Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2004-09-22
Physics
Condensed Matter
Strongly Correlated Electrons
Contribution to Ian Kogan memorial volume, World Scientific
Scientific paper
We briefly review some examples of confinement which arise in condensed matter physics. We focus on two instructive cases: the off-critical Ising model in a magnetic field, and an array of weakly coupled (extended) Hubbard chains in the Wigner crystal phase. In the appropriate regime, the elementary excitations in these 1+1 and quasi-one-dimensional systems are confined into `mesons'. Although the models are generically non-integrable, quantum mechanics and form factor techniques yield valuable information.
Bhaseen M. J.
Tsvelik Alexei M.
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