547 citations · 2.8k across the 92 of their papers we have counts for
92 papers
Topological analysis of the complex SSH model using the quantum geometric tensor
Eve Cheng, Murray T. Batchelor, Danny Cocks
This paper presents two methods for topological analysis of the complex Hermitian Su-Schrieffer-Heeger (SSH) model using the quantum geometric tensor: Berry phase and topological d…
Entanglement entropy for scale-invariant states: universal finite-size scaling
Huan-Qiang Zhou, Qian-Qian Shi, Ian P. McCulloch +1
A universal finite system-size scaling analysis of the entanglement entropy is presented for highly degenerate ground states arising from spontaneous symmetry breaking with type-B…
Goldstone modes and the golden spiral in the ferromagnetic spin-1 biquadratic model
Huan-Qiang Zhou, Qian-Qian Shi, Ian P. McCulloch +1
Ferromagnetic ground states have often been overlooked in comparison to seemingly more interesting antiferromagnetic ground states. However, both the physical and mathematical stru…
Exceptional Points in the Baxter-Fendley Free Parafermion Model
Robert A. Henry, Murray T. Batchelor
Certain spin chains, such as the quantum Ising chain, have free fermion spectra which can be expressed as the sum of decoupled two-level fermionic systems. Free parafermions are a…
PT-symmetric quantum Rabi model
Xilin Lu, Hui Li, Jia-Kai Shi +4
In this work, we explore the PT-symmetric quantum Rabi model, which describes a PT-symmetric qubit coupled to a quantized light field. By employing the adiabatic approximation (AA)…
Comment on `Parameter-dependent unitary transformation approach for quantum Rabi model'
Daniel Braak, Murray T. Batchelor, Qing-Hu Chen
We discuss the elementary errors in D.G. Zhang's [New. J. Phys. 23, 093014 (2021)] claimed exact solution of the quantum Rabi model. The erroneous solution is seen to be nothing mo…