3 papers
cond-mat.str-el2025
Non-Hermitian Numerical Renormalization Group: Solution of the non-Hermitian Kondo model
Phillip C. Burke, Andrew K. Mitchell
Non-Hermitian (NH) Hamiltonians describe open quantum systems, nonequilibrium dynamics, and dissipative processes. Although a rich range of single-particle NH physics has been unco…
quant-ph2025
Taking the temperature of quantum many-body scars
Phillip C. Burke, Shane Dooley
A quantum many-body scar is an eigenstate of a chaotic many-body Hamiltonian that exhibits two seemingly incongruous properties: its energy eigenvalue corresponds to a high tempera…
quant-ph2019
Non-Hermitian scattering on a tight-binding lattice
Phillip C. Burke, Jan Wiersig, Masudul Haque
We analyze the scattering dynamics and spectrum of a quantum particle on a tight-binding lattice subject to a non-Hermitian (purely imaginary) local potential. The reflection, tran…