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Berry Phases in Electronic Structure Theory
An introduction to the role of Berry phases in our modern understanding of the physics of electrons in solids.
Berry Phases in Electronic Structure Theory
Over the past twenty-five years, mathematical concepts associated with geometric phases have come to occupy a central place in our modern understanding of the physics of electrons in solids. These 'Berry phases' describe the global phase acquired by a quantum state as the Hamiltonian is changed. Beginning at an elementary level, this book provides a pedagogical introduction to the important role of Berry phases and curvatures, and outlines their great influence upon many key properties of electrons in solids, including electric polarization, anomalous Hall conductivity, and the nature of the topological insulating state. It focuses on drawing connections between physical concepts and provides a solid framework for their integration, enabling researchers and students to explore and develop links to related fields. Computational examples and exercises throughout provide an added dimension to the book, giving readers the opportunity to explore the central concepts in a practical and engaging way.
Physics of Ferroelectrics
The past two decades have witnessed revolutionary breakthroughs in the understanding of ferroelectric materials, both from the perspective of theory and experiment. This book addresses the paradigmatic shifts in understanding brought about by these breakthroughs, including the consideration of novel fabrication methods and nanoscale applications of these materials, and new theoretical methods such as the effective Hamiltonian approach and density functional theory.
Creative People Must Be Stopped
A framework for overcoming the six types of innovation killers Everybody wants innovation—or do they? Creative People Must Be Stopped shows how individuals and organizations sabotage their own best intentions to encourage "outside the box" thinking. It shows that the antidote to this self-defeating behavior is to identify which of the six major types of constraints are hindering innovation: individual, group, organizational, industry-wide, societal, or technological. Once innovators and other leaders understand exactly which constraints are working against them and how to overcome them, they can create conditions that foster innovation instead of stopping it in its tracks. The author's mod...
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The Politics of Presidential Appointments
In the wake of Hurricane Katrina, many questioned whether the large number of political appointees in the Federal Emergency Management Agency contributed to the agency's poor handling of the catastrophe, ultimately costing hundreds of lives and causing immeasurable pain and suffering. The Politics of Presidential Appointments examines in depth how and why presidents use political appointees and how their choices impact government performance--for better or worse. One way presidents can influence the permanent bureaucracy is by filling key posts with people who are sympathetic to their policy goals. But if the president's appointees lack competence and an agency fails in its mission--as with ...
The Practical Christology of Philoxenos of Mabbug
This book examines doctrinal conflicts concerning the dual nature of Christ in the period after the Council of Chalcedon by considering the life and works of Philoxenos of Mabbug (c.440-523), a Syriac theologian whose surviving corpus amounts to some 500,000 words.
The Tyranny of the Meritocracy
A fresh and bold argument for revamping our standards of “merit” and a clear blueprint for creating collaborative education models that strengthen our democracy rather than privileging individual elites Standing on the foundations of America’s promise of equal opportunity, our universities purport to serve as engines of social mobility and practitioners of democracy. But as acclaimed scholar and pioneering civil rights advocate Lani Guinier argues, the merit systems that dictate the admissions practices of these institutions are functioning to select and privilege elite individuals rather than create learning communities geared to advance democratic societies. Having studied and taught...
