This article proves through a very simple derivation that p=0 condensate can not  exist in a system like He-II  or the BEC state of a trapped dilute gas. It identifies the correct nature of BEC that exists in these systems.  The laws of nature do not allow the existence of p=0 condensate.  This explains why should we need a new theory (such as the first article posted by us on this site) of superfluidity and related aspects of He-II or similar systems.  I invite all interested to discuss and debate this development to conclude the long awaited microscopic theory of He-II.  

- Yatendra S Jain