184 citations · 2.1k across the 37 of their papers we have counts for
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Anisotropy induces non-Fermi-liquid behavior and nematic magnetic order in three-dimensional Luttinger semimetals
Igor Boettcher, Igor F. Herbut
We illuminate the intriguing role played by spatial anisotropy in three-dimensional Luttinger semimetals featuring quadratic band touching and long-range Coulomb interactions. We o…
Quasi-long-range order in trapped two-dimensional Bose gases
Igor Boettcher, Markus Holzmann
We study the fate of algebraic decay of correlations in a harmonically trapped two-dimensional degenerate Bose gas. The analysis is inspired by recent experiments on ultracold atom…
Dimensional crossover of nonrelativistic bosons
Soeren Lammers, Igor Boettcher, Christof Wetterich
We investigate how confining a transverse spatial dimension influences the few- and many-body properties of non-relativistic bosons with pointlike interactions. Our main focus is o…
Superconducting quantum criticality in three-dimensional Luttinger semimetals
Igor Boettcher, Igor F. Herbut
We study a simple model of three-dimensional fermions close to a quadratic band touching point, built from the celebrated Luttinger single-particle Hamiltonian and an attractive co…