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            “Quantum Darwinism versus spectrum broadcast structure”


                                                          Ryszard Horodecki

                                                            (University of Gdansk)


Abstract :

Together with birth of quantum mechanics a touchy question arised:

 How does Nature make a food-bridge from quantum substratum to the objective everyday


The fact that this quantum-to-classical transition as yet not fully understood may mean that

we have not grasped all the possible implications of the quantum formalism. I will consider

the above problem in this context of two different approaches - quantum Darwinism and

the so called spectrum broadcast structure which describe the emergence of classical

objectivity from the quantum subjective world. Unfortunately the two approaches sometimes

can lead to different predictions. However, an interesting attempt to relate the two frameworks

in the common perspective has recently been made.


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