Summary of what’s new and happening on the arXivs according to voters on SciRate.
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When Two Zeros Are Not Zero: The Strange Lives of Quantum Cell Phones
A result of much quantum coolness out today: arXiv:0807.4935 (scirate): “Quantum Communication With Zero-Capacity Channels” by Graeme Smith and Jon Yard. Strange things they are going on when we try to use our quantum cell phones, it seems. Quantum cell phones, what the hell? Read on…
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Now With 1.4 Percent More Physicists!
A new Scienceblog: Built on Facts. Sweet, more physicists:
Matt Springer is a graduate student of physics at Texas A&M university. He is also an occasional writer and tinkerer, and he is probably too curious for his own good.
It’s a good think he’s not a cat, eh?
Physics Personified
Physical Theories as Men, a tit for tat response to Physical Theories as Women. Go ahead, you know you want to click on both of them.
SciRate Papers: 7/18 to 7/25
In attempt to keep my reading more current, I’m going to try to post the top rated arXiv papers on SciRate each week and hopefully add about the papers. Let’s see how long I can keep it up (bets?)
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Hawking To Fall Into the Blackberry Hole?
Rumors have been spreading that Stephen Hawking might be considering moving to the Perimeter Institute. These rumors have been officially denied. The real story here, however is not about Hawking relocating, but whether Stephen Hawking has turned into an experimental physicist and is testing the black hole information paradox by throwing himself into the Blackberry hole. I mean, if Hawking can visit for one month, and then escape from the Perimeter Institute, then I think we can conclude that the unitarity of quantum theory is safe. However, if Hawking get’s sucked in, I myself will worry that information really is destroyed at the Perimeter Institute in a black hole.
Ways To Do Fundamental Theoretical Physics
There are many paths to take if you are interested in doing fundamental physics research in hopes of discovering the secrets of the universe (awkward phrasing there: this makes the universe is like the Bush administration, I guess?) Here are my three favorite ways to do fundamental theoretical physics.
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Occupational Arrows of Time
One of the subjects of great debate in physics goes under the moniker of “the arrow of time.” The basic debate here is (very) roughly to try to understand why time goes it’s merry way seemingly in one direction, especially given that the many of the laws of physics appear to behave the same going backwards as forwards in time. But aren’t we forgetting our most basic science when we debate at great philosophical lengths about the arrow of time? Aren’t we forgetting about…experiment? Here, for your pleasure, then, are some of my personal observations about the direction of time which I’ve observed over my short life. Real observation about the direction of time should lead us to the real direction of time, no?
(With apologies to Alan Lightman
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Leaving Academia: Cry or Celebrate?
No, no, I’m not leaving academia (yet 🙂 Pfffffft! That’s the sound of me thumbing my nose at the world.) But recently I was thinking about about people who get a Ph.D. in, say, physics, or are a new postdoc, and then are faced with what to do next. As Peter Rhode, writes in a post today (or whatever day it is in the upside down part of the world) entitled “Farewell physics”:
The academic system has some serious problems. Most notably in my opinion, there is very limited scope for promotion. For every permanent position there are countless postdocs competing for that position. It simply isn’t possible for all of us post-docs to progress right up through the ladder. Many of us will be stuck as postdocs for the indefinite future. Realistically, I could expect to spend the next 5 or even 10 years as a post-doc before a permanent position would come along, and even then I would have very little control over where I would end up. I’ve seen many outstanding colleagues in exactly this position….
There is a huge salary discrepancy between academia and the private sector. With the same qualifications one can earn twice as much in the private sector than as a post-doc.
Peter, like others before him, has decided that the academic rat race is not the path he wants to take, and is therefore heading out for greener pastures. Of course my first reaction, I’ll admit, is one of sadness: I’ve read some papers by Dr. (err DJ) Rhode, and enjoyed them. By contributing to quantum information science, he’s become part of a community I consider myself a (annoying, loud, insert random invective here) member of. But, in thinking about this, I realized, that I’ve got it all wrong.
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Black Hole Bets Of a Different Kind
So you really think the LHC is going to swallow up the Earth by creating a black hole or a quacking duck with X-ray super powers? Why don’t you put your money where your mouth is? Not to be confused with other famous black hole bets.