87 citations · 100 across the 5 of their papers we have counts for
5 papers
Emergence of a Renormalized Expansion in Quenched Critical Many-Body Systems
Benjamin Geiger, Juan Diego Urbina, Klaus Richter
We consider the fate of expansions in unstable many-body quantum systems, as realized by a quench across criticality, and show the emergence of as a renorma…
Classical, semiclassical and quantum signatures of quantum phase transitions in a (pseudo) relativistic many-body system
Maximilian Nitsch, Benjamin Geiger, Klaus Richter +1
We identify a (pseudo) relativistic spin-dependent analogue of the celebrated quantum phase transition driven by the formation of a bright soliton in attractive one-dimensional bos…
Reversible quantum information spreading in many-body systems near criticality
Quirin Hummel, Benjamin Geiger, Juan Diego Urbina +1
Quantum chaotic interacting -particle systems are assumed to show fast and irreversible spreading of quantum information on short (Ehrenfest) time scales . Here we…
Nonlocal pair correlations in Lieb-Liniger gases: A unified nonperturbative approach from weak degeneracy to high temperatures
Benjamin Geiger, Quirin Hummel, Juan Diego Urbina +1
We present analytical results for the nonlocal pair correlations in one-dimensional bosonic systems with repulsive contact interactions that are uniformly valid from the classical…
Semiclassics in a system without classical limit: The few-body spectrum of two interacting bosons in one dimension
Benjamin Geiger, Juan-Diego Urbina, Quirin Hummel +1
We present a semiclassical study of the spectrum of a few-body system consisting of two short-range interacting bosonic particles in one dimension, a particular case of a general c…