scholarly journals Stationary Universe Model: Inputs and Outputs

Author(s):  
Arthur Mezhlumian
Author(s):  
Samuel Rey ◽  
Victor Tenorio ◽  
Sergio Rozada ◽  
Luca Martino ◽  
Antonio G. Marques
Keyword(s):  

2021 ◽  
Vol 70 ◽  
pp. 101190
Author(s):  
Manuel Mocholi-Arce ◽  
Ramon Sala-Garrido ◽  
Maria Molinos-Senante ◽  
Alexandros Maziotis

2020 ◽  
Vol 21 (3) ◽  
pp. 1-53
Author(s):  
Ana Cavalcanti ◽  
Robert M. Hierons ◽  
Sidney Nogueira
Keyword(s):  

2021 ◽  
Vol 2021 (8) ◽  
Author(s):  
Alex May

Abstract Quantum tasks are quantum computations with inputs and outputs occurring at specified spacetime locations. Considering such tasks in the context of AdS/CFT has led to novel constraints relating bulk geometry and boundary entanglement. In this article we consider tasks where inputs and outputs are encoded into extended spacetime regions, rather than the points previously considered. We show that this leads to stronger constraints than have been derived in the point based setting. In particular we improve the connected wedge theorem, appearing earlier in arXiv:1912.05649, by finding a larger bulk region whose existence implies large boundary correlation. As well, we show how considering extended input and output regions leads to non-trivial statements in Poincaré-AdS2+1, a setting where the point-based connected wedge theorem is always trivial.


2019 ◽  
Vol 34 (03n04) ◽  
pp. 1950011 ◽  
Author(s):  
C. Aktaş

In this study, we obtain Einstein, Bergmann–Thomson (BT), Landau–Lifshitz (LL), Møller, Papapetrou (PP) and Tolman energy–momentum (EM) distributions for Ruban universe model in general relativity (GR) and teleparallel gravity (TG). We obtain same results for Einstein, Bergmann–Thomson and Landau–Lifshitz energy–momentum distributions in GR and TG. Also, we get same results for Einstein and Tolman energy–momentum distributions in GR. The Møller energy–momentum results are different in GR and TG. Also, using Ruban universe model, we obtain LRS Bianchi type I solutions and we get zero energy–momentum results for this universe model in GR and TG. These results of LRS Bianchi type I universe model agree with Aygün et al., Taşer et al., Doğru et al., Banerjee–Sen, Tryon and Xulu in different gravitation theories.


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