Journal Club presentation Helena Pikhartova April 11, 2018 Summary - - PowerPoint PPT Presentation

Journal Club presentation

Helena Pikhartova April 11, 2018

Summary of article

✽ Proposition of experiment that could observe Hawking radiation

2/7

Black hole information loss paradox

What happens to matter falling into a black hole? ✽ Theoretically, the quantum state of every single particle and photon that went into the black hole can be identified ✽ The information is preserved forever on the surface of the black hole But ✽ In 1975, Hawking realized black holes have a temperature, over vast periods of time, they would evaporate away until there was nothing left (Hawking radiation) ✽ PARADOX Theoretical solutions: ✽ Information within the black hole somehow leaks back out while Hawking radiation is escaping ✽ The black hole holds it all in until the very end, and as the final two particles evaporate, all the information is suddenly released back into the universe ✽ It all goes into the teeniest possible bits and nothing is lost OR the information is compressed into a microscopic space, which remains after the black hole itself has evaporated

3/7

What do they try to do?

✽ Accelerating plasma mirror and then stopping it abruptly ✽ Analogous to late time evolution of black hole Hawking evaporation ✽ Studying entanglement to

• bserve black hole unitarity

4/7

How will they do it?

5/7

Details

Plasma mirror concept: Backgrounds of the experiment: ✽ Compton scattering (but going

• pposite direction)

✽ entangled double-photon emission via accelerated electrons or double-photon Compton backscattering

6/7

Related work

✽ In the event that speculative large extra dimension theories are correct, CERN’s Large Hadron Collider may be able to create micro black holes and

• bserve their evaporation.

✽ No such micro black hole has ever been observed at CERN.

7/7

The end of presentation

1/2

Discussion

2/2