Quick Navigation

Overview Topics Abstract Importance Paper Tools References Reactions Discussion Publication Related

Topics

Quantum Simulation Quantum Thermodynamics

Ground state and persistent oscillations in the quantum East model

arXiv
Authors: Adway Kumar Das, Achilleas Lazarides

Year

2026

Paper ID

18137

Status

Preprint

Abstract Read

~2 min

Abstract Words

112

Citations

N/A

Abstract

For the 1D quantum East model with open boundaries, we show that in the limit s → -infty, the ground state is accurately captured by a simple spin-coherent product state. We further identify a low-entanglement excited eigenstate that differs from the ground state only by a π-rotation of the boundary spin, remaining well approximated by a spin-coherent state. For a range of -infty<s<0, the edge-coherent product state overlaps with two eigenstates separated by a size-independent energy gap, leading to persistent coherent oscillations of both global and local observables in the thermodynamic limit. These oscillations originate from boundary physics and are distinct from quantum many-body scars or hypercube-like Fock-space mechanisms.

Why This Paper Matters

  • This paper contributes to the Quantum Simulation research area in the Quantum Articles archive.
  • It adds a 2026 reference point for readers tracking recent quantum research.
  • For the 1D quantum East model with open boundaries, we show that in the limit s -> -infty, the ground state is accurately captured by a simple spin-coherent product state.

Paper Tools

Become a member to use research tools

Sign in to open papers, visit source links, share, cite, compare, copy DOI links, request category corrections, and build your reading list.

Become a member Sign in
Show Paper arXiv Publisher Share Cite This Paper Copy URL Compare Copy DOI Add to Reading List Category Correction Request

References & Citation Signals

[1] DOI https://doi.org/arXiv:2602.23422 [2] arXiv https://arxiv.org/abs/2602.23422 [3] Publisher https://arxiv.org/abs/2602.23422

Local Citation Graph (Related-Paper Links)

Current Paper #18137 #78846 Analog quantum simulation of Sh... #78815 Finite Quantum Engineering Ther... #78810 Secure Quantum Handshakes: Quan... #78802 Quantum Co-Design of Inhomogene...

External citation index: OpenAlex citation signal

Community Reactions

Quick sentiment from readers on this paper.

Score: 0
Likes: 0 Dislikes: 0

Sign in to react to this paper.

Discussion & Reviews (Moderated)

Average Rating: 0.0 / 5 (0 ratings)

No written reviews yet.