New limit on lorentz invariance violation

[connor415]

Seasons greetings all,

I am trying to dissect a really interesting article:

http://www.nature.com.libproxy.ucl.ac.uk/nature/journal/v462/n7271/full/nature08574.html

but I am struggling with some of the more technical terms in it. I have shown it to some lecturers at my uni and even they are confused.

For example, what is the M_QGn?

Its called the quantum gravity mass.

All i could find on it is that it is a parameter used to scale dispersion.

I am also struggling to understand exactly what is the result of the experiment. Its says it places a new lower limit on linear energy dependence at 1.2E_Planck, so does that mean that it was higher or lower before? Can they only test LIV time delays down to 1.2E_Planck?

Arggghhhhh :)

 

[dmtr]

I am trying to dissect a really interesting article:
http://www.nature.com.libproxy.ucl.ac.uk/nature/journal/v462/n7271/full/nature08574.html

Just some bookkeeping. The article in question is "A limit on the variation of the speed of light arising from quantum gravity effects" - http://www.nature.com/nature/journal/v462/n7271/full/nature08574.html

 

[connor415]

Oh right thanks!