Phase separation in the Edwards model. Ejima, S., Sykora, S., Becker, K. W., & Fehske, H. Physical Review B, 86(15):155149, October, 2012.
Phase separation in the Edwards model [link]Paper  doi  abstract   bibtex   
The nature of charge transport within a correlated background medium can be described by spinless fermions coupled to bosons in the model introduced by Edwards. Combining numerical density matrix renormalization group and analytical projector-based renormalization methods, we explore the ground-state phase diagram of the Edwards model in one dimension. Below a critical boson frequency, any long-range order disappears and the system becomes metallic. If the charge carriers are coupled to slow quantum bosons, the Tomonaga-Luttinger liquid is attractive and finally makes room for a phase separated state, just as in the t-J model. The phase boundary separating the repulsive from the attractive Tomonaga-Luttinger liquid is determined from long-wavelength charge correlations, whereas fermion segregation is indicated by a vanishing inverse compressibility. On approaching phase separation, the photoemission spectra develop strong anomalies.
@article{ejima_phase_2012,
	title = {Phase separation in the {Edwards} model},
	volume = {86},
	url = {http://link.aps.org/doi/10.1103/PhysRevB.86.155149},
	doi = {10.1103/PhysRevB.86.155149},
	abstract = {The nature of charge transport within a correlated background medium can be described by spinless fermions coupled to bosons in the model introduced by Edwards. Combining numerical density matrix renormalization group and analytical projector-based renormalization methods, we explore the ground-state phase diagram of the Edwards model in one dimension. Below a critical boson frequency, any long-range order disappears and the system becomes metallic. If the charge carriers are coupled to slow quantum bosons, the Tomonaga-Luttinger liquid is attractive and finally makes room for a phase separated state, just as in the t-J model. The phase boundary separating the repulsive from the attractive Tomonaga-Luttinger liquid is determined from long-wavelength charge correlations, whereas fermion segregation is indicated by a vanishing inverse compressibility. On approaching phase separation, the photoemission spectra develop strong anomalies.},
	number = {15},
	urldate = {2015-02-06},
	journal = {Physical Review B},
	author = {Ejima, S. and Sykora, S. and Becker, K. W. and Fehske, H.},
	month = oct,
	year = {2012},
	pages = {155149},
	file = {APS Snapshot:/home/schlady/.zotero/zotero/za3jlr8i.default/zotero/storage/TG34QM4R/PhysRevB.86.html:text/html;Ejima et al_2012_Phase separation in the Edwards model.pdf:/home/schlady/.zotero/zotero/za3jlr8i.default/zotero/storage/DFA53V5S/Ejima et al_2012_Phase separation in the Edwards model.pdf:application/pdf}
}
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