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Hopf Term for a Two-Dimensional Electron Gas: Comment to Reply to Comment | | G.E. Volovik
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10 Nov 1997 | | Subject: | Mesoscopic Systems and Quantum Hall Effect | cond-mat.mes-hall | | Abstract: | In our Comment (G.E. Volovik and V.M. Yakovenko, Phys. Rev. Lett. 79 (1997) 3792) to the Letter by W. Apel and Yu.A. Bychkov (Phys. Rev. Lett. 78 (1997) 2188) we questioned the derivation of the Hopf term in the hydrodynamic action for the Skyrmion dynamics in QHE. Our main argument was that the description in terms of Euler angles used by Apel and Bychkov was potentially dangerous since these angles were ill-defined. The Reply (W. Apel and Yu.A. Bychkov, Phys. Rev. Lett. 79 (1997) 3792) to our Comment confirmed our apprehension. | | Source: | arXiv, cond-mat/9711076 | | Services: | Forum | Review | PDF | Favorites | |
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