Quantum estimation for Dirac particles with the Hawking effect in the background of a Schwarzschild black hole

2019 ◽  
Vol 16 (8) ◽  
pp. 085206 ◽  
Author(s):  
Cheng-Cheng Liu ◽  
Jia-Dong Shi ◽  
Zhi-Yong Ding ◽  
Juan He ◽  
Tao Wu ◽  
...  
Keyword(s):  
Black Hole ◽  
Schwarzschild Black Hole ◽  
Hawking Effect ◽  
Dirac Particles

scholarly journals Correlation loss and multipartite entanglement across a black hole horizon (

2009 ◽  
Vol 9 (7&8) ◽  
pp. 657-665
Author(s):  
G. Adesso ◽  
I. Fuentes-Schuller
Keyword(s):  
Black Hole ◽  
Small Mass ◽  
Point Of View ◽  
Multipartite Entanglement ◽  
Squeezed State ◽  
Schwarzschild Black Hole ◽  
Bipartite Entanglement ◽  
Hawking Effect ◽  
Entanglement Distribution ◽  
Quantum And Classical Correlations

We investigate the Hawking effect on entangled fields. By considering a scalar field which is in a two-mode squeezed state from the point of view of freely falling (Kruskal) observers crossing the horizon of a Schwarzschild black hole, we study the degradation of quantum and classical correlations in the state from the perspective of physical (Schwarzschild) observers confined outside the horizon. Due to monogamy constraints on the entanglement distribution, we show that the lost bipartite entanglement is recovered as multipartite entanglement among modes inside and outside the horizon. In the limit of a small-mass black hole, no bipartite entanglement is detected outside the horizon, while the genuine multipartite entanglement interlinking the inner and outer regions grows infinitely.

scholarly journals PARTITION FUNCTION OF THE REISSNER–NORDSTRÖM BLACK HOLE

2014 ◽  
Vol 23 (01) ◽  
pp. 1450001 ◽  
Author(s):  
JARMO MÄKELÄ
Keyword(s):  
Phase Transition ◽  
Black Hole ◽  
Partition Function ◽  
Microscopic Model ◽  
Schwarzschild Black Hole ◽  
Hawking Effect ◽  
Analytic Expression

We consider a microscopic model of a stretched horizon of the Reissner–Nordström black hole. In our model, the stretched horizon consists of discrete constituents. Using our model we obtain an explicit, analytic expression for the partition function of the hole. Our partition function implies, among other things, the Hawking effect, and provides it with a microscopic explanation as a phase transition taking place at the stretched horizon. The partition function also implies the Bekenstein–Hawking entropy law. The model and its consequences are similar to those obtained previously for the Schwarzschild black hole.

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