[GiNaC-list] dirac_spinor?

[Vladyslav Shtabovenko]

Dear Vladimir,

thanks for your suggestion. I had a closer look at the clifford class,
and my original idea was to use a clifford unit object as a dummy 
representation of a spinor.

However, this doesn't seem to be possible
since the eval_ncmul function assumes that all clifford objects 
anitcommute (see line 550 in clifford.cpp) with dirac_gamma5.

On the other hand, all objects that do not belong to the clifford class 
do commute with the gamma matrices, such that there seems to be no way 
to define a spinor object that

a) doesn't commute with any of the gammas
b) doesn't anticommute with dirac_gamma5

Any ideas?

Cheers,
Vladyslav




On 14/08/14 19:36, Vladimir V. Kisil wrote:
> 	Dear Vladyslav,
>>>>>> On Thu, 14 Aug 2014 16:14:07 +0200, Vladyslav Shtabovenko <v.shtabovenko at tum.de> said:
>      VCh> I'm wondering if it is possible to define Dirac spinors in the
>      VCh> context of Clifford objects,
>
> 	Look section "4.15.1.2 A generic Clifford algebra" of the
>    tutorial, this may provide the functionality which you are looking
>    for.
>
>    Best wishes,
>    Vladimir
>