An Introduction To Black Holes Information and The String Theory - The Holographic Universe - By Leonard Susskind∗ James Lindesay ( 2005 )

Over the last decade the physics of black holes has been revolutionized by developments that grew out of Jacob Bekenstein`s realization that black holes have entropy. Steven Hawking raised profound issues concerning the loss of information in black hole evaporation and the consistency of quantum mechanics in a world with gravity. ...

For two decades these questions puzzled theoretical physicists and eventually led to a revolution in the way we think about space, time, matter and information. This revolution has culminated in a remarkable principle called "The Holographic Principle", which is now a major focus of attention in gravitational research, quantum field theory and elementary particle physics. Leonard Susskind, one of the co-inventors of the Holographic Principle as well as one of the founders of String theory, develops and explains these concepts.