You may or may not have noticed that I’ve been making a concerted effort to do more ResearchBlogging posts explaining notable recent results. I’ve been trying to get at least one per week posted, and coming fairly close to that. I’ve been pretty happy with the fake Q&A format that I’ve settled into, and while… Continue reading ResearchBlogging by Proxy: Physics on “Coherent Light Scattering from a Two-Dimensional Mott Insulator”
Category: Condensed Matter
“Supersolids”: The Saga Continues
Several years ago, now, a group at Penn State announced a weird finding in helium at extremely low temperatures and high pressures (which is what you need to make helium solidify): when they made a pendulum out of a cylindrical container with a thin shell of solid He toward the outside edge, twisting about its… Continue reading “Supersolids”: The Saga Continues
BEC: What Is It Good For?
Another response copied/adapted from the Physics Stack Exchange. The question was: What are the main practical applications that a Bose-Einstein condensate can have? Bose Einstein Condensation, for those who aren’t familiar with it, is a phenomenon where a gas of particles with the right spin properties cooled to a very low temeprature will suddenly “condense”… Continue reading BEC: What Is It Good For?
Poll: Top Physics Story of 2010?
It’s the last week of the (calendar) year, which means it’s a good time to recap the previous twelve months worth of scientific news. Typically, publications like Physics World will publish a list of top ten physics stories of 2010, but we’re all Web 2.0 these days, so it seems more appropriate to put this… Continue reading Poll: Top Physics Story of 2010?
Physics Is All About Analogies
Regular commenter onymous left a comment to my review of Warped Passages that struck me as a little odd: The extended analogy between the renormalization group and a bureaucracy convinced me that she was trying way too hard to make sophisticated concepts comprehensible. Also, I’m not really sure that analogies are the best way to… Continue reading Physics Is All About Analogies
Congratulations to Andre Geim and Konstantin Novoselov
The 2010 Nobel Prize in Physics goes to Geim and Novoselov for their work on graphene, a material consisting of one-atom-thick sheets of carbon atoms in a hexagonal array. This is one of those prizes that was basically inevitable, as graphene is one of the hot materials of the last couple of years. Hardly a… Continue reading Congratulations to Andre Geim and Konstantin Novoselov
Melting Simulated Insulators
The Joerg Heber post that provided one of the two papers for yesterday’s Hanbury Brown Twiss-travaganza also included a write-up of a new paper in Nature on Mott insulators, which was also written up in Physics World. Most of the experimental details are quite similar to a paper by Markus Greiner’s group I wrote up… Continue reading Melting Simulated Insulators
New Physics Blogs
A couple of new-to-me but good physics blogs to point out this week: All That Matters by Joerg Heber. This looks like it will be updated weekly-ish, and has a couple of good entries, including a nice write-up of an ultrafast laser experiment that I had flagged to write about before I got distracted by… Continue reading New Physics Blogs
Cold Atoms and Cooper Pairs
So, last week, I talked about how superconductors work, and I have in the past talked about the idea of making cold atoms look like electrons. And obvious question, then, whould be: Do cold atoms systems allow us to learn anything about superconductivity? The answer here is, unfortunately, “Yes and no.” That’s pretty weaselly, dude.… Continue reading Cold Atoms and Cooper Pairs
Baez on Leggett on High-Temperature Superconductors
I had the tab open and everything, and still somehow forgot to include a link to John Baez’s blog post reporting on a talk by Tony Leggett which directly addresses some of the questions asked about yesterday’s superconductivity post. It’s about a talk called “Cuprate superconductivity: the current state of play” (“state of play” apparently… Continue reading Baez on Leggett on High-Temperature Superconductors