72 citations · 168 across the 4 of their papers we have counts for
Showing 2013Show all
2 papers · 1 filter
quant-ph2013★ 48 cited
Exceptional and regular spectra of a generalized Rabi model
Michael Tomka, Omar El Araby, Mikhail Pletyukhov +1
We study the spectrum of the generalized Rabi model in which co- and counter-rotating terms have different coupling strengths. It is also equivalent to the model of a two-dimension…
cond-mat.supr-con2013★ 6 cited
Order parameter, correlation functions and fidelity susceptibility for the BCS model in the thermodynamic limit
Omar El Araby, Dionys Baeriswyl
The exact ground state of the reduced BCS Hamiltonian is investigated numerically for large system sizes and compared with the BCS ansatz. A "canonical'' order parameter is found t…