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Obtaining a contradiction between local realism and quantum mechanics using only one correlation function

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 Added by Armando Perez
 Publication date 2015
  fields Physics
and research's language is English




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An ensemble consisting on systems of two entangled spin 1/2 particles, all of them in the same global quantum state, are considered. The two spins are measured, each of them, on a fixed direction, at two randomly selected measurement times. Realism, plus locality and freedom of choice referred to these chosen times, are assumed. Then, from the sole correlation function related to the two measurements, without considering any Bell inequalities, a contradiction between these assumptions and quantum mechanics is found.



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