Physics

Is The Constrained Minimal Supersymmetric Extension Of The Standard Model Written Off Yet?

Today I read with pleasure a paper on Supersymmetry which is surprisingly well written and clear. I can only warmly advise anybody seriously interested in the phenomenology of SUSY (in particular, the version called "constrained minimal supersymmetric ...

Article - Tommaso Dorigo - May 13 2012 - 1:03am

The Most Famous Equation Of Physics And Its Derivation

CONTENTS PART A: Introduction: does the inertia of a body depend upon its energy content? PART B: The Toolkit: mathematical and physical assumptions  PART C: The Thought Experiment and the Word Problem PART D: The Derivation. Solving the Word Problem PART ...

Article - Barry Barrett - May 15 2012 - 10:56am

In The Milky Way, There May Be 1000X More Planets Than Stars

A few hundred thousand billion free-floating, Earth-sized planets may exist in the space between stars in the Milky Way, argues an international team of scientists in Astrophysics and Space Science. Because it's required for astronomy claims this deca ...

Article - News Staff - May 13 2012 - 1:17am

Toying With Entropy: Dominos, Tetris, And Black Holes

In the previous blog post we discussed entropy. I provided you with a less well-known perspective on entropy and demonstrated that this generic perspective is fully compatible with the more traditional (and more narrow) thermodynamics view on entropy. I pr ...

Article - Johannes Koelman - May 13 2012 - 11:46am

SUSY: A Matter Of Prior Beliefs

In this sorry age for Supersymmetry (SUSY) phenomenologists, it is quite easy to step on an aching toe while discussing the results of the Large Hadron Collider experiments, whose results have let these physicists down by excluding the presence of SUSY whe ...

Article - Tommaso Dorigo - May 14 2012 - 4:58am

4-Parameter Analytic Animations, Solid Man

This blog required programming.  The basic idea is to have four degrees of freedom for the four parameters living inside a four dimensional quaternion.  Four for loops did the trick. ...

Blog Post - Doug Sweetser - May 14 2012 - 10:52pm

Riding A Long Train Down A Black Hole

Riding into a black hole is a fun mental exercise.  General relativity predicts* that an observer who falls freely into a large black hole will have no means with which she can establish whether she is at the event horizon, which is the radius below which ...

Article - Sascha Vongehr - Aug 26 2013 - 9:27am

Queen Sacrifice

Well, not really a "true" queen sacrifice, but it is still a nice little combination the one I played against a strong 1st category player today at the "Baracchi Memorial" in Venice, a one-day rapid chess tournament which is held every ...

Blog Post - Tommaso Dorigo - May 20 2012 - 4:12pm

Are You For Real Quantum Mechanics?

I like to explain stuff so that people like you and me think “aha!”, and not, “this guy knows a lot; I better agree though I have no clue what he is talking about”. In this manner, let me again briefly introduce one of those deeply complex and hugely contr ...

Article - Sascha Vongehr - May 21 2012 - 8:26pm

Einstein Field Equation Derivation in about a Dozen Steps

In this blog I will derive the Einstein field equations starting from the Hilbert action.  Since there are only two terms in the Hilbert action, one of which is left alone, there is not that much to do.  Well, there is always way more to do- how well is t ...

Blog Post - Doug Sweetser - May 21 2012 - 11:46pm