254 citations · 529 across the 18 of their papers we have counts for
18 papers
Macroscopic Zero-Mode Manifold Isolated by Quantum Chaos
Cheryne Jonay, Kun W. Kim, Frank Pollmann +1
Chaotic many-body spectra are expected to densely fill their energy window. We show that constrained spin chains with chiral symmetry evade this expectation by hosting an exponenti…
Quantum trajectory simulation of two-dimensional non-equilibrium steady states with a trapped ion quantum processor
Anna Dalmasso, Arash Jafarizadeh, Julian Boesl +8
Digital quantum computers offer a promising route for studying complex many-body systems that are otherwise inaccessible by their classical counterparts. Capabilities including mid…
Dynamical dimer structure factor of the triangular Heisenberg antiferromagnet
Markus Drescher, Laurens Vanderstraeten, Roderich Moessner +2
The dynamical dimer structure factor is an observable probing spin-singlet excitations of quantum magnets distinct from those commonly studied by the spin structure factor. We repo…
Measuring Anyonic Exchange Phases Using Two-Dimensional Coherent Spectroscopy
Nico Kirchner, Wonjune Choi, Frank Pollmann
Identifying experimental signatures of anyons, which exhibit fractional exchange statistics, remains a central challenge in the study of two-dimensional topologically ordered syste…
Spectral Functions of an Extended Antiferromagnetic Heisenberg Model on the Triangular Lattice
Markus Drescher, Laurens Vanderstraeten, Roderich Moessner +1
We study an extended spin- antiferromagnetic Heisenberg model on the triangular lattice, which includes both nearest- and next-nearest-neighbor interactions, as well as a scal…
Phases of Interacting Fibonacci Anyons on a Ladder at Half-Filling
Nico Kirchner, Roderich Moessner, Frank Pollmann +1
Two-dimensional many-body quantum systems can exhibit topological order and support collective excitations with anyonic statistics different from the usual fermionic or bosonic one…
Unconventional Spin Dynamics and Supersolid Excitations in the Triangular-Lattice XXZ Model
Rafael Flores-Calderón, Roderich Moessner, Frank Pollmann
Motivated by recent experiments, we investigate the spin-1/2 XXZ model on the triangular lattice with strong Ising anisotropy, combining large-scale numerical simulations and analy…
Localized Fock Space Cages in Kinetically Constrained Models
Cheryne Jonay, Frank Pollmann
We investigate a mechanism for non-ergodic behavior in many-body quantum systems arising from destructive interference, leading to localization in Fock space. Drawing parallels wit…
Dynamical freezing in the thermodynamic limit: the strongly driven ensemble
Asmi Haldar, Anirban Das, Sagnik Chaudhuri +5
The ergodicity postulate, a foundational pillar of Gibbsian statistical mechanics predicts that a periodically driven (Floquet) system in the absence of any conservation law heats…
Tensor Network Python (TeNPy) version 1
Johannes Hauschild, Jakob Unfried, Sajant Anand +27
TeNPy (short for 'Tensor Network Python') is a python library for the simulation of strongly correlated quantum systems with tensor networks. The philosophy of this library is to a…
Genuine topological Anderson insulator from impurity induced chirality reversal
Avedis Neehus, Frank Pollmann, Johannes Knolle
We investigate a model of Dirac fermions with Haldane type mass impurities which open a global topological gap even in the dilute limit. Surprisingly, we find that the chirality of…
Observation of Hilbert-space fragmentation and fractonic excitations in two-dimensional Hubbard systems
Daniel Adler, David Wei, Melissa Will +7
The relaxation behaviour of isolated quantum systems taken out of equilibrium is among the most intriguing questions in many-body physics. Quantum systems out of equilibrium typica…
Realization of Hilbert Space Fragmentation and Fracton Dynamics in 2D
Melissa Will, Roderich Moessner, Frank Pollmann
We propose the strongly tilted Bose-Hubbard model as a natural platform to explore Hilbert-space fragmentation (HSF) and fracton dynamics in two-dimensions, in a setup and regime r…
The ballistic to diffusive crossover in a weakly-interacting Fermi gas
Jerome Lloyd, Tibor Rakovszky, Frank Pollmann +1
Charge and energy are expected to diffuse in interacting systems of fermions at finite temperatures, even in the absence of disorder, with the interactions inducing a crossover fro…
Enhanced many-body localization in a kinetically constrained model
Karl Royen, Suman Mondal, Frank Pollmann +1
In the study of the thermalization of closed quantum systems, the role of kinetic constraints on the temporal dynamics and the eventual thermalization is attracting significant int…
Unveiling the S=3/2 Kitaev Honeycomb Spin Liquids
Hui-Ke Jin, W. M. H. Natori, F. Pollmann +1
The S=3/2 Kitaev honeycomb model (KHM) is a quantum spin liquid (QSL) state coupled to a static Z gauge field. Employing an SO(6) Majorana representation of spin 3/2's, we find…
Stark many-body localization
M. Schulz, C. A. Hooley, R. Moessner +1
We consider spinless fermions on a finite one-dimensional lattice, interacting via nearest-neighbor repulsion and subject to a strong electric field. In the non-interacting case, d…
Topological Magnons in Kitaev Magnets at High Fields
P. A. McClarty, X. -Y. Dong, M. Gohlke +4
We study the Kitaev-Heisenberg-- model that describes the magnetism in strong spin-orbit coupled honeycomb lattice Mott insulators. In strong magnetic fields that br…