Titlebook: Out of this World; Colliding Universes, Stephen Webb Book 2004 Springer-Verlag Berlin Heidelberg 2004 Big Bang.Gravity.Universe.modern phys

珐琅

The Story of M,lution was fired by Witten on March 14, 1995, when he spoke at the annual gathering of the string community. Witten, building on recent work by several physicists, instigated a change in how we view strings that was perhaps even more important than what Green and Schwarz had proposed a decade earlier.

战胜

Introduction,This book is about some really wild ideas and why a group of sober, professional, extremely intelligent people think there is a chance of these ideas being true.

的染料

The Standard Model,Our present understanding of the microworld is defined in terms of quantum fields and the interactions between them. The best description we have of the fields and their interactions is given by the Standard Model of particle physics.

不规则

Symmetry, appear everywhere in our man-made, artificial world. An everyday example of a polyhedron is a breakfast cereal box: each face of the box is a rectangle (plane polygons with four edges), and the rectangles are joined together at the edges of the box so that it is closed. It is not difficult to see t

dura-mater

Twin Pillars of Physics,erent topics: relativity and quantum mechanics. These two theories are undoubtedly the twin pillars of modern physics, the foundations upon which our contemporary understanding of the Universe is built. And they feel modern, somehow, in that they deal with concepts that are quite unfamiliar to us in

慷慨援助

打火石

Virtues

泥瓦匠

Superstrings,tum field theory and local gauge symmetry, that successfully explains all the particle physics experiments that have ever been performed. But the Standard Model is incomplete: it contains two different sectors that seem to demand unification, and it completely neglects gravity. The first problem is

威胁你

The Story of M,lution was fired by Witten on March 14, 1995, when he spoke at the annual gathering of the string community. Witten, building on recent work by several physicists, instigated a change in how we view strings that was perhaps even more important than what Green and Schwarz had proposed a decade earlie