Work

On the Two-Magnon Bound States for the Quantum Heisenberg Chain with Variable Range Exchange

Year: 1997

Type: article

Abstract: The spectrum of finite-difference two-magnon operator is investigated for quantum S=1/2 chain with variable range exchange of the form h(j-k)∝ sinh -2a(j-k). It is found that usual bound state appears for some values of the total pseudomomentum of two magnons as for the Heisenberg chain with nearest-neighbor spin interaction. Besides this state, a new type of bound state with oscillating wave function appears at larger values of the total pseudomomentum.

Source: Modern Physics Letters B

DOI: 10.1142/s0217984997000554

Authors: J. Dittrich, V. I. Inozemtsev

Institutions: Czech Academy of Sciences, Czech Academy of Sciences, Nuclear Physics Institute, Joint Institute for Nuclear Research

Language: English

Topic: Quantum many-body systems

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W2036626205

FWCI:

Cites: 1

Cited by: 2

Related to: 10