arXiv:2602.20331

No change in Hilbert space fundamentalism

Ovidiu Cristinel Stoica

quant-phphysics.hist-phSubmitted Feb 23, 2026• Announced Feb 25, 2026• 0 citations

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.

Comments: 3 pages

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