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- W2052871755 abstract "In this article, we shall focus on the collective dynamics of the fermions in a $nu = 1$ quantum Hall droplet. Specifically, we propose to look at the quantum Hall ferromagnet. In this system, the electron spins are ordered in the ground state due to the exchange part of the Coulomb interaction and the Pauli exclusion principle. The low energy excitations are ferromagnetic magnons. In order to obtain an effective Lagrangian for these magnons, we shall introduce bosonic collective coordinates in the Hilbert space of many-fermion systems. These collective coordinates describe a part of the fermionic Hilbert space. Using this technique, we shall interpret the magnons as bosonic collective excitations in the Hilbert space of the many-electron Hall system. Furthermore, by considering a Hall droplet of finite extent, we shall also obtain the effective Lagrangian governing the spin collective excitations at the edge of the sample." @default.
- W2052871755 created "2016-06-24" @default.
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- W2052871755 date "2001-12-28" @default.
- W2052871755 modified "2023-10-16" @default.
- W2052871755 title "Bulk and edge excitations of aν=1Hall ferromagnet" @default.
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- W2052871755 doi "https://doi.org/10.1103/physrevb.65.035320" @default.
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