This book presents Quantum Mechanics as a theory underlying the world around us, from atoms and molecules to materials, lasers, and other applications. Its features are (a) emphasis on the key principles with minimal mathematical formalism, (b) use of dimensional analysis and order-of-magnitude estimates to develop intuition, (c) comprehensive overview of quantum chemistry and the electronic structure of solids, (d) extensive discussion of the basic processes of lightmatter interactions, and (e) online supplement with advanced theory and multiplechoice quizzes.
 
"A famous joke among physicists is that 'One does not really understand quantum mechanics, but simply gets used to it.' To an undergraduate student being exposed to quantum physics for the first time, this phrase may come very close to how it feels to speak Nature's language of the atomic scale. Trachanas' Quantum Physics aims to remove this feeling and in my opinion it succeeds brilliantly."
Efthimios Kaxiras, Harvard University
 
"Expertly translated, this elegant book by Stefanos Trachanas - a seasoned educator of quantum physics - offers a unique pedagogical approach to quantum mechanics by discussing novel ways to find exact solutions, exploiting useful tools such as dimensional analysis, and providing intuition and physical insight behind the results. Quantum mechanics is a complex field, but this book makes it brilliantly accessible and a delight to learn."
Nader Engheta, University of Pennsylvania