Epigenetics of Ciliates

Motl, Jason A.; Shieh, Annie W.; Chalker, Douglas L.

doi:10.1002/3527600906.mcb.201100024

Encyclopedia of Molecular Cell Biology and Molecular Medicine 2012

DOI: 10.1002/3527600906.mcb.201100024

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Epigenetics of Ciliates

Jason A. Motl

Annie W. Shieh

Douglas L. Chalker

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2023

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“…I would dissent from a typical characterization of quantum states like the following found in an online discussion: ‘the wave function isn’t a “real object” that can be measured or seen by one experiment. It is a collection of numbers storing all the probabilities [for outcomes] of a measurement.’ [7]. This is a statement of instrumentalism about quantum theory, together with an assumption that an entity’s being real requires that the entity is empirically detectable.…”

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Quantum Haecceity

Kastner

2023

Phil. Trans. R. Soc. A.

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There is an extensive philosophical literature on the interrelated issues of identity, individuality and distinguishability in quantum systems. A key consideration is whether quantum systems are subject to a strong form of individuality termed ‘haecceity’ (from the Latin for ‘this-ness’). I argue that the traditional, strong form of haecceity does not apply at the quantum level, but that in order to properly account for the need for symmetrization in quantum systems, a weaker kind of haecceity must be involved, which I call quantum haecceity . In the process, I also question some generally accepted tenets of the current debate, such as the idea that symmetrization of states for identical quanta must be postulated and reflects permutation invariance. Instead, I note that a perturbative Hamiltonian is required for exchange effects, which suggests that the need for symmetrization arises from specific physical conditions. This article is part of the theme issue ‘Identity, individuality and indistinguishability in physics and mathematics’.

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confidence: 99%

Quantum Haecceity

Kastner

2023

Phil. Trans. R. Soc. A.

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Epigenetics of Ciliates

Cited by 1 publication

References 216 publications

Quantum Haecceity

Quantum Haecceity

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