Morning people

QuietOne

Junior Member

Joined: Oct 2015

Posts: 1
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#1

Morning people

18th October 2015, 09:18:AM

I have been lurking on this forum for about 10 minutes and I just had to register

I find this forum really interesting and I hope I can help out in some way in the future.

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Celestine

Site Owner

Joined: May 2007

Posts: 7262
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#2

18th October 2015, 10:55:AM

Re: Morning people

Welcome! :beaglexx

"Although scalar fields are Lorentz scalars, they may transform nontrivially under other symmetries, such as flavour or isospin. For example, the pion is invariant under the restricted Lorentz group, but is an isospin triplet (meaning it transforms like a three component vector under the SU(2) isospin symmetry). Furthermore, it picks up a negative phase under parity inversion, so it transforms nontrivially under the full Lorentz group; such particles are called pseudoscalar rather than scalar. Most mesons are pseudoscalar particles." (finally explained to a captivated Celestine by Professor Brian Cox on Wednesday 27th June 2012 )

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