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I am a theoretical physicist at University of California, Berkeley. Last month, I attended a very interesting conference organized by Foundamental Questions Institute (FQXi) in Puerto Rico, and presented a talk about making predictions in cosmology, especially in the eternally inflating multiverse. I very much enjoyed discussions with people at the conference, where I was invited [...]
Last week was the final week of classes, and I brought my ph12b class, aka baby-quantum, to conclusion. Just like the last time I taught the class, I concluded with what should make the students honor the quantum gods – the EPR paradox and Bell’s inequality. Even before these common conundrums of quantum mechanics, the [...]
[youtube=http://www.youtube.com/watch?v=T2DXrs0OpHU?vq=hd720&rel=0&showinfo=0] by Jorge Cham You might think the title is a little exaggerated, but if there's one thing I've learned from Theoretical Physicists so far, it's to be bold with my conjectures about reality. Welcome to the second installment of our series of animations about Quantum Information! After an auspicious start describing doing the impossible, this [...]
Faculty, Quantum Information
[youtube=http://www.youtube.com/watch?v=hKFecm9NKbM?vq=hd720&rel=0&showinfo=0] by Jorge Cham. Ok, this is where things get weird. If quantum computers, femtometer motions or laser alligators weren't enough, let's throw in fractionalized electrons, topological surfaces and strings that go to the end of time. To be honest, the idea that an electron can't be split hadn't even occurred to me before my conversation with Gil [...]
[youtube=http://www.youtube.com/watch?v=1zD1U1sIPQ4?wmode=transparent&autohide=1&egm=0&hd=1&iv_load_policy=1&modestbranding=1&rel=0&showinfo=0&showsearch=0] by Jorge Cham How do you make something that has never existed before? I often get suggestions for comics I should draw, which I welcome because A) I like to think of PHD Comics as a global collaborative effort and B) after 17 years, I'm almost out of ideas. This particular suggestion came from Chen-Lung [...]
[youtube=http://www.youtube.com/watch?v=pktWhH6m_DM?vq=hd720&rel=0&showinfo=0] by Jorge Cham What does it mean for something to be Quantum? I have to confess, I don't know. My Ph.D was in Robotics and Kinematics, so my neurons are deeply trained to think in terms of classical dynamics. I asked my siblings (two engineers and one architect) what comes to mind for them [...]
Last Friday the 13th was a lucky day for those who love physics --- The online html version of Volume 1 of the Feynman Lectures on Physics (FLP) was released! Now anyone with Internet access and a web browser can enjoy these unique lectures for free. They look beautiful. Mike Gottlieb at Caltech on [...]
This year marks the 50th anniversary of my first publication. In 1964, when we were eleven-year-old fifth graders, my best friend Mace Rosenstein and I launched The Pres-stein Gazette, a not-for-profit monthly. Though the first issue sold well, the second issue never appeared. Front page of the inaugural issue of the Pres-stein Gazette. Faded [...]
Five years ago, I was staring out one of the few windowed cubicles in a cluttered office full of overambitious salespeople willing to throw their own father under a bus, if it meant a couple more dollars in commission and maybe a few more brownie points from the sweaty, beer-bellied sales manager. What was going [...]