"Exactly how does these emotions initiate in human mind and will they be able to create these emotions scientifically?No, they can't."

Yes, they can.
https://www.ncbi.nlm.nih.gov/pubmed/17239106
Abstract
PURPOSE:
To assess the quality and frequency of emotions induced by intracerebral electrical stimulation of the temporal lobe.

But I dont even have to stimulate your brain electrically. You are experiencing anger and some disgust just reading this post, because it challenges your ego-complex. Woops! I just did it again.