activity
20052026
most citedA non-Hermitian symmetric Bose-Hubbard model: eigenvalue rings from unfolding higher-order exceptional points

228 citations · 2.2k across the 42 of their papers we have counts for

collaborators

43 papers

quant-ph2026

Imaginary Barrier, Real Transfer: Non-Hermitian Dynamical Tunnelling

Eva-Maria Graefe

We identify a non-Hermitian counterpart of dynamical tunnelling induced by a localised absorbing region in a symmetric confining potential. The absorbing region, described by an im…

quant-ph2026

Action on the Sphere: An Interfering Mean-Field Propagator for the Bose-Hubbard Dimer

Elana F Todd-Miller, Eva-Maria Graefe

The Bose-Hubbard system has been studied extensively both theoretically and experimentally, in particular in the context of ultracold atomic gases in optical lattices. Even in the…

quant-ph2026

Phase-space measurements and decoherence for angular momentum systems

Dorje C. Brody, Eva-Maria Graefe, Rishindra Melanathuru

The monitoring of the three independent components of the angular momentum (or spin) of a quantum system by its environment that does not isolate any preferred orientation is model…

nlin.CD2024

Intensity landscapes in elliptical and oval billiards with a circular absorbing region

Katherine Holmes, Joseph Hall, Eva-Maria Graefe

Billiard models of single particles moving freely in two-dimensional regions enclosed by hard walls, have long provided ideal toy models for the investigation of dynamical systems…

quant-ph2024★ 9 cited

Phase-space measurements, decoherence and classicality

Dorje C. Brody, Eva-Maria Graefe, Rishindra Melanathuru

The emergence of classical behaviour in quantum theory is often ascribed to the interaction of a quantum system with its environment, which can be interpreted as environmental moni…

quant-ph2022★ 11 cited

Husimi dynamics generated by non-Hermitian Hamiltonians

Katherine Holmes, Wasim Rehman, Simon Malzard +1

The dynamics generated by non-Hermitian Hamiltonians are often less intuitive than those of conventional Hermitian systems. Even for models as simple as a complexified harmonic osc…