Topological order, emergent gauge fields, and Fermi surface reconstruction

S Sachdev - Reports on Progress in Physics, 2018 - iopscience.iop.org
This review describes how topological order associated with the presence of emergent
gauge fields can reconstruct Fermi surfaces of metals, even in the absence of translational …

Quantitative theory of magnetic interactions in solids

A Szilva, Y Kvashnin, EA Stepanov, L Nordström… - Reviews of Modern …, 2023 - APS
This review addresses the method of explicit calculations of interatomic exchange
interactions of magnetic materials. This involves exchange mechanisms normally referred to …

A model of d-wave superconductivity, antiferromagnetism, and charge order on the square lattice

M Christos, ZX Luo, H Shackleton… - Proceedings of the …, 2023 - National Acad Sciences
We describe the confining instabilities of a proposed quantum spin liquid underlying the
pseudogap metal state of the hole-doped cuprates. The spin liquid can be described by a …

Triangular antiferromagnetism on the honeycomb lattice of twisted bilayer graphene

A Thomson, S Chatterjee, S Sachdev, MS Scheurer - Physical Review B, 2018 - APS
We present the electronic band structures of states with the same symmetry as the three-
sublattice planar antiferromagnetic order of the triangular lattice. Such states can also be …

Unifying description of competing orders in two-dimensional quantum magnets

XY Song, C Wang, A Vishwanath, YC He - Nature communications, 2019 - nature.com
Quantum magnets provide the simplest example of strongly interacting quantum matter, yet
they continue to resist a comprehensive understanding above one spatial dimension. We …

Deconfined quantum criticality of nodal -wave superconductivity, Néel order, and charge order on the square lattice at half-filling

M Christos, H Shackleton, S Sachdev, ZX Luo - Physical Review Research, 2024 - APS
We consider a SU (2) lattice gauge theory on the square lattice, with a single fundamental
complex fermion and a single fundamental complex boson on each lattice site. Projective …

Confinement transition of ℤ2 gauge theories coupled to massless fermions: Emergent quantum chromodynamics and SO(5) symmetry

S Gazit, FF Assaad, S Sachdev… - Proceedings of the …, 2018 - National Acad Sciences
We study a model of fermions on the square lattice at half-filling coupled to an Ising gauge
theory that was recently shown in Monte Carlo simulations to exhibit Z 2 topological order …

Duality between (2+ 1) d quantum critical points

T Senthil, DT Son, C Wang, C Xu - Physics Reports, 2019 - Elsevier
Duality refers to two equivalent descriptions of the same theory from different points of view.
Recently there has been tremendous progress in formulating and understanding possible …

From spinon band topology to the symmetry quantum numbers of monopoles in Dirac spin liquids

XY Song, YC He, A Vishwanath, C Wang - Physical Review X, 2020 - APS
The interplay of symmetry and topology has been at the forefront of recent progress in
quantum matter. Here, we uncover an unexpected connection between band topology and …

Adventure in Topological Phase Transitions in -D: Non-Abelian Deconfined Quantum Criticalities and a Possible Duality

Z Bi, T Senthil - Physical Review X, 2019 - APS
Continuous quantum phase transitions beyond the conventional paradigm of fluctuations of
a symmetry-breaking order parameter are challenging for theory. These phase transitions …