2 papers
cond-mat.str-el2026
Exchange-frustrated quadrupoles on the honeycomb lattice: Flavor-wave spectra, classical degeneracies and parton constructions
Partha Sarker, Han Ma, Urban F. P. Seifert
We study the quadrupolar Kitaev model, an honeycomb-lattice model with frustrated bond-dependent quadrupolar interactions. Using complementary methods and expanding around co…
cond-mat.str-el2025
Fixed Point Stability Switches from Attractive to Repulsive at 2d Pomeranchuk/Stoner Instabilities via Field-Theoretical RG
Han Ma
We study an interacting two-flavor fermionic system via field-theoretical functional renormalization group (RG). Each flavor, labeled by , has a dispersion of $E^{\pm}=c k^{2Î…