Journal
NEW JOURNAL OF PHYSICS
Volume 17, Issue -, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1367-2630/17/7/072003
Keywords
directed percolation; Rydberg atoms; non-equilibrium universality
Categories
Funding
- European Research Council under the European Union's Seventh Framework Programme / ERC [335266]
- EU-FET grant [HAIRS 612862]
- University of Nottingham
- H2020-FETPROACT grant [640378]
- EPSRC [EP/J009776/1]
- Royal Society
- EPSRC [EP/J009776/1, EP/M014266/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/M014266/1, EP/J009776/1] Funding Source: researchfish
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The theory of continuous phase transitions predicts the universal collective properties of a physical system near a critical point, which for instance manifest in characteristic power-law behaviours of physical observables. The well-established concept at or near equilibrium, universality, can also characterize the physics of systems out of equilibrium. The most fundamental instance of a genuine non-equilibrium phase transition is the directed percolation (DP) universality class, where a system switches from an absorbing inactive to a fluctuating active phase. Despite being known for several decades it has been challenging to find experimental systems that manifest this transition. Here we show theoretically that signatures of the DP universality class can be observed in an atomic system with long-range interactions. Moreover, we demonstrate that even mesoscopic ensembles-which are currently studied experimentally-are sufficient to observe traces of this non-equilibrium phase transition in one, two and three dimensions.
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