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Phenomenon that occurs when a microscopically complicated system (such as a solid) behaves as if it contained different weakly interacting particles in free space.
The critical fluctuations responsible for the enhancement of the quasiparticle masses appear to weaken the superconducting state.
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This is the first observation of a three-quasiparticle chiral structure and establishes the primarily geometric nature of this phenomenon.
3
Quantum oscillations of the magnetostriction allow identifying the band-specific quasiparticle masses which by far exceed the band-structure derived masses.
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This shrinking is accompanied by a strong increase in the quasiparticle effective mass as x is tuned toward the maximum T{c}.
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In the usual case where both spin-orbit split bands are occupied, the intrinsic spin-Hall conductivity has a universal value for zero quasiparticle spectral broadening.
Usage of collective excitation in inglés
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A key example is a quantum crystal composed of coherent superpositions of different, spatially ordered configurations of collectiveexcitations.