitigate the sign problem, matching exact benchmarks and reproducing thermalization in the Hubbard model.
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Numerical nonequilibrium DMFT simulations show η-pairing is robust to particle-hole asymmetry in large-gap Mott insulators at low effective temperatures and can occur in photo-doped metals with low-energy population inversion.
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Weak-coupling tensor cross interpolation impurity solver for nonequilibrium dynamical mean-field theory
A weak-coupling tensor cross interpolation impurity solver for nonequilibrium DMFT approximates integrands in tensor-train form to mitigate the sign problem, matching exact benchmarks and reproducing thermalization in the Hubbard model.
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$\eta$-pairing in metallic and particle-hole asymmetric systems
Numerical nonequilibrium DMFT simulations show η-pairing is robust to particle-hole asymmetry in large-gap Mott insulators at low effective temperatures and can occur in photo-doped metals with low-energy population inversion.