Andreas Hoser's Books

Renormalization Group Theory

Impact on Experimental Magnetism

By: Ulrich Köbler,Andreas Hoser

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Renormalization Group Theory

Impact on Experimental Magnetism

By: Ulrich Köbler,Andreas Hoser

Spin wave theory of magnetism and BCS theory of superconductivity are typical theories of the time before renormalization group (RG) theory. The two theories consider atomistic interactions only and ignore the energy degrees of freedom of the continuous (infinite) solid. Since the pioneering work of Kenneth G. Wilson (Nobel Prize of physics in 1982) we know that the continuous solid is characterized by a particular symmetry: invariance with respect to transformations of the length scale. Associated with this symmetry are particular field particles with characteristic excitation spectra. In diamagnetic solids these are the well known Debye bosons. This book reviews experimental work on solid state physics of the last five decades and shows in a phenomenological way that the dynamics of ordered magnets and conventional superconductors is controlled by the field particles of the infinite solid and not by magnons and Cooper pairs, respectively. In the case of ordered magnets the relevant field particles are called GSW bosons after Goldstone, Salam and Weinberg and in the case of superconductors the relevant field particles are called SC bosons. One can imagine these bosons as magnetic density waves or charge density waves, respectively. Crossover from atomistic exchange interactions to the excitations of the infinite solid occurs because the GSW bosons have generally lower excitation energies than the atomistic magnons. According to the principle of relevance the dynamics is governed by the excitations with the lowest energy. The non relevant atomistic interactions with higher energy are practically unimportant for the dynamics.

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Page Count

402

Publisher

Springer Science & Business Media

Published Date

ISBN 10

3642024882

ISBN 13

9783642024887

Experimental Studies Of Boson Fields In Solids

By: Ulrich Kobler,Andreas Hoser

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Experimental Studies Of Boson Fields In Solids

By: Ulrich Kobler,Andreas Hoser

This book provides a new understanding of the large amount of experimental results gained in solid state physics during the last seven decades. For more than 160 different materials, data analyses shown in terms of atomistic models (Hamiltonians) have not provided a quantitatively satisfactory description of either excitation spectra or dynamic properties. Instead, the experimental evidences have elaborated that field theories are necessary. However, most experimentalists are not familiar with field theories, and realistic field theories of magnetism are absent.The book illustrates in an empirical way the elements of future field theories of solid state physics with special emphasis on magnetic materials. In contrast to the many available textbooks on quantum field theories that emphasize more on algorithmic formalities rather than referring to the experimental facts, the approach in this book is pragmatic instead of abstract theoretic. This methodical concept considerably facilitates experimentalists to get acquainted with the basic ideas of field theories, even if a ready field theory is not provided by this experimental study.

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Page Count

962

Publisher

World Scientific

Published Date

ISBN 10

9813235500

ISBN 13

9789813235502

Prediction Markets

Fundamentals, Designs, and Applications

By: Stefan Luckner,Jan Schröder,Christian Slamka,Bernd Skiera,Martin Spann,Christof Weinhardt,Andreas Geyer-Schulz,Markus Franke

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Prediction Markets

Fundamentals, Designs, and Applications

By: Stefan Luckner,Jan Schröder,Christian Slamka,Bernd Skiera,Martin Spann,Christof Weinhardt,Andreas Geyer-Schulz,Markus Franke

Accurate predictions are essential in many areas such as corporate decision making, weather forecasting and technology forecasting. Prediction markets help to aggregate information and gain a better understanding of the future by leveraging the wisdom of the crowds. Trading prices in prediction markets thus reflect the traders’ aggregated expectations on the outcome of uncertain future events and can be used to predict the likelihood of these events. This book demonstrates that markets are accurate predictors. Results from several empirical studies reported in this work show the importance of designing such markets properly in order to derive valuable predictions. Therefore, the findings are valuable for designing future prediction markets.

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Page Count

152

Publisher

Springer Science & Business Media

Published Date

ISBN 10

3834970859

ISBN 13

9783834970855

Mapping Sustainable Textile Initiatives in the Nordic Countries

By: Munkholm, Louise,Lindberg Laursen, Betina,Christensen, Anne Carina,Trab Munk Christensen, Anne,Slater Christensen, Bjarke,Dam Larsen, Julie,Tønder, Rasmus Andreas

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Mapping Sustainable Textile Initiatives in the Nordic Countries

By: Munkholm, Louise,Lindberg Laursen, Betina,Christensen, Anne Carina,Trab Munk Christensen, Anne,Slater Christensen, Bjarke,Dam Larsen, Julie,Tønder, Rasmus Andreas

Available online: https://pub.norden.org/temanord2023-502/ This report maps existing initiatives in the Nordic countries supporting the transition towards a sustainable and circular textile economy. The mapping acts as a knowledge base to create recommendations for new initiatives under The Nordic Textile Collaboration, where stakeholders across the Nordic fashion and textile industry can come together and shape the future. The Nordic Textile Collaboration is initiated by Danish, Finnish, Norwegian and Swedish authorities and funded by the Nordic Council of Ministers. The project addresses the significant environmental impacts associated with the production and consumption of textiles, with the aims of reducing unnecessary consumption, extending the lifetime of textiles, promoting circular business models, stimulating digitalization and traceability in the fashion and textile industry, supporting increased and improved collection, sorting, reuse and recycling of textiles.

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Nordic Council of Ministers

Published Date

ISBN 10

9289375159

ISBN 13

9789289375153

Renormalization Group Theory

Impact on Experimental Magnetism

By: Ulrich Köbler,Andreas Hoser

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Renormalization Group Theory

Impact on Experimental Magnetism

By: Ulrich Köbler,Andreas Hoser

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N/A

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Solve jigsaw puzzle

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Page Count

402

Publisher

Springer Science & Business Media

Published Date

ISBN 10

3642024882

ISBN 13

9783642024887

Experimental Studies Of Boson Fields In Solids

By: Ulrich Kobler,Andreas Hoser

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Experimental Studies Of Boson Fields In Solids

By: Ulrich Kobler,Andreas Hoser

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Solve jigsaw puzzle

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Page Count

962

Publisher

World Scientific

Published Date

ISBN 10

9813235500

ISBN 13

9789813235502

Book's by Andreas Hoser

Renormalization Group Theory

Renormalization Group Theory

Experimental Studies Of Boson Fields In Solids

Experimental Studies Of Boson Fields In Solids

Prediction Markets

Prediction Markets

Mapping Sustainable Textile Initiatives in the Nordic Countries

Mapping Sustainable Textile Initiatives in the Nordic Countries

Renormalization Group Theory

Renormalization Group Theory

Experimental Studies Of Boson Fields In Solids

Experimental Studies Of Boson Fields In Solids

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