Bose-Einstein condensation of excitons is a unique effect in which the electronic states of a solid can self-organize to acquire quantum phase coherence. The phenomenon is closely linked to Bose-Einstein condensation in other systems such as liquid helium and laser-cooled atomic gases. This is the first book to provide a comprehensive survey of this field, covering theoretical aspects as well as recent experimental work. After setting out the relevant basic physics of excitons, the authors discuss exciton-phonon interactions as well as the behaviour of biexcitons. They cover exciton phase transitions and give particular attention to nonlinear optical effects including the optical Stark effect and chaos in excitonic systems. The thermodynamics of equilibrium, quasi-equilibrium, and nonequilibrium systems are examined in detail. The authors interweave theoretical and experimental results throughout the book, and it will be of great interest to graduate students and researchers in semiconductor and superconductor physics, quantum optics, and atomic physics.
Confidence can't be bought or sold, but it is a skill that can be learned. This easy-to-read, engaging book gives you both the mindset and the practical steps you can take to look and feel more confident when speaking, even if you have a speech tomorrow! You will learn how to: -Speak with Passion -Focus on the Audience -Know Your Material -Use Notes Sparingly -Speak Conversationally -Practice and Rehearse -Stand and Move with Power and Purpose -Smile -Talk from Your Belly Button -Pace with Pauses -Eliminate Filler Words -Prevent Speech Disasters