Physics

Many World Interpretation By Splitting A Wiener Sausage

Quantum physics has proven that the world cannot be described by local realism. Therefore, Many-Worlds Interpretations (MWI) are now in vogue. This is already wrong: Everett's is a relative state description, not necessarily a multiple worlds interpr ...

Article - Sascha Vongehr - Nov 22 2013 - 12:03am

The 2-Slit Experiment Revisited (1: Calculation)

According to Feynman, t he 2-slit experiment with electrons "has in it the heart of quantum mechanics" and "is impossible, absolutely impossible, to explain in any classical way". To begin with, it may not be amiss to inform the never-e ...

Article - Ulrich Mohrhoff - Jun 23 2011 - 3:39pm

The Plot Of The Week- ATLAS Dilepton Resonance Search

The ATLAS Collaboration, one of the two high-energy physics experiments at the CERN Large Hadron Collider, has just produced updated results of their ongoing search for new heavy particles decaying into lepton pairs. They are now using up to 236 inverse pi ...

Blog Post - Tommaso Dorigo - Jun 19 2011 - 1:49am

Official Quantum Randi Challenge

The Quantum Randi Challenge (QRC), first introduced here, exists in order to stop the spread of pseudo-science by simply teaching quantum mechanics. Here is the official version of the challenge (also published here and partially in Annals of Physics 339: ...

Article - Sascha Vongehr - Nov 13 2013 - 10:35am

Snarky Puzzle Answers 3

A great title is key to getting lots of views. For my blogs, ones with the fewest views include “Snarky Puzzle Answers”, and “Snarky Puzzle Answers 2”. Do I have high expectations for SPA 3, Revenge of the Nerds? Nope, I expect the community to be consiste ...

Article - Doug Sweetser - Jun 23 2011 - 4:29am

Light-Emitting Top Quark Pairs

A paper describing the first evidence of top pair production in association with a energetic photon has just appeared on the Cornell Arxiv. This search has been performed by the CDF collaboration in a sample of 6 inverse femtobarns of proton-antiproton col ...

Article - Tommaso Dorigo - Jun 21 2011 - 9:17am

The 2-Slit Experiment Revisited (2: Interpretation And Why It's So Hard...)

Continued from the last post. Discounting the Bohmian song and dance, we are led to conclude that each electron does in some sense pass through both slits. But in what sense? Saying that an electron went through both slits cannot be equivalent to saying th ...

Article - Ulrich Mohrhoff - Jun 22 2011 - 10:47am

Quantum Entanglement Without Spooky Action At A Distance?

Quantum entanglement was strange when it was conceptualized.   It violated Einstein's famous speed limit in his Theory of Relativity and he called it spukhafte Fernwirkung- “spooky action at a distance” and sought to note the flaws in  Heisenberg' ...

Article - Hank Campbell - Jun 24 2011 - 4:34pm

No Entanglement, No Classicality, Or No News?

This recent Nature article makes people jump up and down in classical, non-quantum jumps as we speak: “ Experimental non-classicality of an indivisible quantum system ”. There are plenty of misleading news articles already, including here on Science2.0, a ...

Article - Sascha Vongehr - Jun 27 2011 - 7:10am

The Plot Of The Week- MSSM Higgs Limits

I feel quite grateful to the DZERO collaboration for publishing today in the Cornell arxiv the preprint of their search for neutral MSSM Higgs bosons in the tau-pair decay mode. Not more than 12 hours ago in fact I had been looking for a suitable figure wh ...

Article - Tommaso Dorigo - Jun 28 2011 - 11:05pm