Each Instant of Time a New Universe

  • Yakir Aharonov
  • Sandu Popescu
  • Jeff TollaksenEmail author


We present an alternative view of quantum evolution in which each moment of time is viewed as a new “universe” and time evolution is given by correlations between them. [Editors note: for a video of the talks given by Prof. Aharonov at the Aharonov-80 conference in 2012 at Chapman University, see and and by Prof. Popescu, see]


Time Evolution Entangle State Time Moment Unitary Evolution Spin Component 
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S.P. acknowledges support from the European Research Council ERC Advanced Grant NLST, EU grant Q-Essence and the Templeton Foundation. We thank Ildi Popescu for her artistic assistance with Fig. 3.1.


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Copyright information

© Springer-Verlag Italia 2014

Authors and Affiliations

  • Yakir Aharonov
    • 1
    • 2
  • Sandu Popescu
    • 3
    • 4
  • Jeff Tollaksen
    • 1
    Email author
  1. 1.Institute for Quantum Studies and Schmid College of Science and TechnologyChapman UniversityOrangeUSA
  2. 2.School of Physics and AstronomyTel Aviv UniversityTel AvivIsrael
  3. 3.H.H. Wills Physics LaboratoryUniversity of BristolBristolUK
  4. 4.Institute for Quantum StudiesChapman UniversityOrangeUSA

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