The highwire artist of the English novel redraws the romantic triangle for the post-Einsteinian universe, where gender is as elastic as matter, and any accurate Grand Unified Theory (GUT) must encompass desire alongside electromagnetism and gravity. One starry night on a boat in the mid-Atlantic, Alice, a brilliant English theoretical physicist, begins an affair with Jove, her remorselessly seductive American counterpart. But Jove is married. When...