On the 75th anniversary of the dropping of the atomic bomb, Hugo and Nebula-winning author Robert J. Sawyer takes us back in time to revisit history...with a twist. While J. Robert Oppenheimer and his Manhattan Project team struggle to develop the A-bomb, Edward Teller wants something even more devastating: a bomb based on nuclear fusion―the mechanism that powers the sun. Teller's research leads to a terrifying discovery: by the year 2030, the sun will eject its outermost layer, destroying the entire inner solar system―including Earth. As the war ends with the use of fission bombs against Japan, Oppenheimer's team, plus Albert Einstein and Wernher von Braun, stay together―the greatest scientific geniuses from the last century racing against time to save our future. Meticulously researched and replete with real-life characters and events, The Oppenheimer Alternative is a breathtaking adventure through both real and alternate history

"Williams's debut novel is hard SF at its best." —Robert J. Sawyer, Hugo Award-winning author of “Quantum Night” “Eternal Shadow reads like a Michael Crichton sci-fi thriller…” 4.5/5 Stars. —San Francisco Review “Fans of the hard science fiction of Andy Weir (The Martian) and Isaac Asimov… will have their eyes glued to the pages.” 4.9/5 Stars. —IndieReader “When apocalyptic disaster looms, humanity turns to science and technology in this well-crafted tale.” —Kirkus Review “…A thoughtful, intelligent portrait of humanity’s first contact with extraterrestrial life.” —Foreward Reviews What would you do if the world was going to end in ten years? For Jennifer Epstein, a by-the-books senior researcher at SETI, there is only one answer: prevent the apocalypse from happening. Pluto, Neptune, and Uranus were destroyed by an alien threat. The deck was stacked against humanity before the cards came out of the box. But Jennifer isn’t alone. She has Samantha Monroe, her excitable but brilliant colleague. From South Africa, CEO Muzikayise Khulu of Khulu Global supplies his vast resources to the ultimate race for survival. The three find themselves in an unlikely alliance while political brinkmanship, doomsday cults, and untested technologies form ever-growing obstacles. Will humanity unite to face the greatest challenge of their time, or will it destroy itself before the alien ship arrives?

New York Times bestselling author Gregory Benford creates an alternate history about the creation of the atomic bomb that explores what could have happened if the bomb was ready to be used by June 6, 1944. Karl Cohen, a chemist and mathematician who is part of The Manhattan Project team, has discovered an alternate solution for creating the uranium isotope needed to cause a chain reaction: U-235. After convincing General Groves of his new method, Cohen and his team of scientists work at Oak Ridge preparing to have a nuclear bomb ready to drop by the summer of 1944 in an effort to stop the war on the western front. What ensues is an altered account of World War II in this taut thriller. Combining fascinating science with intimate and true accounts of several members of The Manhattan Project, The Berlin Project is an astounding novel that reimagines history and what could have happened if the atom bomb was ready in time to stop Hitler from killing millions of people.

INTRODUCING A POWERFUL APPROACH TO DEVELOPING RELIABLE QUANTUM MECHANICAL TREATMENTS OF A LARGE VARIETY OF PROCESSES IN MOLECULAR SYSTEMS. The Born-Oppenheimer approximation has been fundamental to calculation in molecular spectroscopy and molecular dynamics since the early days of quantum mechanics. This is despite well-established fact that it is often not valid due to conical intersections that give rise to strong nonadiabatic effects caused by singular nonadiabatic coupling terms (NACTs). In Beyond Born-Oppenheimer, Michael Baer, a leading authority on molecular scattering theory and electronic nonadiabatic processes, addresses this deficiency and introduces a rigorous approach--diabatization--for eliminating troublesome NACTs and deriving well-converged equations to treat the interactions within and between molecules. Concentrating on both the practical and theoretical aspects of electronic nonadiabatic transitions in molecules, Professor Baer uses a simple mathematical language to rigorously eliminate the singular NACTs and enable reliable calculations of spectroscopic and dynamical cross sections. He presents models of varying complexity to illustrate the validity of the theory and explores the significance of the study of NACTs and the relationship between molecular physics and other fields in physics, particularly electrodynamics. The first book of its king Beyond Born-Oppenheimer: * Presents a detailed mathematical framework to treat electronic NACTs and their conical intersections * Describes the Born-Oppenheimer treatment, including the concepts of adiabatic and diabatic frameworks * Introduces a field-theoretical approach to calculating NACTs, which offers an alternative to time-consuming ab initio procedures * Discusses various approximations for treating a large system of diabatic Schrödinger equations * Presents numerous exercises with solutions to further clarify the material being discussed Beyond Born-Oppenheimer is required reading for physicists, physical chemists, and all researchers involved in the quantum mechanical study of molecular systems.

Calculating God is the new near-future SF thriller from the popular and award-winning Robert J. Sawyer. An alien shuttle craft lands outside the Royal Ontario Museum in Toronto. A six-legged, two-armed alien emerges, who says, in perfect English, "Take me to a paleontologist." It seems that Earth, and the alien's home planet, and the home planet of another alien species traveling on the alien mother ship, all experienced the same five cataclysmic events at about the same time (one example of these "cataclysmic events" would be the meteor that wiped out the dinosaurs). Both alien races believe this proves the existence of God: i.e. he's obviously been playing with the evolution of life on each of these planets. From this provocative launch point, Sawyer tells a fast-paced, and morally and intellectually challenging, SF story that just grows larger and larger in scope. The evidence of God's universal existence is not universally well received on Earth, nor even immediately believed. And it reveals nothing of God's nature. In fact. it poses more questions than it answers. When a supernova explodes out in the galaxy but close enough to wipe out life on all three home-worlds, the big question is, Will God intervene or is this the sixth cataclysm:? Calculating God is SF on the grand scale. Calculating God is a 2001 Hugo Award Nominee for Best Novel. At the Publisher's request, this title is being sold without Digital Rights Management Software (DRM) applied.

Incorporating the Hugo & Nebula award–nominated novella “Identity Theft” The name’s Lomax—Alex Lomax. I’m the one and only private eye working the mean streets of New Klondike, the Martian frontier town that sprang up forty years ago after Simon Weingarten and Denny O’Reilly discovered fossils on the Red Planet. Back on Earth, where anything can be synthesized, the remains of alien life are the most valuable of all collectibles, so shiploads of desperate treasure hunters stampeded here in the Great Martian Fossil Rush. I’m trying to make an honest buck in a dishonest world, tracking down killers and kidnappers among the failed prospectors, the corrupt cops, and a growing population of transfers—lucky stiffs who, after striking paleontological gold, upload their minds into immortal android bodies. But when I uncover clues to solving the decades-old murders of Weingarten and O’Reilly, along with a journal that may lead to their legendary mother lode of Martian fossils, God only knows what I’ll dig up...

Robert J. Sawyer's award-winning science fiction has garnered both popular and critical acclaim. The New York Times Book Review called Frameshift "filled to bursting with ideas, characters and incidents." His novels are fixtures on the Hugo and Nebula ballots. Sawyer now brings us Flashforward, the story of a world-shattering discovery. In pursuit of an elusive nuclear particle, an experiment goes incredibly awry, and, for a few moments, the consciousness of the entire human race is thrown ahead by about twenty years. As the implications truly hit home, the pressure to repeat the experiment builds. Everyone wants a glimpse of their future, a chance to flashforward and see their successes ... or learn how to avoid their failures. Winner of the Aurora Award and the basis for the hit ABC television series. At the Publisher's request, this title is being sold without Digital Rights Management Software (DRM) applied.