Publication details for Professor Tom LancasterMcLeish, Tom, Pexton, Mark & Lancaster, Tom (2019). Emergence and topological order in classical and quantum systems. Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 66: 155-169.
- Publication type: Journal Article
- ISSN/ISBN: 1355-2198 (print)
- DOI: 10.1016/j.shpsb.2019.02.006
- Further publication details on publisher web site
- Durham Research Online (DRO) - may include full text
Author(s) from Durham
There has been growing interest in systems in condensed matter physics as a potential source of examples of both epistemic and ontological emergence. One of these case studies is the fractional quantum Hall state (FQHS). In the FQHS a system of electrons displays a type of holism due to a pattern of long-range quantum entanglement that some argue is emergent. Indeed, in general, quantum entanglement is sometimes cited as the best candidate for one form of ontological emergence. In this paper we argue that there are significant formal and physical parallels between the quantum FQHS and classical polymer systems. Both types of system cannot be explained simply by considering an aggregation of local microphysical properties alone, since important features of each are globally determined by topological features. As such, we argue that if the FQHS is a case of ontological emergence then it is not due to the quantum nature of the system and classical polymer systems are ontologically emergent as well.