Dynamics of quantum spin chains and multi-fermion excitation continua
O. Derzhko, T. Krokhmalskii, J. Stolze, G. M\"uller
TL;DR
This paper investigates the dynamic behavior of quantum spin-1/2 XX chains in a transverse magnetic field using Jordan-Wigner transformation, focusing on multi-fermion excitation continua and their signatures in the dynamic trimer structure factor.
Contribution
It provides a detailed analysis of four-fermion excitation continua in the XX chain, revealing their properties through the dynamic trimer structure factor.
Findings
Characterization of four-fermion excitation continua
Insights into dynamic trimer structure factor behavior
Application of Jordan-Wigner transformation to dynamic quantities
Abstract
We use the Jordan-Wigner representation to study dynamic quantities for the spin-1/2 XX chain in a transverse magnetic field. We discuss in some detail the properties of the four-fermion excitation continuum which is probed by the dynamic trimer structure factor.
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