93 citations · 725 across the 45 of their papers we have counts for
7 papers · 1 filter
Extreme statistics as a probe of the superfluid to Bose-glass Berezinskii-Kosterlitz-Thouless transition
Jeanne Colbois, Natalia Chepiga, Shaffique Adam +2
Recent studies of delocalization-localization transitions in disordered quantum chains have highlighted the role of rare, chain-breaking events that favor localization, in particul…
Commensurate-incommensurate Mott transition without magnetic field: emergence of nematic Luttinger liquid in XXZ chain
Julien Fitouchi, Natalia Chepiga
We investigate the zero-magnetization phase diagram of a spin-1/2 chain with competing ferromagnetic nearest-neighbor and antiferromagnetic next-nearest-neighbor exchange couplings…
Confinement, deconfinement, and bound states in the spin- and spin- generalizations of the Majumdar--Ghosh chain
Aman Sharma, Mithilesh Nayak, Natalia Chepiga +2
We investigate the nature of low-energy excitations in a spin chain with antiferrmomagnetic nearest-neighbor , next-nearest-neighbor , and three-site interactions u…
Excitations and dynamical structure factor of spin- and spin- Heisenberg spin chains
Aman Sharma, Mithilesh Nayak, Natalia Chepiga +1
We study the dynamical structure factor of the frustrated spin- - Heisenberg chains, with particular focus on the partially dimerized phase that emerges between two…
Infinite randomness criticality and localization of the floating phase in arrays of Rydberg atoms trapped with non-perfect tweezers
Jose Soto-Garcia, Natalia Chepiga
Chains of Rydberg atoms have emerged as a powerful platform for exploring low-dimensional quantum physics. This success originates from the precise control of lattice geometries pr…
Exact zero modes in interacting Majorana X- and Y-junctions
Bowy M. La Rivière, Rik Mulder, Natalia Chepiga
We report the emergence of exact zero modes in junctions of two, three and four short interacting Majorana wires, equivalent to a chain with an impurity bond, Y- and X- junctions r…
Deconfined quantum criticality in a frustrated Haldane chain with single-ion anisotropy
Niels T. Pronk, Bowy M. La Rivière, Natalia Chepiga
We report a phase diagram of the antiferromagnetic spin-1 chain with nearest-neighbor Heisenberg and three-site interactions in the presence of single-ion anisotropy. We show that…