135 citations · 359 across the 4 of their papers we have counts for
4 papers
Preformed pairs in flat Bloch bands
Murad Tovmasyan, Sebastiano Peotta, Long Liang +2
In a flat Bloch band the kinetic energy is quenched and single particles cannot propagate since they are localized due to destructive interference. Whether this remains true in the…
Effective theory and emergent symmetry in the flat bands of attractive Hubbard models
Murad Tovmasyan, Sebastiano Peotta, Päivi Törmä +1
In a partially filled flat Bloch band electrons do not have a well defined Fermi surface and hence the low-energy theory is not a Fermi liquid. Neverethless, under the influence of…
Geometry induced pair condensation
Murad Tovmasyan, Evert van Nieuwenburg, Sebastian Huber
We study a one-dimensional model of interacting bosons on a lattice with two flat bands. Regular condensation is suppressed due to the absence of a well defined minimum in the sing…
On Nonlinear Higher Spin Curvature
Ruben Manvelyan, Karapet Mkrtchyan, Werner Rühl +1
We present the first nonlinear term of the higher spin curvature which is covariant with respect to deformed gauge transformations that are linear in the field. We consider in deta…