179 citations · 422 across the 6 of their papers we have counts for
6 papers
Quantum Ising chain with boundary dephasing
Naoyuki Shibata, Hosho Katsura
We study the quantum Ising chain with boundary dephasing. By doubling the Hilbert space, the model is mapped to the Su-Schrieffer-Heeger model with imaginary chemical potential at…
Error bounds for constrained dynamics in gapped quantum systems: Rigorous results and generalizations
Zongping Gong, Nobuyuki Yoshioka, Naoyuki Shibata +1
In arXiv:2001.03419 we introduce a universal error bound for constrained unitary dynamics within a well-gapped energy band of an isolated quantum system. Here, we provide the full…
Universal Error Bound for Constrained Quantum Dynamics
Zongping Gong, Nobuyuki Yoshioka, Naoyuki Shibata +1
It is well known in quantum mechanics that a large energy gap between a Hilbert subspace of specific interest and the remainder of the spectrum can suppress transitions from the qu…
Onsager's Scars in Disordered Spin Chains
Naoyuki Shibata, Nobuyuki Yoshioka, Hosho Katsura
We propose a class of non-integrable quantum spin chain models that exhibit quantum many-body scars even in the presence of disorder. With the use of the so-called Onsager symmetry…
Dissipative quantum Ising chain as a non-Hermitian Ashkin-Teller model
Naoyuki Shibata, Hosho Katsura
We study a quantum Ising chain with tailored bulk dissipation, which can be mapped onto a non-Hermitian Ashkin-Teller model. By exploiting the Kohmoto-den Nijs-Kadanoff transformat…
Dissipative spin chain as a non-Hermitian Kitaev ladder
Naoyuki Shibata, Hosho Katsura
We derive exact results for the Lindblad equation for a quantum spin chain (one-dimensional quantum compass model) with dephasing noise. The system possesses doubly degenerate none…