Toy Model Challenging Prevailing Definitions of Classicality

Autor:	Duque, Irene Valladares, Strasberg, Philipp
Rok vydání:	2024
Předmět:	Quantum Physics
Druh dokumentu:	Working Paper
Popis:	We analyze a toy model that obeys environmentally induced decoherence and quantum Darwinism and satisfies the decoherent histories criterion and Leggett-Garg inequalities with respect to the pointer basis. Yet, the resulting "classical" dynamics are extremely fragile and recohere after a seemingly innocent control operation. This challenges the idea that classical behaviour or the Multiverse branches can be identified by looking at the universal wave function alone. It also demonstrates that quantum Darwinism is compatible with strong non-Markovianity. Possible solutions related to Markovianity, non-integrability and an operational definition of pointer states are briefly discussed. Comment: 3 pages with 2 figures plus references. Comments welcome!
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2412.08444 Zobrazit plný text záznamu View this record from Arxiv