Spinons vs. psinons


by csopi
Tags: psinons, spinons
csopi
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#1
Sep30-13, 02:13 AM
P: 77
Hi,

I've recently read an introductory review of Bethe ansatz for antiferromagnetic spin-1/2 Heisenberg chains : cond-mat: 9809163. I understand that the elementary excitations above the ground state in absence of magnetic field are spinons.

The article claims that when a finite magnetic field is applied the excitations can be described as psinons, which are 1/2 spin particles (like spinons) and they also represented as holes among the Bethe-quantum numbers (like spinons). However I couldn't really tell what is the exact difference between these two particles.

Can somebody explain this?
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atyy
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#2
Sep30-13, 08:39 AM
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Is it http://arxiv.org/abs/cond-mat/9809163? I couldn't find where they use the word "psinon", although they use "spinon".
jtbell
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#3
Sep30-13, 09:16 AM
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Also, a Google search for "psinon" turns up nothing remotely related to condensed-matter physics, at least on the first three pages of hits.

csopi
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#4
Sep30-13, 10:13 AM
P: 77

Spinons vs. psinons


Sorry guys, wrong link. It is actually in the third part:
http://arxiv.org/abs/cond-mat/0008018

Here are some more articles, conserning this topic:
http://prb.aps.org/abstract/PRB/v66/i5/e054405
http://prb.aps.org/abstract/PRB/v62/i22/p14871_1


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