Article (Scientific journals)
Ion-induced interactions in a Tomonaga-Luttinger liquid
Michelsen, Andreas Nicolai Bock; Valiente, Manuel; Zinner, Nikolaj Thomas et al.
2019In Physical Review. B, 100 (20)
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Keywords :
Luttinger liquid; Atom-ion interaction; DMRG; Tomonaga-Luttinger liquid; Quantum defect theory; One-dimensional
Abstract :
[en] We investigate the physics of a Tomonaga-Luttinger liquid of spin-polarized fermions superimposed on an ion chain. This compound system features (attractive) long-range interspecies interactions. By means of density matrix renormalization group techniques we compute the Tomonaga-Luttinger-liquid parameter and speed of sound as a function of the relative atom/ion density and the two quantum defect parameters, namely, the even and odd short-range phases which characterize the short-range part of the atom-ion polarization potential. The presence of ions is found to allow critical tuning of the atom-atom interaction, and the properties of the system are found to depend significantly on the short-range phases due to the atom-ion interaction. These latter dependencies can be controlled, for instance, by manipulating the ions' internal state. This allows modification of the static properties of the quantum liquid via external driving of the ionic impurities.
Research center :
ULHPC - University of Luxembourg: High Performance Computing
Disciplines :
Physics
Author, co-author :
Michelsen, Andreas Nicolai Bock ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit ; Aarhus University > Department of Physics and Astronomy
Valiente, Manuel;  Tsinghua University > Institute for Advanced Study
Zinner, Nikolaj Thomas;  Aarhus University > Department of Physics and Astronomy ; Aarhus University > Aarhus Institute of Advanced Studies
Negretti, Antonio;  Zentrum fur Optische Quantentechnologien, Fachbereich Physik > University of Hamburg ; Hamburg Center for Ultrafast Imaging > University of Hamburg
External co-authors :
yes
Language :
English
Title :
Ion-induced interactions in a Tomonaga-Luttinger liquid
Publication date :
27 November 2019
Journal title :
Physical Review. B
ISSN :
2469-9969
Publisher :
American Physical Society
Volume :
100
Issue :
20
Peer reviewed :
Peer Reviewed verified by ORBi
Focus Area :
Physics and Materials Science
Available on ORBilu :
since 09 January 2020

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