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TitleCharge and spin fractionalization beyond the Luttinger-liquid paradigm
Author(s)Moreno, Alexander
Muramatsu, Alejandro
Carmelo, José Manuel Pereira
Issue date4-Feb-2013
PublisherAmerican Physical Society
JournalPhysical Review B: Condensed Matter and Materials Physics
Abstract(s)It is well established that at low energies one-dimensional (1D) fermionic systems are described by the Luttinger-liquid (LL) theory, which predicts phenomena such as spin-charge separation and charge fractionalization into chiral modes. Here we show through the time evolution of an electron injected into a 1D t-J model, obtained with time-dependent density matrix renormalization group, that a further fractionalization of both charge and spin takes place beyond the hydrodynamic limit. Its dynamics can be understood at the supersymmetric point (J = 2t) in terms of the excitations of the Bethe-ansatz solution. Furthermore we show that fractionalization with similar characteristics extends to the whole region corresponding to a repulsive LL.
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AccessRestricted access (UMinho)
Appears in Collections:CDF - CEP - Artigos/Papers (with refereeing)

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