59 citations · 221 across the 13 of their papers we have counts for
7 papers · 1 filter
Fractional Spin Quantum Hall Effect in Weakly Coupled Spin Chain Arrays
Even Thingstad, Pierre Fromholz, Flavio Ronetti +2
Topological magnetic insulators host chiral gapless edge modes. In the presence of strong interaction effects, the spin of these modes may fractionalize. Studying a 2D array of cou…
Long-range entanglement and topological excitations
Gianpaolo Torre, Jovan Odavić, Pierre Fromholz +2
Topological order comes in different forms, and its classification and detection is an important field of modern research. In this work, we show that the Disconnected Entanglement…
Topological entanglement properties of disconnected partitions in the Su-Schrieffer-Heeger model
Tommaso Micallo, Vittorio Vitale, Marcello Dalmonte +1
We study the disconnected entanglement entropy, , of the Su-Schrieffer-Heeger model. is a combination of both connected and disconnected bipartite entanglement entropies…
Symmetry-protected topological phases in the SU(N) Heisenberg spin chain: a Majorana-fermion approach
Pierre Fromholz, Philippe Lecheminant
The nature of symmetry-protected topological phases of Heisenberg spin chains in totally symmetric representations of rank N of the SU(N) group is investigated through a Majorana f…
Symmetry-protected topological phases in two-leg SU(N) spin ladder with unequal spins
Sylvain Capponi, Pierre Fromholz, Philippe Lecheminant +1
Chiral Haldane phases are examples of one-dimensional topological states of matter which are protected by projective SU() group (or its subgroup $\mathbb{Z}_N \times \mathbb{Z}_…
"Haldane" phases with ultracold fermionic atoms in double-well optical lattices
P. Fromholz, S. Capponi, P. Lecheminant +2
We propose to realize one-dimensional topological phases protected by SU() symmetry using alkali or alkaline-earth atoms loaded into a bichromatic optical lattice. We derive a r…
One-dimensional two-orbital SU(N) ultracold fermionic quantum gases at incommensurate filling: a low-energy approach
V. Bois, P. Fromholz, P. Lecheminant
We investigate the zero-temperature phase diagram of two-orbital SU(N) fermionic models at incommensurate filling which are directly relevant to strontium and ytterbium ultracold a…