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1. |
Record Nr. |
UNINA9910736976203321 |
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Autore |
Das Tapan Kumar |
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Titolo |
Hyperspherical Harmonics Expansion Techniques [[electronic resource] ] : Application to Problems in Physics / / by Tapan Kumar Das |
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Pubbl/distr/stampa |
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New Delhi : , : Springer India : , : Imprint : Springer, , 2016 |
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ISBN |
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Edizione |
[1st ed. 2016.] |
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Descrizione fisica |
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1 online resource (170 p.) |
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Collana |
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Theoretical and Mathematical Physics, , 1864-5879 |
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Disciplina |
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Soggetti |
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Physics |
Nuclear physics |
Heavy ions |
Mathematical physics |
Numerical and Computational Physics, Simulation |
Nuclear Physics, Heavy Ions, Hadrons |
Mathematical Methods in Physics |
Mathematical Physics |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Description based upon print version of record. |
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Nota di bibliografia |
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Includes bibliographical references and index. |
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Nota di contenuto |
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Introduction -- Systems of One or More Particles -- Three-body System -- General Many-body Systems.- The Trinucleon System -- Application to Coulomb Systems -- Potential Harmonics -- Application to Bose-Einstein Condensates -- Integro-differential Equation -- Computational Techniques. |
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Sommario/riassunto |
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The book provides a generalized theoretical technique for solving the fewbody Schrödinger equation. Straight forward approaches to solve it in terms of position vectors of constituent particles and using standard mathematical techniques become too cumbersome and inconvenient when the system contains more than two particles. The introduction of Jacobi vectors, hyperspherical variables and hyperspherical harmonics as an expansion basis is an elegant way to tackle systematically the problem of an increasing number of interacting particles. Analytic expressions for hyperspherical harmonics, appropriate symmetrisation of the wave function under exchange of identical particles and calculation of matrix elements of the interaction have been presented. |
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Applications of this technique to various problems of physics have been discussed. In spite of straight forward generalization of the mathematical tools for increasing number of particles, the method becomes computationally difficult for more than a few particles. Hence various approximation methods have also been discussed. Chapters on the potential harmonics and its application to Bose-Einstein condensates (BEC) have been included to tackle dilute system of a large number of particles. A chapter on special numerical algorithms has also been provided. This monograph is a reference material for theoretical research in the few-body problems for research workers starting from advanced graduate level students to senior scientists. |
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2. |
Record Nr. |
UNINA9910828514503321 |
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Autore |
Useem Michael |
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Titolo |
Leadership dispatches : Chile's extraordinary comeback from disaster / / Michael Useem, Howard Kunreuther, and Erwann Michel-Kerjan |
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Pubbl/distr/stampa |
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Stanford, California : , : Stanford Business Books, , 2015 |
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©2015 |
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ISBN |
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Descrizione fisica |
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1 online resource (292 pages) : illustrations, photographs, tables |
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Collana |
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High Reliability and Crisis Management |
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Disciplina |
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Soggetti |
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Chile Earthquake, Chile, 2010 (February 27) |
Earthquake relief - Chile |
Emergency management - Chile |
Leadership - Chile |
Chile Economic conditions 21st century |
Chile Politics and government 21st century |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Bibliographic Level Mode of Issuance: Monograph |
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Nota di bibliografia |
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Includes bibliographical references and index. |
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Nota di contenuto |
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Front matter -- Contents -- Prologue: A Quiet Summer Evening -- 1. Twelve Days before Entering the Presidential Office -- 2. One of the Most Intense Events Ever Recorded -- 3. First Order of Business -- 4. Frameworks for Action -- 5. Presidential Leadership -- 6. Tiered |
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Leadership -- 7. Financing Recovery -- 8. Insurance Payouts for Recovery -- 9. Private Giving for Recovery -- 10. Execution and Expectations -- 11. Vulnerability and Readiness -- 12. Civil Action -- 13. Long-term Disaster Recovery -- 14. Rescuing Thirty-three Miners -- 15. Leadership Dispatches -- Epilogue: A Quiet Summer Afternoon -- List of Tables, Figures, and Photographs -- Note -- References -- Individuals Interviewed -- Acknowledgments -- About the Authors -- Index |
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Sommario/riassunto |
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On February 27, 2010, Chile was rocked by a violent earthquake five hundred times more powerful than the one that hit Haiti just six weeks prior. The Chilean earthquake devastated schools, hospitals, roads, and homes, paralyzing the country for weeks and causing economic damage that was equal to 18 percent of Chile's GDP. This calamity hit just as an incumbent political regime was packing its bags and a new administration was preparing to take office. For most countries, it would have taken years, if not decades, to recover from such an event. Yet, only one year later, Chile's economy had reached a six percent annual growth rate. In Leadership Dispatches, Michael Useem, Howard Kunreuther, and Erwann Michel-Kerjan look at how the nation's leaders—in government, business, religion, academia, and beyond—facilitated Chile's recovery. They attribute Chile's remarkable comeback to a two-part formula consisting of strong national leadership on the one hand, and deeply rooted institutional practices on the other. Coupled with strategic, deliberative thinking, these levers enabled Chile to bounce back quickly and exceed its prior national performance. The authors make the case that the Chilean story contains lessons for a broad range of organizations and governments the world over. Large-scale catastrophes of many kinds—from technological meltdowns to disease pandemics—have been on the rise in recent years. Now is the time to seek ideas and guidance from other leaders who have triumphed in the wake of a disaster. In this vein, Leadership Dispatches is both a remarkable story of resilience and an instructive look at how those with the greatest responsibility for a country, company, or community should lead. |
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