Now showing items 1-3 of 3

    • Quantum reference frames associated with non-compact groups: the case of translations and boosts, and the role of mass 

      Smith, Alexander R. H.; Piani, Marco; Mann, Robert B. (American Physical Society, 2016-03)
      Quantum communication without a shared reference frame or the construction of a relational quantum theory requires the notion of a quantum reference frame. We analyze aspects of quantum reference frames associated with ...
    • Transition to light-like trajectories in thin shell dynamics 

      Mann, Robert B.; Nagle, Ian; Terno, Daniel R. (Elsevier, 2018-11)
      It was recently shown that a massive thin shell that is sandwiched between a flat interior and an exterior geometry given by the outgoing Vaidya metric becomes null in a finite proper time. We investigate this transition ...
    • Universal formula for the holographic speed of sound 

      Anabalón, Andrés; Andrade, Tomás; Astefanesei, Dumitru; Mann, Robert B. (Elsevier, 2018-06-10)
      We consider planar hairy black holes in five dimensions with a real scalar field in the Breitenlohner–Freedman window and derive a universal formula for the holographic speed of sound for any mixed boundary conditions of ...


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