The Schrödinger's Cat Trilogy is a trilogy of novels by American writer Robert Anton Wilson consisting of The Universe Next Door (1979), The Trick Top Hat (1980), and The Homing Pigeons (1981), each illustrating a different interpretation of quantum physics. They were collected into an omnibus edition in 1988.
Wilson is also co-author of The Illuminatus! Trilogy (1975), and Schrödinger's Cat is a sequel of sorts, re-using several of the same characters and carrying on many of the themes of the earlier work.
The name Schrödinger's Cat comes from a thought experiment in quantum mechanics. The first book, The Universe Next Door, takes place in different universes in accord with the many worlds interpretation of quantum physics; in the second, The Trick Top Hat, characters are unknowingly connected through non-locality, i.e., having once crossed paths they are joined in quantum entanglement; and the third book, The Homing Pigeons, places characters in an "observer-created universe" in which consciousness causes the collapse of the wavefunction.
Taking place in Unistat, which is the novel's parallel to the United States, the novels have intertwining plots involving a wide array of characters, including:
Epicene Wildeblood, a.k.a. Mary Margaret Wildeblood, a transsexual woman who throws great parties
Frank Dashwood, president of Orgasm Research
Markoff Chaney, a prankster
Hugh Crane, a.k.a. Cagliostro the Great, a mystic and magician
Furbish Lousewart V, author and President of Unistat
Marvin Gardens, author and cocaine addict
Eve Hubbard, scientist and alternate President of Unistat
In The Universe Next Door, the President of Unistat is Furbish Lousewart V; in that universe, a terrorist organization known as Purity of Essence (named after General Ripper's obsession in the film Dr. Strangelove) threatens to detonate nuclear devices in major cities all over Unistat. Also mirroring Dr. Strangelove, Unistat has an automated device that will send nuclear missiles to Russia in the event of such an attack.