Orthogonality Catastrophe as a Consequence of the Quantum Speed Limit
| dc.contributor.author | Fogarty, Thomas | |
| dc.contributor.author | Deffner, Sebastian | |
| dc.contributor.author | Busch, Thomas | |
| dc.contributor.author | Campbell, Steve | |
| dc.date.accessioned | 2019-12-19T15:10:57Z | |
| dc.date.available | 2019-12-19T15:10:57Z | |
| dc.date.issued | 2019-10-25 | |
| dc.description.abstract | A remarkable feature of quantum many-body systems is the orthogonality catastrophe which describes their extensively growing sensitivity to local perturbations and plays an important role in condensed matter physics. Here we show that the dynamics of the orthogonality catastrophe can be fully characterized by the quantum speed limit and, more specifically, that any quantum many-body system whose energy scales with the number of particles exhibits the orthogonality catastrophe. Our rigorous findings are demonstrated by two paradigmatic classes of many-body systems - the trapped Fermi gas and the long-range interacting Lipkin-Meshkov-Glick spin model. | en_US |
| dc.description.sponsorship | T.F. acknowledges support under JSPS KAKENHI18K13507. S.D. acknowledges support from the U.S. National Science Foundation under Grant No. CHE-1648973. This research was supported by grant number FQXi-RFP1808 from the Foundational Questions Institute and Fetzer Franklin Fund, a donor advised fund of Silicon Valley Community Foundation (S.D.). T.F. and T.B. are supported by the Okinawa Institute of Science and Technology Graduate University. S.C. gratefully acknowledges the Science Foundation Ireland Starting Investigator Research Grant “SpeedDemon” (No. 18/SIRG/5508) for financial support. | en_US |
| dc.description.uri | https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.124.110601 | en_US |
| dc.format.extent | 7 pages | en_US |
| dc.genre | journal articles | en_US |
| dc.identifier | 10.1103/PhysRevLett.124.110601 | |
| dc.identifier.citation | Fogarty, Thomas; Deffner, Sebastian; Busch, Thomas; Campbell, Steve; Orthogonality Catastrophe as a Consequence of the Quantum Speed Limit; Phys. Rev. Lett. 124, 110601(2020), DOI: 10.1103/PhysRevLett.124.110601 | en_US |
| dc.identifier.uri | http://hdl.handle.net/11603/16919 | |
| dc.language.iso | en_US | en_US |
| dc.relation.isAvailableAt | The University of Maryland, Baltimore County (UMBC) | |
| dc.relation.ispartof | UMBC Physics Department Collection | |
| dc.relation.ispartof | UMBC Faculty Collection | |
| dc.relation.ispartof | UMBC Joint Center for Earth Systems Technology (JCET) | |
| dc.rights | This item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author. | |
| dc.rights | Attribution 4.0 International | |
| dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
| dc.title | Orthogonality Catastrophe as a Consequence of the Quantum Speed Limit | en_US |
| dc.type | Text | en_US |