312 citations · 5.8k across the 176 of their papers we have counts for
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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…
Enhancement of many-body quantum interference in chaotic bosonic systems
Peter Schlagheck, Denis Ullmo, Juan Diego Urbina +2
Although highly successful, the truncated Wigner approximation (TWA) leaves out many-body quantum interference between mean-field Gross-Pitaevskii solutions as well as other quantu…
Partial Fermionization---Spectral Universality in 1D Repulsive Bose Gases
Quirin Hummel, Juan Diego Urbina, Klaus Richter
Due to the vast growth of the many-body level density with excitation energy, its smoothed form is of central relevance for spectral and thermodynamic properties of interacting qua…
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…
Coherent Backscattering in Fock Space: a Signature of Quantum Many-Body Interference in Interacting Bosonic Systems
Thomas Engl, Julien Dujardin, Arturo Argüelles +3
We predict a generic manifestation of quantum interference in many-body bosonic systems resulting in a coherent enhancement of the average return probability in Fock space. This en…