Projekteja vuodessa
Abstrakti
Quantum phase transitions are a ubiquitous many-body phenomenon that occurs in a wide range of physical systems, including superconductors, quantum spin liquids, and topological materials. However, investigations of quantum critical systems also represent one of the most challenging problems in physics, since highly correlated many-body systems rarely allow for an analytic and tractable description. Here, we present a Lee-Yang theory of quantum phase transitions including a method to determine quantum critical points which readily can be implemented within the tensor network formalism and even in realistic experimental setups. We apply our method to a quantum Ising chain and the anisotropic quantum Heisenberg model and show how the critical behavior can be predicted by calculating or measuring the high cumulants of properly defined operators. Our approach provides a powerful formalism to analyze quantum phase transitions using tensor networks, and it paves the way for systematic investigations of quantum criticality in two-dimensional systems.
Alkuperäiskieli | Englanti |
---|---|
Artikkeli | 033206 |
Sivumäärä | 6 |
Julkaisu | PHYSICAL REVIEW RESEARCH |
Vuosikerta | 3 |
Numero | 3 |
DOI - pysyväislinkit | |
Tila | Julkaistu - 2 syysk. 2021 |
OKM-julkaisutyyppi | A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä |
Sormenjälki
Sukella tutkimusaiheisiin 'Lee-Yang theory of criticality in interacting quantum many-body systems'. Ne muodostavat yhdessä ainutlaatuisen sormenjäljen.-
Lado Jose AT-palkka: Engineering fractional quantum matter in twisted van der Waals materials
Lado, J. (Vastuullinen tutkija)
01/09/2020 → 31/08/2025
Projekti: Academy of Finland: Other research funding
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Lado Jose AT-kulut: Engineering fractional quantum matter in twisted van der Waals materials
Lado, J. (Vastuullinen tutkija), Hyart, T. (Projektin jäsen), Kumar, P. (Projektin jäsen) & Koch, R. (Projektin jäsen)
01/09/2020 → 31/08/2023
Projekti: Academy of Finland: Other research funding
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Kvanttiteknologian huippuyksikkö
Flindt, C. (Vastuullinen tutkija), Potanina, E. (Projektin jäsen), Burset Atienza, P. (Projektin jäsen) & Pyhäranta, T. (Projektin jäsen)
01/01/2018 → 31/12/2020
Projekti: Academy of Finland: Other research funding