76 citations · 252 across the 13 of their papers we have counts for
13 papers
Taming two interacting particles with disorder
Diana Thongjaomayum, Alexei Andreanov, Thomas Engl +1
We compute the scaling properties of the localization length of two interacting particles in a one-dimensional chain with diagonal disorder, and the connectivity properties o…
Non-Gibbs states on a Bose-Hubbard lattice
Alexander Yu. Cherny, Thomas Engl, Sergej Flach
We study the equilibrium properties of the repulsive quantum Bose-Hubbard model at high temperatures in arbitrary dimensions, with and without disorder. In its microcanonical setti…
The semiclassical propagator in Fock space: dynamical echo and many-body interference
Thomas Engl, Juan Diego Urbina, Klaus Richter
We present a semiclassical approach to many-body quantum propagation in terms of coherent sums over quantum amplitudes associated with the solutions of corresponding classical nonl…
Breakdown of Anderson localization in the transport of Bose-Einstein condensates through one-dimensional disordered potentials
Julien Dujardin, Thomas Engl, Peter Schlagheck
We study the transport of an interacting Bose--Einstein condensate through a 1D correlated disorder potential. We use for this purpose the truncated Wigner method, which is, as we…
Periodic Mean-Field Solutions and the Spectra of Discrete Bosonic Fields: Trace Formula for Bose-Hubbard Models
Thomas Engl, Juan Diego Urbina, Klaus Richter
We consider the many-body spectra of interacting bosonic quantum fields on a lattice in the semiclassical limit of large particle number . We show that the many-body density of…
Aspects of integrability in a classical model for non-interacting fermionic fields
Simon Grosse-Holz, Thomas Engl, Klaus Richter +1
In this work we investigate the issue of integrability in a classical model for noninteracting fermionic fields. This model is constructed via classical-quantum correspondence obta…
Boson Sampling as Canonical Transformation: A semiclassical approach in Fock space
Thomas Engl, Juan Diego Urbina, Quirin Hummel +1
We show that a theory of complex scattering between many-body (Fock) states can be constructed such that its classical limit is a canonical transformation thus encoding quantum int…
Describing many-body bosonic waveguide scattering with the truncated Wigner method
Julien Dujardin, Thomas Engl, Juan Diego Urbina +1
We consider quasi-stationary scattering of interacting bosonic matter waves in one-dimensional waveguides, as they arise in guided atom lasers. We show how the truncated Wigner (tW…
The semiclassical propagator in fermionic Fock space
Thomas Engl, Peter Plößl, Juan Diego Urbina +1
We present a rigorous derivation of a semiclassical propagator for anticommuting (fermionic) degrees of freedom, starting from an exact representation in terms of Grassmann variabl…
Many-Body Spin Echo
Thomas Engl, Juan Diego Urbina, Klaus Richter +1
We predict a universal echo phenomenon present in the time evolution of many-body states of interacting quantum systems described by Fermi-Hubbard models. It consists of the cohere…
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…
Conductance and Thermopower of Ballistic Andreev Cavities
Thomas Engl, Jack Kuipers, Klaus Richter
When coupling a superconductor to a normal conducting region the physical properties of the system are highly affected by the superconductor. We will investigate the effect of one…
The density of states of chaotic Andreev billiards
Jack Kuipers, Thomas Engl, Gregory Berkolaiko +3
Quantum cavities or dots have markedly different properties depending on whether their classical counterparts are chaotic or not. Connecting a superconductor to such a cavity leads…