## Quantum Mechanics Reconstruction

I want to announce the paper: http://arxiv.org/abs/1407.7610:

**Quantum Mechanics reconstruction from invariance of the laws of nature under tensor composition**

Quantum and classical mechanics are derived from 4 physical principles:

- the laws of nature are invariant under time evolution,
- the laws of nature are invariant under tensor composition,
- the laws of nature are relational,
- positivity (the ability to define a physical state).

Quantum mechanics is singled out by a fifth experimentally justified postulate: nature violates Bell's inequalities.

I will put the Standard Model math explanation series on hold for a bit and in subsequent posts I'll explain this result.

__ALL of quantum mechanics formalism follows from those 4+1 physical principles in a rigorous, constructive, step by step argument.__Both the Hilbert space and the state space realizations are derived.
The axioms are minimal:

- Composition (tensorial, categorical) arguments are needed because there are classical physics models for quantum mechanics for a single particle. Correlations between systems are the essential quantum characteristic.

- Information theoretical arguments (positivity) are used because composition arguments produce a third unphysical solution. However there is no "it from bit", but: "

**".***it*is what can generate a bit
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