6 citations · 26 across the 11 of their papers we have counts for
11 papers
Non-perturbatively slow spread of quantum correlations in non-resonant systems
Ben T. McDonough, Marius Lemm, Andrew Lucas
Strong disorder often has drastic consequences for quantum dynamics. This is best illustrated by the phenomenon of Anderson localization in non-interacting systems, where destructi…
Two classes of quantum spin systems that are gapped on any bounded-degree graph
Nicholas Hunter-Jones, Marius Lemm
We study translation-invariant quantum spin Hamiltonians on general graphs with non-commuting interactions either given by (i) a random rank- projection or (ii) Haar projectors.…
Uniform-in-temperature locality estimates for weakly interacting quantum systems
Arka Adhikari, Joscha Henheik, Marius Lemm +1
The locality of thermal quantum states has emerged as a key input for applications to thermalization, response theory, and efficient simulability. Locality is either captured by th…
Dynamics and equilibrium states of infinite systems of lattice bosons
Andreas Deuchert, Jonas Lampart, Marius Lemm
We consider the dynamics of systems of lattice bosons with infinitely many degrees of freedom. We show that their dynamics defines a group of automorphisms on a --algebra intr…
Enhanced Lieb-Robinson bounds for commuting long-range interactions
Marius Lemm, Tom Wessel
Recent works have revealed the intricate effect of long-range interactions on information transport in quantum many-body systems: In spatial dimensions, interactions decaying a…
On the critical finite-size gap scaling for frustration-free Hamiltonians
Marius Lemm, Angelo Lucia
We prove that the critical finite-size gap scaling for frustration-free Hamiltonians is of inverse-square type. The result covers general graphs embedded in and gener…
Symmetry-enhanced Lieb-Robinson bounds for a class of Bose-Hubbard type Hamiltonians
Tomotaka Kuwahara, Marius Lemm
Several recent works have derived Lieb-Robinson bounds (LRBs) for Bose-Hubbard-type Hamiltonians. For certain structured initial states, e.g., vacuum perturbations or near-stationa…
Out-of-time-ordered correlators of mean-field bosons via Bogoliubov theory
Marius Lemm, Simone Rademacher
Quantum many-body chaos concerns the scrambling of quantum information among large numbers of degrees of freedom. It rests on the prediction that out-of-time-ordered correlators (O…
On Lieb-Robinson bounds for a class of continuum fermions
Benjamin Hinrichs, Marius Lemm, Oliver Siebert
We consider the quantum dynamics of a many-fermion system in with an ultraviolet regularized pair interaction as previously studied in [M. Gebert, B. Nachtergaele, J.…
On the lowest-frequency bandgap of 1D phononic crystals
Javier González-Carbajal, Marius Lemm, Joaquin Garcia-Suarez
This manuscript puts forward and verifies an analytical approach to design phononic crystals that feature a bandgap at the lowest possible frequencies. This new approach is verifie…
Effective multi-scale approach to the Schrödinger cocycle over a skew shift base
Rui Han, Marius Lemm, Wilhelm Schlag
We prove a conditional theorem on the positivity of the Lyapunov exponent for a Schrödinger cocycle over a skew shift base with a cosine potential and the golden ratio as frequency…