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Opened 15 years ago

Closed 13 years ago

Last modified 8 years ago

#218 closed enhancement (wontfix)

Implement leading color approximation and/or 1/N_C expansion

Reported by: ohl Owned by: ohl
Priority: P4 Milestone: v2.6.0
Component: omega Version: 2.0.0rc2
Severity: major Keywords: omega leading color
Cc:

Description

Leading color ist trivial in O'Mega: just disable the U(1) ghosts and off-diagonal color factors. This is useful beyond the speed-up for matching to parton showers and fragmentation.

Higher orders in the 1/N_C expansion require help from the Fusion functor and could be a good test case for the tagging mechanism. It is not clear that next-to-leading-color is much faster than the full calculation. Therefore it is not clear that implementing the 1/N_C expansion beyond leading order is useful.

Change History (7)

comment:1 Changed 15 years ago by ohl

Status: new → assigned

comment:2 Changed 15 years ago by ohl

Priority: P2 → P4

comment:3 Changed 15 years ago by ohl

Probably not useful.

comment:4 Changed 14 years ago by Juergen Reuter

Milestone: v2.1.0 → v2.1.1

comment:5 Changed 13 years ago by ohl

Resolution: → wontfix
Status: assigned → closed

comment:6 Changed 8 years ago by Juergen Reuter

Milestone: v2.4.0 → v2.5.0

Milestone renamed

comment:7 Changed 8 years ago by Juergen Reuter

Milestone: v2.5.0 → v2.6.0

Milestone renamed

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