Domain Wall in the Spin-S Quantum Ising Chain

TL;DR

This paper investigates the nature of domain walls in the spin-S quantum Ising chain at zero temperature, revealing quantum effects that cause delocalization and affect finite-size spectral scaling.

Contribution

It provides a detailed analysis of how quantum effects influence domain wall sharpness and spectral properties in the spin-S quantum Ising chain.

Findings

Quantum effects prevent sharp domain walls.

Eigenstates are delocalized due to quantum fluctuations.

Finite-size spectrum scaling reflects the absence of a characteristic domain wall length.

Abstract

Domain walls in the spin S quantum Ising chain at zero temperature are considered. Quantum effects prevent the walls from being sharp and delocalize the exact eigenstates. The absence of a characteristic length of the domain walls is reflected in the finite-size scaling of the spectrum of the Hamiltonian.