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1. |
Record Nr. |
UNISA996508670703316 |
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Titolo |
Computer Performance Engineering [[electronic resource] ] : 18th European Workshop, EPEW 2022, Santa Pola, Spain, September 21–23, 2022, Proceedings / / edited by Katja Gilly, Nigel Thomas |
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Pubbl/distr/stampa |
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Cham : , : Springer International Publishing : , : Imprint : Springer, , 2023 |
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ISBN |
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Edizione |
[1st ed. 2023.] |
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Descrizione fisica |
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1 online resource (233 pages) |
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Collana |
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Lecture Notes in Computer Science, , 1611-3349 ; ; 13659 |
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Disciplina |
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Soggetti |
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Data protection |
Computer science—Mathematics |
Mathematical statistics |
Computer networks |
Computers, Special purpose |
Computer systems |
Application software |
Data and Information Security |
Probability and Statistics in Computer Science |
Computer Communication Networks |
Special Purpose and Application-Based Systems |
Computer System Implementation |
Computer and Information Systems Applications |
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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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Nota di contenuto |
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Robustness analysis -- Applications -- Stochastic modelling -- Machine learning -- Edge-cloud computing -- Modelling paradigms and tools. |
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Sommario/riassunto |
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This book constitutes the refereed proceedings of the 18th European Workshop on Computer Performance Engineering, EPEW 2022, held in Santa Pola, Spain, in September 2022. The 14 papers presented in this volume together with one invited talk were carefully reviewed and selected from 14 submissions. The papers presented at the workshop |
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reflect the diversity of modern performance engineering. The sessions covered a wide range of topics including robustness analysis, machine learning, edge and cloud computing, as well as more traditional topics on stochastic modelling, techniques and tools. |
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2. |
Record Nr. |
UNINA9911089150403321 |
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Autore |
Canto Luiz Felipe |
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Titolo |
Scattering theory of molecules, atoms, and nuclei / / Luiz Felipe Canto, Universidade Federal do Rio de Janeiro, Brazil, Mahir S. Hussein, Universidade de Sao Paulo, Brazil |
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Pubbl/distr/stampa |
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New Jersey, : World Scientific, 2013 |
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ISBN |
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1-283-89996-5 |
981-4329-84-3 |
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Edizione |
[1st ed.] |
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Descrizione fisica |
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1 online resource (646 p.) |
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Altri autori (Persone) |
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Disciplina |
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Soggetti |
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Quantum scattering |
Scattering (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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Preface; Acknowledgments; Contents; Part 1: Potential Scattering; 1. Basic Notions; 1.1 Introduction; 1.2 Several definitions; 1.2.1 Types of collisions - reaction channels; 1.2.2 Q-values, threshold, open and closed channels; 1.3 Cross sections; 1.3.1 Center of mass and laboratory frames; 1.4 Classical scattering; 1.4.1 The classical cross section; 1.4.2 Orbiting, rainbow and glory scattering; 1.5 Stationary scattering of a plane wave; 1.6 Scattering of a wave packet; 1.6.1 Propagation of a free wave packet; 1.6.2 Collision of the wave packet with a target; 1.6.3 The Optical Theorem |
1.7 Systems of units1.7.1 Nuclear physics; 1.7.2 Atomic and molecular physics; Exercises; 2. The Partial Wave Expansion Method; 2.1 Free particle in spherical coordinates; 2.2 Numerical solutions of the radial equation; 2.3 Scattering amplitude and cross section; 2.4 Wronskian relations; 2.5 Integral formulae for the phase shifts; 2.6 Convergence of |
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the partial-wave expansion; 2.7 Hard sphere scattering; 2.8 Absolute phase shifts - Levinson Theorem; 2.9 Resonances; 2.9.1 Time delay; 2.10 Scattering from a square-well; 2.11 Low energy scattering; 2.11.1 The scattering length |
2.11.2 The effective range formulaExercises; 3. Coulomb Scattering; 3.1 Classical mechanics description of Coulomb scattering; 3.2 Quantum mechanical description; 3.2.1 The quantum mechanical cross section in Coulomb scattering; 3.3 Partial wave expansion; 3.3.1 Approximate Coulomb phase shifts - asymptotic series; 3.3.2 Some numerical results; 3.3.2.1 Coulomb phase shifts; 3.3.2.2 Coulomb wave functions; 3.3.3 Partial-wave expansion of (+) (k; r); 3.4 Coulomb plus short-range potentials; 3.4.1 An illustration: - scattering; Exercises; 4. Green's Functions, T- and S-Matrices |
4.1 Lippmann-Schwinger equations4.1.1 The free particle Green's function; 4.1.2 The scattering amplitude; 4.1.3 Orthonormality relation for scattering states; 4.1.4 The Moller wave operators; 4.2 The transition and the scattering operators; 4.2.1 The Optical Theorem; 4.2.2 The S-matrix; 4.3 The time-dependent picture; 4.3.1 Time-dependent definition of the scattering operator; 4.3.2 Energy conservation; 4.3.3 Time-reversal; 4.4 Scattering from non-local separable potentials; 4.5 Scattering from the sum of two potentials; 4.5.1 The Gell-Mann Goldberger relations |
4.5.2 The Distorted Wave series4.6 Partial-wave expansions; 4.6.1 Partial-wave projection of the S- and the T-matrices; 4.6.2 The partial-wave projected two-potential formula; 4.7 Long range potentials; 4.8 Evaluation of partial-wave Green's functions; 4.8.1 Free particle's Green's function; 4.8.2 Green's functions for an arbitrary potential; Exercises; 5. Approximate Methods in Potential Scattering; 5.1 Perturbative approximations; 5.1.1 The Born series; 5.1.1.1 Applications of the first Born approximation; 5.1.2 The Distorted Wave Born series; 5.1.2.1 Partial-wave projections |
5.1.2.2 An illustrative application of the DWBA |
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Sommario/riassunto |
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The aim of the book is to give a coherent and comprehensive account of quantum scattering theory with applications to atomic, molecular and nuclear systems. The motivation for this is to supply the necessary theoretical tools to calculate scattering observables of these many-body systems. Concepts which are seemingly different for atomic/molecular scattering from those of nuclear systems, are shown to be the same once physical units such as energy and length are diligently clarified. Many-body resonances excited in nuclear systems are the same as those in atomic systems and come under the name |
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