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The Philosophy of Open Quantum Systems

Session Information

Standard quantum mechanics (QM) is formulated from the point of view of systems perfectly isolated from their environment. Most philosophical discussions begin from this basis. But while the closed-system point of view has yielded remarkable successes, it is nevertheless an idealisation as physical systems cannot in general be perfectly isolated. In this symposium we thus focus on issues related to open systems, e.g.: What are the implications for our understanding of QM of taking open systems as fundamental? What is the relevance of quantum information theory to this question? Which constraints are reasonable for the physical evolution of open systems? How does one's approach to open quantum systems affect one's view of quantum statistical mechanics and/or quantum thermodynamics?

03 Nov 2018 03:45 PM - 05:45 PM(America/Los_Angeles)
Venue : Seneca (Fourth Floor Union Street Tower)
20181103T1545 20181103T1745 America/Los_Angeles The Philosophy of Open Quantum Systems

Standard quantum mechanics (QM) is formulated from the point of view of systems perfectly isolated from their environment. Most philosophical discussions begin from this basis. But while the closed-system point of view has yielded remarkable successes, it is nevertheless an idealisation as physical systems cannot in general be perfectly isolated. In this symposium we thus focus on issues related to open systems, e.g.: What are the implications for our understanding of QM of taking open systems as fundamental? What is the relevance of quantum information theory to this question? Which constraints are reasonable for the physical evolution of open systems? How does one's approach to open quantum systems affect one's view of quantum statistical mechanics and/or quantum thermodynamics?

Seneca (Fourth Floor Union Street Tower) PSA2018: The 26th Biennial Meeting of the Philosophy of Science Association office@philsci.org

Presentations

The Open Systems View as Fundamental

Philosophy of Science 03:45 PM - 04:15 PM (America/Los_Angeles) 2018/11/03 22:45:00 UTC - 2018/11/03 23:15:00 UTC
Michael Cuffaro (University of Western Ontario), Stephan Hartmann (LMU Munich)
We consider both the general and the more specific derivation of the Lindblad equation of open quantum systems theory in some detail and argue that in both cases one can discern clear and strong physical motivations for considering the open-systems view of quantum systems (rather than the traditional closed-systems view) as the fundamental one from which to consider the metaphysics of quantum systems, and we discuss the consequences of so doing.
Presenters
MC
Michael Cuffaro
The University Of Western Ontario
Co-Authors
SH
Stephan Hartmann
LMU Munich

Quantum Systems Other Than the Universe

Philosophy of Science 04:15 PM - 04:45 PM (America/Los_Angeles) 2018/11/03 23:15:00 UTC - 2018/11/03 23:45:00 UTC
David Wallace (University of Southern California)
Most interpretative work on quantum theory assumes not just that a quantum system is isolated but that it is the entire Universe. Likewise for a large part of the philosophical literature on the direction of time in statistical mechanics. All this goes radically beyond what the empirical success of quantum mechanics justifies. So how should we approach these foundational questions in the realistic contexts where the systems to which quantum theory are applied cannot realistically be treated as isolated, especially given the ubiquity of decoherence. I'll offer some provisional answers and raise some continuing puzzles.
Presenters
DW
David Wallace
University Of Southern California

Open Quantum Systems: Whence Time Asymmetry?

Philosophy of Science 04:45 PM - 05:15 PM (America/Los_Angeles) 2018/11/03 23:45:00 UTC - 2018/11/04 00:15:00 UTC
Wayne Myrvold (The University of Western Ontario)
Two prima facie puzzling phenomena are the existence of relatively autonomous laws for the evolution of macroscopic variables, which permit us to disregard details of the microstate, and dissipative, irreversible behaviour of the macrostate. In this talk I will examine how these phenomena arise in the context of the theory of open quantum systems, with an aim to suggesting answers to what Zwanzig has called “the essential mystery of statistical mechanics”: why do such models work in the first place?
Presenters Wayne Myrvold
The University Of Western Ontario
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The University of Western Ontario
University of Southern California
The University of Western Ontario
 Wayne Myrvold
The University of Western Ontario
Université du Québec à Trois-Rivières
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