Analog of Hawking Radiation Observed?

[Phyisab****]

Didn't see a post about this yet.

http://arxiv.org/abs/1009.4634

 

[Dmitry67]

Wow! Interesting, even it is not a "real" horizon

 

[Drakkith]

That's pretty cool.

 

[Phyisab****]

Anyone have an opinion on how well this parallels astrophysical Hawking radiation?

 

[Demystifier]

Anyone have an opinion on how well this parallels astrophysical Hawking radiation?

As far as I can see, the measured spectrum does not have a thermal distribution, while true Hawking radiation should.
From their analysis, it is not clear at all (at least to me) that observed radiation is really the Hawking radiation.

 

[unusualname]

The arXiv blog has a post about it http://www.technologyreview.com/blog/arxiv/25805/

The subsequent comments aren't particularly enlightening but are mildly amusing (particularly the one that suggests curtains satisfy the definition of a "white hole" :) )

 

[sheaf]

This ref

http://arxiv.org/abs/1003.4150"

contains more details on how the physics of these systems is similar to that of a BH event horizon.

 

[Demystifier]

This ref

http://arxiv.org/abs/1003.4150"

contains more details on how the physics of these systems is similar to that of a BH event horizon.

Seems much more interesting than the experimental paper we discussed so far. Thanks!

 

[Demystifier]

Today Unruh also gave a critique of the experimental paper above:
http://xxx.lanl.gov/abs/1012.2686