2018
Thomas Botzung, Davide Vodola, Piero Naldesi, Markus Müller, Elisa Ercolessi, Guido Pupillo
Algebraic Localization from Power-Law Interactions in Disordered Quantum Wires Journal Article
In: arXiv:1810.09779 [cond-mat, physics:quant-ph], 2018.
Abstract | BibTeX | Tags: Condensed Matter - Disordered Systems and Neural Networks, Condensed Matter - Strongly Correlated Electrons, Quantum Physics
@article{Botzung2018,
title = {Algebraic Localization from Power-Law Interactions in Disordered Quantum Wires},
author = {Thomas Botzung and Davide Vodola and Piero Naldesi and Markus Müller and Elisa Ercolessi and Guido Pupillo},
year = {2018},
date = {2018-10-01},
journal = {arXiv:1810.09779 [cond-mat, physics:quant-ph]},
abstract = {We analyze the effects of disorder on the correlation functions of one-dimensional quantum models of fermions and spins with long-range interactions that decay with distance $$backslash$ell$ as a power-law $1/$backslash$ell^$backslash$alpha$. Using a combination of analytical and numerical results, we demonstrate that power-law interactions imply a long-distance algebraic decay of correlations within disordered-localized phases, for all exponents $$backslash$alpha$. The exponent of algebraic decay depends only on $$backslash$alpha$, and not, e.g., on the strength of disorder. We find a similar algebraic localization for wave-functions. These results are in contrast to expectations from short-range models and are of direct relevance for a variety of quantum mechanical systems in atomic, molecular and solid-state physics.},
keywords = {Condensed Matter - Disordered Systems and Neural Networks, Condensed Matter - Strongly Correlated Electrons, Quantum Physics},
pubstate = {published},
tppubtype = {article}
}
We analyze the effects of disorder on the correlation functions of one-dimensional quantum models of fermions and spins with long-range interactions that decay with distance $$backslash$ell$ as a power-law $1/$backslash$ell^$backslash$alpha$. Using a combination of analytical and numerical results, we demonstrate that power-law interactions imply a long-distance algebraic decay of correlations within disordered-localized phases, for all exponents $$backslash$alpha$. The exponent of algebraic decay depends only on $$backslash$alpha$, and not, e.g., on the strength of disorder. We find a similar algebraic localization for wave-functions. These results are in contrast to expectations from short-range models and are of direct relevance for a variety of quantum mechanical systems in atomic, molecular and solid-state physics.2016
Tao Ying, Marcello Dalmonte, Adriano Angelone, Fabio Mezzacapo, Peter Zoller, Guido Pupillo
Cluster Bose Metals Journal Article
In: arXiv:1606.04267 [cond-mat], 2016.
Abstract | BibTeX | Tags: Condensed Matter - Quantum Gases, Condensed Matter - Strongly Correlated Electrons
@article{Ying2016,
title = {Cluster Bose Metals},
author = {Tao Ying and Marcello Dalmonte and Adriano Angelone and Fabio Mezzacapo and Peter Zoller and Guido Pupillo},
year = {2016},
date = {2016-01-01},
journal = {arXiv:1606.04267 [cond-mat]},
abstract = {Quantum phases of matter are usually characterised by broken symmetries. Identifying physical mechanisms and microscopic Hamiltonians that elude this paradigm is one of the key present challenges in many-body physics. Here, we use quantum Monte-Carlo simulations to show that a Bose metal phase, breaking no symmetries, is realized in simple Hubbard models for bosonic particles on a square lattice complemented by soft-shoulder interactions. The Bose metal appears at strong coupling and is separated from a supersolid phase and a superfluid at weaker couplings. The enabling mechanism is provided by cluster formation in the corresponding classical tiling problem. The identification of the cluster mechanism paves the way to the realization of exotic quantum liquids in both natural and synthetic quantum matter that harbors cluster formation.},
keywords = {Condensed Matter - Quantum Gases, Condensed Matter - Strongly Correlated Electrons},
pubstate = {published},
tppubtype = {article}
}
Quantum phases of matter are usually characterised by broken symmetries. Identifying physical mechanisms and microscopic Hamiltonians that elude this paradigm is one of the key present challenges in many-body physics. Here, we use quantum Monte-Carlo simulations to show that a Bose metal phase, breaking no symmetries, is realized in simple Hubbard models for bosonic particles on a square lattice complemented by soft-shoulder interactions. The Bose metal appears at strong coupling and is separated from a supersolid phase and a superfluid at weaker couplings. The enabling mechanism is provided by cluster formation in the corresponding classical tiling problem. The identification of the cluster mechanism paves the way to the realization of exotic quantum liquids in both natural and synthetic quantum matter that harbors cluster formation.2012
M A Baranov, M Dalmonte, G Pupillo, P Zoller
Condensed Matter Theory of Dipolar Quantum Gases Journal Article
In: Chemical Reviews, 112 (9), pp. 5012-5061, 2012, ISSN: 0009-2665.
Links | BibTeX | Tags: Condensed Matter - Quantum Gases, Condensed Matter - Strongly Correlated Electrons
@article{Baranov2012,
title = {Condensed Matter Theory of Dipolar Quantum Gases},
author = {M A Baranov and M Dalmonte and G Pupillo and P Zoller},
doi = {10.1021/cr2003568},
issn = {0009-2665},
year = {2012},
date = {2012-09-01},
journal = {Chemical Reviews},
volume = {112},
number = {9},
pages = {5012-5061},
keywords = {Condensed Matter - Quantum Gases, Condensed Matter - Strongly Correlated Electrons},
pubstate = {published},
tppubtype = {article}
}
Publications
2018
Algebraic Localization from Power-Law Interactions in Disordered Quantum Wires Journal Article
In: arXiv:1810.09779 [cond-mat, physics:quant-ph], 2018.
2016
Cluster Bose Metals Journal Article
In: arXiv:1606.04267 [cond-mat], 2016.
2012
Condensed Matter Theory of Dipolar Quantum Gases Journal Article
In: Chemical Reviews, 112 (9), pp. 5012-5061, 2012, ISSN: 0009-2665.