Emergence of Lorentz invariance in condensed matter

app02drm · science forum beginner Joined: 21 Sep 2006 Posts: 2

Hi Everyone.

I've been reading Volovik's book 'The Universe in a Helium Droplet' and wondered if someone who knows more than I can explain something to me.

He says throughout the book that Lorentz invariance emerges in the low-energy corner. I was wondering exactly how this comes about, for example, I can't see anywhere a proof that the O(1,3) group emerges.

Basically, I was wondeing if someone could explain how it comes about, how it is proved to be Lorentz invariance and where I can find a definative proof that it is Lorentz invariance.

Thanks

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