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Static quantum multiverse

Yasunori Nomura
Phys. Rev. D 86, 083505 – Published 2 October 2012

Abstract

We consider the multiverse in the intrinsically quantum mechanical framework recently proposed in Refs. [3,4]. By requiring that the principles of quantum mechanics are universally valid and that physical predictions do not depend on the reference frame one chooses to describe the multiverse, we find that the multiverse state must be static—in particular, the multiverse does not have a beginning or end. We argue that, despite its naive appearance, this does not contradict observation, including the fact that we observe that time flows in a definite direction. Selecting the multiverse state ultimately boils down to finding normalizable solutions to certain zero-eigenvalue equations, analogous to the case of the hydrogen atom. Unambiguous physical predictions would then follow, according to the rules of quantum mechanics.

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  • Received 29 May 2012

DOI:https://doi.org/10.1103/PhysRevD.86.083505

© 2012 American Physical Society

Authors & Affiliations

Yasunori Nomura

  • Berkeley Center for Theoretical Physics, Department of Physics, University of California, Berkeley, California 94720, USA and Theoretical Physics Group, Lawrence Berkeley National Laboratory, California 94720, USA

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Issue

Vol. 86, Iss. 8 — 15 October 2012

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Images

  • Figure 1
    Figure 1
    Suppose you know that half of a chair and of a room are in the first half of the scene (the upper picture). In a regular ordered world, you expect the second half of the scene to contain the other half of the chair and the room, possibly with some other things (the lower left picture). On the other hand, the number of such states is much smaller than that of states in which the second half contains random, disordered configurations (the lower right picture).Reuse & Permissions
  • Figure 2
    Figure 2
    A schematic depiction of the analogy between the hydrogen atom and the quantum multiverse. In the case of the hydrogen atom, the only relevant states are those that satisfy the Schrödinger equation and are normalizable in the Hilbert space spanned by |r (solid line); the non-normalizable modes are irrelevant (dashed line). In the quantum multiverse, the relevant states are those that satisfy Eq. (23) and are normalizable in Hilbert space HQG (solid line); the non-normalizable modes, which have diverging coefficients for supersymmetric Minkowski or singularity states, are irrelevant (dashed line).Reuse & Permissions
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