94 citations · 274 across the 11 of their papers we have counts for
11 papers
Controlled Loop Expansion for the Topological Heavy Fermion Model
Yaar Vituri, Erez Berg
We develop a controlled theoretical framework for the topological heavy fermion model relevant to magic-angle twisted bilayer graphene, where low density conduction electrons hybri…
Symmetry-determined generalized ferromagnetism in multi-valley electron fluids
Vladimir Calvera, Erez Berg, Steven A. Kivelson
Quantum electronic fluids with spin and valley degrees of freedom have a correlation driven tendency to flavor polarization (generalized ferromagnetism). To first order in the long…
Charge and pair density waves in a spin and valley-polarized system at a Van-Hove singularity
Avigail Gil, Erez Berg
We study a single component (i.e., single valley, spin-polarized) two-dimensional electron gas with symmetry tuned to a Van-Hove (VH) singularity. Generically, there may b…
Theory of Coulomb driven nematicity in a multi-valley two-dimensional electron gas
Vladimir Calvera, Agnes Valenti, Sebastian D. Huber +2
The properties of a two-dimensional electron gas (2DEG) in a semiconductor host with two valleys related by an underlying rotational symmetry are studied using Hartree-Fock (…
Measuring the imaginary time dynamics of quantum materials
S. Lederer, D. Jost, T. Böhm +3
Theoretical analysis typically involves imaginary-time correlation functions. Inferring real-time dynamical response functions from this information is notoriously difficult. Howev…
Effects of longer-range interactions on unconventional superconductivity
S. Raghu, E. Berg, A. V. Chubukov +1
We analyze the effect of the non-vanishing range of electron-electron repulsion on the mechanism of unconventional superconductivity. We present asymptotically exact weak-coupling…