More recently, a new generation of high energy accelerators has started to probe yet shorter distances. Those big machines will further scrutinize the "standard model" and most likely uncover new physics that will have to be appended to it. On the side of theory, a breed of "superstring models" has perhaps started a revolution that enthusiasts liken to the early days of quantum mechanics. By replacing the point particle approach with string variables at extremely short distances, they are able to unify "standard model" interactions with quantum gravity, a remarkable feat. In time, such models may radically alter our perception of space-time and cosmology.
In light of the rapid pace of new developments, it is not surprising that most physicists not actively involved in elementary particle research are out of touch with the more modern aspects of the subject and many textbooks are outdated. Concepts of Particle Physics (in two ...