Hi Thilo. Thank you for very much for drawing my attention Kyle Harper's
The Fate of Rome. I just ordered a copy of the book, hopefully it will arrive before my holidays start so I can have the time to read it. The profound changes in Late
antiquity which led to the early
medieval period is deeply interesting to me. I read
Peter Brown's
The World of Late Antiquity in the 1970's which considered the process as cultural transition, rather than decay and collapse followed by a more technologically and socially primitive replacement culture. I believed
Peter Brown right up until the 1990's, when I realized the archaeological and historical evidence more closely follows the decay and collapse theory prevalent before the 1970's.
There is a book from the 1070's that
still seems to hold up well on the social changes within the the late classical world- John
Holland Smith's
The Death of Classical Paganism. It is out of print but second hand copies are usually available.
best regards,
Steve