https://doi.org/10.1140/epjb/e2002-00277-7
CPN solitons in quantum Hall systems
School of Physical Sciences, Jawaharlal Nehru University, New
Delhi 110067, India
Corresponding author: a doug0700@mail.jnu.ac.in
Received:
17
November
2001
Published online:
2
October
2002
We present here an elementary pedagogical introduction to CPN solitons in quantum Hall systems. We begin with a brief introduction to both CPN models and to quantum Hall (QH) physics. We then focus on spin and layer-spin degrees of freedom in QH systems and point out that these are in fact CPN fields for N=1 and N=3. Excitations in these degrees of freedom will be shown to be topologically non-trivial soliton solutions of the corresponding CPN field equations. We conclude with a brief summary of our own recent work in this area, done with Sankalpa Ghosh.
PACS: 73.43.Cd – Theory and modeling / 12.39.Dc – Skyrmions / 05.45.Yv – Solitons
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2002
