No change in Hilbert space fundamentalism

Ovidiu Cristinel Stoica

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arXiv · 2602.20331

No change in Hilbert space fundamentalism

Ovidiu Cristinel Stoica

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Abstract

Hilbert space fundamentalism (HSF) states that everything about the physical world is encoded in the Hamiltonian operator and the state vector (as a unit vector, not a wavefunction, which requires additional specification of a configuration space, a position basis, or the position observables). That all structures needed to describe reality, including subsystems, space, fields, emerge from these. I show that HSF can't account for our observations that the physical world changes in time.

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Ovidiu Cristinel Stoica. 2026-02-23. No change in Hilbert space fundamentalism. https://arxiv.org/abs/2602.20331

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