Pourquoi y a-t-il des atomes, des planètes et des humains plutôt que rien ? Comment pouvons-nous aimer, créer, croire, agir, penser... alors que notre cerveau est le fruit des lois déterministes de la physique ? La conscience est-elle apparue par la seule grâce du hasard ? Et si les étoiles sont appelées à terme à se consumer, les galaxies à se disperser et les trous noirs à s'évaporer comme l'a prédit Stephen Hawking, quel sens donner à notre existence ?Vulgarisateur hors pair, Brian Greene s'attaque à ces questions profondes en nous contant non seulement l'histoire longue de l'Univers, mais aussi son futur. Du Big Bang jusqu'à la fin des temps, il propose une quête aux confins de la science, interrogeant au passage l'éphémère beauté du monde.Une vertigineuse méditation cosmique par l'un des plus grands physiciens de notre temps.
Au-delà de l'univers connu, il existerait des univers parallèles. Professeur de physique à l'Université de Columbia, spécialiste de la théorie des cordes, B. Greene présente les neuf théories physico-mathématiques qui impliquent l'existence d'un tel concept
Quelle sera la grande aventure de la physique au XXIe siècle ? Plus que jamais les théoriciens sont en quête de la théorie de l'unification de toutes les dimensions de l'Univers, la « théorie du tout ».
Pour les suivre, il faut revenir à la réalité même de notre monde et à ses concepts les plus fondamentaux, tels l'espace, le temps ou le vide. Ces notions n'ont cessé, par le passé, d'exciter imagination, créativité et curiosité des plus grands scientifiques - Newton, Maxwell, Mach, Schrödinger, Dirac, Einstein, Bohr.
Sur les traces de ces penseurs de l'étrange Cosmos qui est le nôtre, Brian Greene dessine la nouvelle réalité du monde telle que la bâtit la physique la plus contemporaine. Nous voici invités à mieux comprendre comment, sinon pourquoi, « les choses sont ce qu'elles sont. »
Le XX? siècle a vu naître les deux plus belles théories physiques jamais inventées. La première, la relativité générale, est l'oeuvre du seul Albert Einstein. Son domaine d'application est l'infiniment grand. La seconde, la mécanique quantique, est l'oeuvre collective de certains des plus grands esprits du XX? siècle. Son domaine d'application est l'infiniment petit. Ces deux théories font de la physique la «reine des sciences». Mais elles sont incompatibles entre elles. Cherche-t-on à les réunir dans ce qu'on appelle «la théorie du tout», on se heurte à d'insurmontables difficultés. Aujourd'hui, la «théorie des cordes» semble en passe de réussir là où toutes les précédentes théories ont échoué : ce faisant, elle bouleverse notre conception de la matière, de l'espace et du temps. C'est l'histoire pleine de rebondissements de cette révolution en marche - où les particules élémentaires s'avèrent semblables à d'infinis bouts de ficelle, où l'espace-temps se déchire, se répare, se replie en dix dimensions invisibles, où le Big-Bang et les trous noirs prennent des formes inattendues - que nous raconte ici l'un de ses éminents acteurs. Après la relativité générale et la mécanique quantique, l'avenir appartient-il à la «théorie des cordes» ?
String theory proclaims that all of the wondrous happenings in the universe are reflections of one grand physical principle and manifestations of one single entity: microscopically tiny vibrating loops of energy. This text relates the scientific story and the human struggle behind this theory.
From the world-renowned physicist and bestselling author of The Elegant Universe and The Fabric of the Cosmos, a captivating exploration of deep time and humanity's search for purposeIn both time and space, the cosmos is astoundingly vast, and yet is governed by simple, elegant, universal mathematical laws.On this cosmic timeline, our human era is spectacular but fleeting. Someday, we know, we will all die. And, we know, so too will the universe itself.Until the End of Time is Brian Greene's breathtaking new exploration of the cosmos and our quest to understand it. Greene takes us on a journey across time, from our most refined understanding of the universe's beginning, to the closest science can take us to the very end. He explores how life and mind emerged from the initial chaos, and how our minds, in coming to understand their own impermanence, seek in different ways to give meaning to experience: in story, myth, religion, creative expression, science, the quest for truth, and our longing for the timeless, or eternal. Through a series of nested stories that explain distinct but interwoven layers of reality-from the quantum mechanics to consciousness to black holes-Greene provides us with a clearer sense of how we came to be, a finer picture of where we are now, and a firmer understanding of where we are headed.Yet all this understanding, which arose with the emergence of life, will dissolve with its conclusion. Which leaves us with one realization: during our brief moment in the sun, we are tasked with the charge of finding our own meaning.Let us embark.>
'A magnificent challenge to conventional ideas' Financial Times 'I thoroughly enjoyed this book. It manages to be both challenging and entertaining: it is highly recommended' the Independent '(Greene) send(s) the reader's imagination hurtling through the universe on an astonishing ride.
B>Instant New York Times Best-sellerbr> b>br> From the world-renowned physicist and best-selling author of The Elegant Universe comes a captivating exploration of deep time and humanity''s search for purpose./b>br>br>/b>"Few humans share Greenes mastery of both the latest cosmological science and English prose."br>--The New York Times (notable book of 2020)br>br> Until the End of Time is Brian Greene''s breathtaking new exploration of the cosmos and our quest to find meaning in the face of this vast expanse. Greene takes us on a journey from the big bang to the end of time, exploring how lasting structures formed, how life and mind emerged, and how we grapple with our existence through narrative, myth, religion, creative expression, science, the quest for truth, and a deep longing for the eternal. From particles to planets, consciousness to creativity, matter to meaning--Brian Greene allows us all to grasp and appreciate our fleeting but utterly exquisite moment in the cosmos.br>b>br>/b>
From the best-selling author of The Elegant Universe and The Fabric of the Cosmos comes his most expansive and accessible book to date -a book that takes on the grandest question: Is ours the only universe?There was a time when "universe" meant all there is. Everything. Yet, in recent years discoveries in physics and cosmology have led a number of scientists to conclude that our universe may be one among many. With crystal-clear prose and inspired use of analogy, Brian Greene shows how a range of different "multiverse" proposals emerges from theories developed to explain the most refined observations of both subatomic particles and the dark depths of space: a multiverse in which you have an infinite number of doppelgängers, each reading this sentence in a distant universe; a multiverse comprising a vast ocean of bubble universes, of which ours is but one; a multiverse that endlessly cycles through time, or one that might be hovering millimeters away yet remains invisible; another in which every possibility allowed by quantum physics is brought to life. Or, perhaps strangest of all, a multiverse made purely of math.Greene, one of our foremost physicists and science writers, takes us on a captivating exploration of these parallel worlds and reveals how much of reality's true nature may be deeply hidden within them. And, with his unrivaled ability to make the most challenging of material accessible and entertaining, Greene tackles the core questio: How can fundamental science progress if great swaths of reality lie beyond our reach?Sparked by Greene's trademark wit and precision, The Hidden Reality is at once a far-reaching survey of cutting-edge physics and a remarkable journey to the very edge of reality -a journey grounded firmly in science and limited only by our imagination.From the Hardcover edition.
A retelling of the Icarus myth follows the starship Proxima on its generations-long odyssey into the farthest reaches of known space and on Icarus's odyssey to explore the mysteries of a black hole, in a scientific fable highlighted by images from the Hubble Space Telescope.
