A DMRG study of a level coupled to a 1D interacting lead

Yuval Weiss, Miri Sade, Moshe Goldstein, Richard Berkovits

Research output: Contribution to journalArticlepeer-review

Abstract

The influence of nearest neighbor interactions in a reservoir coupled to a single level dot on the width of the level is studied, using the density matrix renormalization group (DMRG) method. We find that while in the Luttinger liquid (LL) phase of the lead (i.e., for weak interactions) the interactions cause a gradual decrease of the resonance width, in the charge density wave (CDW) phase (for strong interactions) the width is zero, and a sharp jump of the dot population occurs. We explain the physical difference between both cases.

Original languageEnglish
Pages (from-to)399-402
Number of pages4
JournalPhysica Status Solidi (B): Basic Research
Volume243
Issue number2
DOIs
StatePublished - Feb 2006
Externally publishedYes

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