3 papers
quant-ph2026
Real critical exponents from the -expansion in an interacting model with non-Hermitian anisotropy
Eduard Naichuk, Jeroen van den Brink, Flavio S. Nogueira
In quantum optics and condensed matter physics non-Hermitian phenomena are often studied under the assumption of an open physical system. However, there are examples of intrinsical…
cond-mat.str-el2025
Antiferromagnetism and spin excitations in a two-dimensional non-Hermitian Hatano-Nelson flux model
Eduard Naichuk, Ilya M. Eremin, Jeroen van den Brink +1
The one-dimensional Hatano-Nelson model with non-reciprocal hoppings is a prominent example of a relatively simple non-Hermitian quantum-mechanical system, which allows to study va…
quant-ph2024
Walking behavior induced by symmetry breaking in a non-Hermitian model with clock anisotropy
Eduard Naichuk, Jeroen van den Brink, Flavio S. Nogueira
A quantum system governed by a non-Hermitian Hamiltonian may exhibit zero temperature phase transitions that are driven by interactions, just as its Hermitian counterpart, raising…