| Issue |
EPL
Volume 106, Number 1, April 2014
|
|
|---|---|---|
| Article Number | 10003 | |
| Number of page(s) | 5 | |
| Section | General | |
| DOI | https://doi.org/10.1209/0295-5075/106/10003 | |
| Published online | 14 April 2014 | |
Awareness of and signaling between entities with opposite thermodynamic arrows of time
1 Physics Department, Clarkson University - Potsdam, NY 13699-5820, USA
2 Departamento de Física, Universidade Federal do Paraná - 81531-980, Curitiba- PR, Brazil
(a) schulman@clarkson.edu
(b) luz@fisica.ufpr.br
Received: 10 January 2014
Accepted: 29 March 2014
Interacting systems with opposite thermodynamic arrows are considered. From previous work on this topic it is known that each system will perceive the other as contributing to noise. However, it was not known whether such noise could be recognized as being due to an opposite-arrow system. We show here that there are signature properties of such interference. The observational implication is that opposite-arrow systems would be physically identifiable. The issue of signals passing between the systems is less well defined, but we show that with one interpretation of the signalling concept communication —but not conversational exchanges— could take place.
PACS: 05.70.Ln – Nonequilibrium and irreversible thermodynamics / 05.20.-y – Classical statistical mechanics
© EPLA, 2014
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