Sachdev-Ye-Kitaev models and beyond: Window into non-Fermi liquids
This is a review of the Sachdev-Ye-Kitaev (SYK) model of compressible quantum many-
body systems without quasiparticle excitations, and its connections to various theoretical …
body systems without quasiparticle excitations, and its connections to various theoretical …
Quantum phases driven by strong correlations
It has long been thought that strongly correlated systems are adiabatically connected to their
non-interacting counterpart. Recent developments have highlighted the fallacy of this …
non-interacting counterpart. Recent developments have highlighted the fallacy of this …
Emergent self-duality in a long-range critical spin chain: From deconfined criticality to first-order transition
Over the past few decades, tremendous efforts have been devoted to understanding self-
duality at the quantum critical point, which enlarges the global symmetry and constrains the …
duality at the quantum critical point, which enlarges the global symmetry and constrains the …
Linear resistivity and Sachdev-Ye-Kitaev (SYK) spin liquid behavior in a quantum critical metal with spin-1/2 fermions
“Strange metals” with resistivity depending linearly on temperature T down to low T have
been a long-standing puzzle in condensed matter physics. Here, we consider a lattice model …
been a long-standing puzzle in condensed matter physics. Here, we consider a lattice model …
Dynamic electron correlations with charge order wavelength along all directions in the copper oxide plane
In strongly correlated systems the strength of Coulomb interactions between electrons,
relative to their kinetic energy, plays a central role in determining their emergent quantum …
relative to their kinetic energy, plays a central role in determining their emergent quantum …
Fixed point annihilation for a spin in a fluctuating field
A Nahum - Physical Review B, 2022 - APS
A quantum spin impurity coupled to a gapless free field (the Bose-Kondo model) can be
represented as a (0+ 1)-dimensional field theory with long-range-in-time interactions that …
represented as a (0+ 1)-dimensional field theory with long-range-in-time interactions that …
Excitation spectra of quantum matter without quasiparticles. I. Sachdev-Ye-Kitaev models
We study the low-frequency spectra of complex Sachdev-Ye-Kitaev models at general
densities. The analysis applies also to SU (M) magnets with random exchange at large M …
densities. The analysis applies also to SU (M) magnets with random exchange at large M …
Deconfined criticality and ghost Fermi surfaces at the onset of antiferromagnetism in a metal
We propose a general theoretical framework, using two layers of ancilla qubits, for
deconfined criticality between a Fermi liquid with a large Fermi surface and a pseudogap …
deconfined criticality between a Fermi liquid with a large Fermi surface and a pseudogap …
Linear in temperature resistivity in the limit of zero temperature from the time reparameterization soft mode
The most puzzling aspect of the 'strange metal'behavior of correlated electron compounds is
that the linear in temperature resistivity often extends down to low temperatures, lower than …
that the linear in temperature resistivity often extends down to low temperatures, lower than …
Planckian metal at a doping-induced quantum critical point
We numerically study a model of interacting spin-1/2 electrons with random exchange
coupling on a fully connected lattice. This model hosts a quantum critical point separating …
coupling on a fully connected lattice. This model hosts a quantum critical point separating …