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arXiv · 2602.15134

On the quantum mechanics of finite-mass observers

Juanca Carrasco-Martinez
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Abstract

The principle of relativity is extended to accommodate finite-mass observers with quantum properties by introducing two operational requirements: (i) equivalence of observers at the level of transition amplitudes, and (ii) the impossibility for an observer to access its own quantum state of motion. This results in a fully relative formulation of quantum mechanics with observer-dependent Hilbert spaces, relative quantization rules, and novel uncertainty relations, while also elucidating some interpretational issues present in the current formulation of quantum mechanics and giving experimentally testable signatures.

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Juanca Carrasco-Martinez. 2026-02-16. On the quantum mechanics of finite-mass observers. https://arxiv.org/abs/2602.15134

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