|
related topics |
{observables, space, algebra} |
{theory, mechanics, state} |
{algorithm, log, probability} |
{time, decoherence, evolution} |
{qubit, qubits, gate} |
{state, states, entangled} |
{measurement, state, measurements} |
{time, systems, information} |
{entanglement, phys, rev} |
{alice, bob, state} |
{error, code, errors} |
{states, state, optimal} |
{key, protocol, security} |
{information, entropy, channel} |
{state, algorithm, problem} |
{energy, gaussian, time} |
{vol, operators, histories} |
{bell, inequality, local} |
{particle, mechanics, theory} |
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Coordinating quantum agents' perspectives: convex operational theories,
quantum information, and quantum foundations
Howard Barnum
abstract: In this paper, I propose a project of enlisting quantum information science
as a source of task-oriented axioms for use in the investigation of operational
theories in a general framework capable of encompassing quantum mechanics,
classical theory, and more. Whatever else they may be, quantum states of
systems are compendia of probabilities for the outcomes of possible operations
we may perform on the systems: ``operational theories.'' I discuss appropriate
general frameworks for such theories, in which convexity plays a key role. Such
frameworks are appropriate for investigating what things look like from an
``inside view,'' i.e. for describing perspectival information that one
subsystem of the world can have about another. Understanding how such views can
combine, and whether an overall ``geometric'' picture (``outside view'')
coordinating them all can be had, even if this picture is very different in
nature from the structure of the perspectives within it, is the key to
understanding whether we may be able to achieve a unified, ``objective''
physical view in which quantum mechanics is the appropriate description for
certain perspectives, or whether quantum mechanics is truly telling us we must
go beyond this ``geometric'' conception of physics. The nature of information,
its flow and processing, as seen from various operational persepectives, is
likely to be key to understanding whether and how such coordination and
unification can be achieved.
- oai_identifier:
- oai:arXiv.org:quant-ph/0611110
- categories:
- quant-ph
- comments:
- 41 pages. Greatly extended version of quant-ph/0304159 with several
additional topics discussed--more philosophical material toward the
beginning, more technical (but still fairly discursive) material toward the
end
- arxiv_id:
- quant-ph/0611110
- created:
- 2006-11-09
Full article ▸
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