Doubt About D0 Branes: Point Particle & String Theory

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As far as I know a D0 brane is same as a point particle. If that is true then its presence in string theory would go against the very philosophy on which string theory is based (due to presence of 0-dimensional objects). Is my understanding correct? Also it seems to me that D0-D0 brane interactions may lead to divergences in the same way as we face divergences due to point particle interactions under certain circumstances in ordinary quantum field theory. Am I right?
 
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arroy_0205 said:
As far as I know a D0 brane is same as a point particle. If that is true then its presence in string theory would go against the very philosophy on which string theory is based (due to presence of 0-dimensional objects). Is my understanding correct? Also it seems to me that D0-D0 brane interactions may lead to divergences in the same way as we face divergences due to point particle interactions under certain circumstances in ordinary quantum field theory. Am I right?

I do not have an answer to this, but I think since different string theories are related by T-duality, one could get rid of those "particle-like" Branes, turning it into D-Strings.
 

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