منابع مشابه
Fermions at unitarity and Haldane exclusion statistics
– We consider a gas of neutral fermionic atoms at ultra-low temperatures, with the attractive interaction tuned to Feshbach resonance. We calculate, the variation of the chemical potential and the energy per particle as a function of temperature by assuming the system to be an ideal gas obeying the Haldane-Wu fractional exclusion statistics. Our results for the untrapped gas compare favourably ...
متن کاملStatistics of Composite Fermions in Quantum Hall Effect
The high Landau level filling fractions 5/2, 7/3 and 8/3 are interpreted by using the angular momentum model. It is found that for the odd number of flux quanta, the quasiparticles called the " composite fermions " are fermions but for even number-, the quasiparticles are a mixture of bosons and fermions.Therefore, the theory of " composite fermions " is internally inconsistent.
متن کاملPhonon Scattering of Composite Fermions
We study the principal aspects of the interaction between acoustic phonons and two-dimensional electrons in quantizing magnetic elds corresponding to even denominator fractions. Using the composite fermion approach we derive the vertex of the electron-phonon coupling mediated by the Chern-Simons gauge eld. We estimate acoustic phonon contribution to electronic mobility, phonon-drag thermopower,...
متن کاملState : Magnetized Composite Fermions
The Fermionic Chern-Simons approach has had remarkable success in the description of quantum Hall states at even denominator filling fractions ν = 1 2m . In this paper we review a number of recent works concerned with modeling this state as a Landau-Silin Fermi liquid. We will then focus on one particular problem with constructing such a Landau theory that becomes apparent in the limit of high ...
متن کاملInteracting particles as neither bosons nor fermions: A microscopic origin for fractional exclusion statistics
We study a quantum liquid of particles interacting via a long-ranged two-body potential in three dimensions where the original particles are supposed to be either bosons or fermions. We show that such liquids exhibit the nature of a quantum liquid with fractional exclusion statistics. In both quantum liquids enlarged pseudo-Fermi surfaces are formed from bosons and fermions, although with diffe...
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ژورنال
عنوان ژورنال: Physica E: Low-dimensional Systems and Nanostructures
سال: 2002
ISSN: 1386-9477
DOI: 10.1016/s1386-9477(01)00258-2