Re: Renormalization

From: Igor Khavkine (igor.kh_at_gmail.com)
Date: 03/30/05 

Date: Wed, 30 Mar 2005 00:40:26 +0000 (UTC)

On 2005-03-24, Eugene Stefanovich <eugenev@synopsys.com> wrote:
> Igor Khavkine wrote:
>> On Tue, 22 Mar 2005 08:18:53 +0000, Eugene Stefanovich wrote:
>>
>>>Igor Khavkine wrote:

Regarding finite time calculations:

>>>>The procedure is the same as for standard perturbation theory however,
>>>>the upper limit on the time integrals is kept finite instead of
>>>>infinite.

[...]

> I fail to see how your 8-step procedure is going to work when at each
> step you face infinite linear combinations whose coefficients
> are infinite (in the limit of infinite cutoff). I am sure that these
> infinities would not cancel when you come to step 8.

Have you tried it? Otherwise you should not be so quick to dismiss it.
I don't have time to do this calculation myself. But, if you are
willing, I can tell you exactly what to do.

Igor

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