The DOI matches its Crossref record; 48 of the 48 references it cites were found in a registry or an index.
Parity-time-symmetric quantum critical phenomena
Open accessAbstract
Synthetic non-conservative systems with parity-time (PT) symmetric gain–loss structures can exhibit unusual spontaneous symmetry breaking that accompanies spectral singularity. Recent studies on PT symmetry in optics and weakly interacting open quantum systems have revealed intriguing physical properties, yet many-body correlations still play no role. Here by extending the idea of PT symmetry to strongly correlated many-body systems, we report that a combination of spectral singularity and quantum criticality yields an exotic universality class which has no counterpart in known critical phenomena. Moreover, we find unconventional low-dimensional quantum criticality, where superfluid correlation is anomalously enhanced owing to non-monotonic renormalization group flows in a PT-symmetry-broken quantum critical phase, in stark contrast to the Berezinskii–Kosterlitz–Thouless paradigm. Our findings can be experimentally tested in ultracold atoms and predict critical phenomena beyond the Hermitian paradigm of quantum many-body physics.
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Cited by
Parity–time symmetry and exceptional points in photonics
Özdemir, Ş. K., Rotter, S., Nori, F., & Yang, L. (2019) · Nature Materials · doi:10.1038/s41563-019-0304-9 · Cited by 1,773
Yao, S., Song, F., & Wang, Z. (2018) · Physical Review Letters · doi:10.1103/physrevlett.121.136802 · Cited by 933
Non-reciprocal phase transitions
Fruchart, M., Hanai, R., Littlewood, P. B., & Vitelli, V. (2021) · Nature · doi:10.1038/s41586-021-03375-9 · Cited by 567
Tools for quantum simulation with ultracold atoms in optical lattices
Schäfer, F., Fukuhara, T., Sugawa, S., Takasu, Y., & Takahashi, Y. (2020) · Nature Reviews Physics · doi:10.1038/s42254-020-0195-3 · Cited by 488
Second-Order Topological Phases in Non-Hermitian Systems
Liu, T., Zhang, Y.-R., Ai, Q., Gong, Z., Kawabata, K., Ueda, M., & Nori, F. (2019) · Physical Review Letters · doi:10.1103/physrevlett.122.076801 · Cited by 485
Self-citation
Metadata
- Authors
- Ashida, Y., Furukawa, S., & Ueda, M.
- Venue
- Nature Communications
- Published
- 2017-06-08
- Volume
- 8
- Issue
- 1
- Pages
- 15791-15791
- ISSN
- 2041-1723 (ISSN-L)
- OpenAlex
- W2546567487
- Cited by
- 294
- References
- 48
- FWCI
- 15.24
- Type
- journal article
- Language
- en
- Open access
- gold
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