String theory is a mathematical theory that explains, or tries to combine the Standard Model and the quantum theory of gravity . The problem is that it can’t be tested. implying it’s not scientific.
String theory needs ten or eleven space-time dimensions to work as a mathematical model. The extra six or seven dimensions may either be compactified on a very small scale, or our universe may simply be localized on a dynamical (3+1)-dimensional object, a D3-brane. This opens up the possibility that there are other branes which could support other universes.
Naturally these theories have informed numerous works of fiction such as, China Melvilles, “The City and the City” which includes overlapping dimensions. a kind of Sci-fi version of ‘The Bridge’ where the body of a young woman is found bordering two countries. Melville’s story is a bit more Philip K Dick than Philip Marlow, and gets messier as it goes on.
Then there’s “Magic. A Rough Guide” by Nathan McGrath. This is an indie publication available on all platforms; Apple, Google, Amazon, etc.
It’s premise is that 50 years prior to when the story is set, a accident at CERN sent an explosive pulse through the multiverse ‘branes’. The ‘Resonance’ affected the strings in the quarks/atoms/ DNA of some individuals giving them the ability to pull creatures and energies from those other universes into our own – hence the emergence of ‘Magic’ in our world. It also gave access to countless supernatural creatures who proceeded to live invisibly alongside ordinary people, only visible to the new Magicians.
The accident also wiped out all forms of wireless communications; so no mobile phones, wifi, 4G, 5G, Bluetooth, satellite communications. Even TV remote controls don’t work. This led to the end of air travel.
Governments attempt to control the new powers some people found themselves with led to the ‘War on Magic’.
The setting of the story is a UK where magic is a capital offence punishable by immediate executions, even in public. Girl magicians are born with their powers active. As a result, all newborn girls are tested at birth and magician girls taken away to a prison laboratory to be experimented on.
Magician boys only manifest their condition towards the end of adolescence so are regularly tested. many run away from home before the test. Those tested positive are electronically lobotomised via ‘collar’s that suppress their powers along with their free will.
The early chapters of the story alternate between two very different characters each with their own faults and motivations. Lizzy, a young woman who escapes from a prison ambulance during a transfer from the prison, and Chris, a delinquent young man on the verge of discovering he is a magician.
The book, although a fairly easy read, explores a range of social, philosophical and political themes through the choices, relationships and actions of the characters.