Manipulating the Quantum Vacuum
19 June 2017 | 4:44 pm

New research on manipulating the quantum vacuum has been published in [i]Nature[/i].

This work has been described by Fiona MacDonald, writing for [i]Science Alert[/i]:

"According to quantum mechanics, a vacuum isn't empty at all. It's actually filled with quantum energy and particles that blink in and out of existence for a fleeting moment - strange signals that are known as quantum fluctuations.

"For decades, there had only ever been indirect evidence of these fluctuations, but back in 2015, researchers claimed to have detected the theoretical fluctuations directly. And now the same team says they've gone a step further, having manipulated the vacuum itself, and detecting the changes in these strange signals in the void."

Thank you to Colin Richardson for suggesting this would make a good topic for discussion, noting, "This result is important because it is now possible to directly detect the electromagnetic background noise of the vacuum and study the effects of controlled deviations from this ground state."

Watching the Observers (article)
13 June 2017 | 12:00 am

Accounting for quantum fuzziness could help us measure space and time—and the cosmos—more accurately.

The Multiverse - Part 2 Documentary
28 May 2017 | 8:19 pm

Part 2 of the Multiverse documentary is now released on the YouTube:

https://www.youtube.com/watch?v=xj6tUW-zNQg

The following topics/questions are covered:

1. Does string theory predict the Multiverse?

2. Can the Multiverse theory be tested using CMB?

3. Are we looking for any signatures of a past collision between our universe and another bubble universe?

4. Why was entropy so low at the Big Bang?

5. What is the relationship between cosmological constant/Dark energy and the Multiverse?

6. Does Loop Quantum Gravity predict a Multiverse?

7. What is the relationship between magnetic Monopoles and the Multiverse?

8. Are there any differences between inflation theory and string theory in predicting the Multiverse?

9. What is the relationship between the geometry of space-time and the Multiverse?

10. Appendix: Cosmological Constant


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