Simple Models of Many-Fermion Systems

Simple Models of Many-Fermion Systems
Title Simple Models of Many-Fermion Systems PDF eBook
Author Joachim Alexander Maruhn
Publisher Springer Science & Business Media
Pages 281
Release 2010-05-17
Genre Science
ISBN 3642038395

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The term “ nite Fermi systems” usually refers to systems where the fermionic nature of the constituents is of dominating importance but the nite spatial extent also cannot be ignored. Historically the prominent examples were atoms, molecules, and nuclei. These should be seen in contrast to solid-state systems, where an in nite extent is usually a good approximation. Recently, new and different types of nite Fermi systems have become important, most noticeably metallic clusters, quantum dots, fermion traps, and compact stars. The theoretical description of nite Fermi systems has a long tradition and dev- oped over decades from most simple models to highly elaborate methods of ma- body theory. In fact, nite Fermi systems are the most demanding ground for theory as one often does not have any symmetry to simplify classi cation and as a possibly large but always nite particle number requires to take into account all particles. In spite of the practical complexity, most methods rely on simple and basic schemes which can be well understood in simple test cases. We therefore felt it a timely undertaking to offer a comprehensive view of the underlying theoretical ideas and techniques used for the description of such s- tems across physical disciplines. The book demonstrates how theoretical can be successively re ned from the Fermi gas via external potential and mean- eld m- els to various techniques for dealing with residual interactions, while following the universality of such concepts like shells and magic numbers across the application elds.

Simple Models of Many Fermion Systems

Simple Models of Many Fermion Systems
Title Simple Models of Many Fermion Systems PDF eBook
Author Paul-Gerhard Reinhard
Publisher Wiley-VCH
Pages 270
Release 2008-06-01
Genre Science
ISBN 9783527407316

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Praised by reviewers for clarity, presentation and general concept of teaching, "Simple Models of Many Fermion Systems: With Fortran Codes" provides an undergraduate-accessible route to understanding many-particle systems. The book explains how to develop simplified and generic models enabling the reader to understand the principles and mechanisms, rather than just listing the relevant formulae. Complementing numerical tools help to understand and follow the course, and also meet the need for incorporation of computational physics in modern texts.

Many-body Theory Of Correlated Fermion Systems - Proceedings Of The Vi Hispalensis International Summer School

Many-body Theory Of Correlated Fermion Systems - Proceedings Of The Vi Hispalensis International Summer School
Title Many-body Theory Of Correlated Fermion Systems - Proceedings Of The Vi Hispalensis International Summer School PDF eBook
Author Jose M Arias
Publisher World Scientific
Pages 370
Release 1998-05-30
Genre
ISBN 9814545171

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The structure of matter is intimately related to the fundamental role played by many-fermion systems. The development in the last few decades of the microscopic many-body theory of correlated fermion systems has been a fertile ground not only for spectacular achievements in basic science in various areas of research, but also for technological applications. Among the numerous phenomena discovered and studied in systems of many fermions, one can cite the superconductivity in metals, the superfluidity in 3He, nuclear matter and nuclei, the quantum Hall effect, the giant resonances in nuclei, the Anderson location and the metal-insulator transition, hole and electron diffusion in doped semiconductors, etc. All these phenomena can be understood only in terms of correlations occurring in many-fermion systems, and the formulation of the correct microscopic theory of each phenomenon has marked a milestone in pure science as well as the starting point for the exploitation of its potential technological applications. It is likely that in the future further developments will take place in this field of basic science.The Hispalensis International School is a summer school aimed mainly at young physicists, both theoreticians and experimentalists, engaged in research work at the predoctoral or recent postdoctoral level. The objective of the School provide an opportunity for participants to come into contact with experienced researchers and hear their clear account of the state of the art of many-body theories in nuclear physics, as well as in related fields, and the main future lines of development.

The Continuum Limit of Causal Fermion Systems

The Continuum Limit of Causal Fermion Systems
Title The Continuum Limit of Causal Fermion Systems PDF eBook
Author Felix Finster
Publisher Springer
Pages 554
Release 2016-08-19
Genre Science
ISBN 3319420674

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This monograph introduces the basic concepts of the theory of causal fermion systems, a recent approach to the description of fundamental physics. The theory yields quantum mechanics, general relativity and quantum field theory as limiting cases and is therefore a candidate for a unified physical theory. From the mathematical perspective, causal fermion systems provide a general framework for describing and analyzing non-smooth geometries and "quantum geometries". The dynamics is described by a novel variational principle, called the causal action principle. In addition to the basics, the book provides all the necessary mathematical background and explains how the causal action principle gives rise to the interactions of the standard model plus gravity on the level of second-quantized fermionic fields coupled to classical bosonic fields. The focus is on getting a mathematically sound connection between causal fermion systems and physical systems in Minkowski space. The book is intended for graduate students entering the field, and is furthermore a valuable reference work for researchers in quantum field theory and quantum gravity.

Heavy-Fermion Systems

Heavy-Fermion Systems
Title Heavy-Fermion Systems PDF eBook
Author Prasanta Misra
Publisher Elsevier
Pages 353
Release 2007-12-11
Genre Science
ISBN 0080554679

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The book on Heavy-Fermion Systems is a part of the Book series "Handbook of Metal Physics", each volume of which is written to facilitate the research of Ph.D. students, faculty and other researchers in a specific area. The Heavy-Fermions (sometimes known as Heavy-Electrons) is a loosely defined collection of intermetallic compounds containing rare-earth (mostly Ce) or actinide (mostly U) elements. These unusual names were given due to the large effective mass (100-1,000 times greater than the mass of a free electron) below a critical temperature. They have a variety of ground states including superconducting, antiferromagnetic, paramagnetic or semiconducting. Some display unusual magnetic properties such as magnetic quantum critical point and metamagnetism. This book is essentially a summary as well as a critical review of the theoretical and experimental work done on Heavy Fermions.· Extensive research references.· Comprehensive review of a very rapidly growing number of theories.· Summary of all important experiments.· Comparison with other highly correlated systems such as High-Tc Superconductors.· Possible Technological applications.

International Conference on Squeezed States and Uncertainty Relations

International Conference on Squeezed States and Uncertainty Relations
Title International Conference on Squeezed States and Uncertainty Relations PDF eBook
Author
Publisher
Pages 722
Release 1997
Genre Lasers
ISBN

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An Introduction to Nuclear Fission

An Introduction to Nuclear Fission
Title An Introduction to Nuclear Fission PDF eBook
Author Walid Younes
Publisher Springer Nature
Pages 198
Release 2021-11-15
Genre Science
ISBN 3030845923

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This hands-on textbook introduces physics and nuclear engineering students to the experimental and theoretical aspects of fission physics for research and applications through worked examples and problem sets. The study of nuclear fission is currently undergoing a renaissance. Recent advances in the field create the opportunity to develop more reliable models of fission predictability and to supply measurements and data to critical applications including nuclear energy, national security and counter-proliferation, and medical isotope production. An Introduction to Nuclear Fission provides foundational knowledge for the next generation of researchers to contribute to nuclear fission physics.