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Can I read Critical Fluctuations at a Many-body Exceptional Point on EtoBox?
Critical Fluctuations at a Many-body Exceptional Point by Hanai, Ryo ;Littlewood, Peter B. is a Physics and Astronomy article available to read on EtoBox.
What is Critical Fluctuations at a Many-body Exceptional Point about?
Critical phenomena arise ubiquitously in various contexts of physics, from condensed matter, high-energy physics, cosmology, to biological systems, and consist of slow and long-distance fluctuations near a phase transition or critical point. Usually, these phenomena are associated with the softening of a massive mode. Here, we show that a non-Hermitian-induced mechanism of critical phenomena that does not fall into this class can arise in the steady state of generic driven-dissipative many-body systems with coupled binary order parameters such as exciton-polariton condensates and driven-dissipative Bose-Einstein condensates in a double-well potential. The criticality of this "critical exceptional point" is attributed to the coalescence of the collective eigenmodes that convert all the thermal-and-dissipative-noise-activated fluctuations to the Goldstone mode, leading to anomalously giant phase fluctuations that diverge at spatial dimensions d 4. Our dynamic renormalization group analysis shows that this gives rise to a strong-coupling fixed point at dimensions as high as d < 8 associated with a universality class beyond the classification by Hohenberg and Halperin, indicating how a
Who reads Critical Fluctuations at a Many-body Exceptional Point?
It is typically read by researchers, students, and practitioners in Physics and Astronomy.
- Author
- Hanai, Ryo ;Littlewood, Peter B.
- Publisher
- American Physical Society (APS)
- Published
- 2020
- Language
- EN
- Field
- Physics and Astronomy (Physical Sciences)