The Resource Molecular Symmetry, SuperRotation, and Semiclassical Motion : New Ideas for Solving Old Problems, by Hanno Schmiedt, (electronic resource)
Molecular Symmetry, SuperRotation, and Semiclassical Motion : New Ideas for Solving Old Problems, by Hanno Schmiedt, (electronic resource)
 Summary
 This book presents a range of fundamentally new approaches to solving problems involving traditional molecular models. Fundamental molecular symmetry is shown to open new avenues for describing molecular dynamics beyond standard perturbation techniques. Traditional concepts used to describe molecular dynamics are based on a few fundamental assumptions, the ballandstick picture of molecular structure and the respective perturbative treatment of different kinds of couplings between otherwise separate motions.  The book points out the conceptual limits of these models and, by focusing on the most essential idea of theoretical physics, namely symmetry, shows how to overcome those limits by introducing fundamentally new concepts. The book begins with an introduction to molecular symmetry in general, followed by a discussion of nuclear spin symmetry. Here, a new correlation between identical particle exchange and spin angular momentum symmetry of nuclei is exhibited. The central part of the book is the discussion of extremely floppy molecules, which are not describable in the framework of traditional theories. The book introduces a fundamentally new approach to describing the molecular dynamics of these molecules  the superrotor model, which is based on a fivedimensional symmetry that has never been observed in molecules before. By applying the superrotor theory to the prototype of floppy molecules, protonated methane, this model can consistently predict the symmetry and energy of lowenergy states, which were characterized experimentally only a few years ago. The theoretical predictions agree with the experimental results, which makes the prospect of further developing the superrotor theory and applying it to other molecules a promising one. In the final section, the book also covers the topic of ultrafast rotations, where usual quantum calculations reach their natural limits. A semiclassical method for determining rotational energies, developed in the early 1990s, is shown to be attachable to quantum calculations of the vibrational states. This new combined method is suitable for efficiently calculating rovibrational energies, even for molecular states with large angular momentum. 
 Language
 eng
 Extent
 IX, 171 p. 29 illus., 25 illus. in color.
 Contents

 New Ideas for Solving Old Problems  An Introduction
 Basic Concepts
 SchurWeyl Duality in Molecules
 Reactive Collisions
 Introducing Extreme Floppiness
 Symmetry Beyond Perturbation Theory
 The Molecular Superrotor
 Isbn
 9783319660714
 Label
 Molecular Symmetry, SuperRotation, and Semiclassical Motion : New Ideas for Solving Old Problems
 Title
 Molecular Symmetry, SuperRotation, and Semiclassical Motion
 Title remainder
 New Ideas for Solving Old Problems
 Statement of responsibility
 by Hanno Schmiedt
 Language
 eng
 Summary
 This book presents a range of fundamentally new approaches to solving problems involving traditional molecular models. Fundamental molecular symmetry is shown to open new avenues for describing molecular dynamics beyond standard perturbation techniques. Traditional concepts used to describe molecular dynamics are based on a few fundamental assumptions, the ballandstick picture of molecular structure and the respective perturbative treatment of different kinds of couplings between otherwise separate motions.  The book points out the conceptual limits of these models and, by focusing on the most essential idea of theoretical physics, namely symmetry, shows how to overcome those limits by introducing fundamentally new concepts. The book begins with an introduction to molecular symmetry in general, followed by a discussion of nuclear spin symmetry. Here, a new correlation between identical particle exchange and spin angular momentum symmetry of nuclei is exhibited. The central part of the book is the discussion of extremely floppy molecules, which are not describable in the framework of traditional theories. The book introduces a fundamentally new approach to describing the molecular dynamics of these molecules  the superrotor model, which is based on a fivedimensional symmetry that has never been observed in molecules before. By applying the superrotor theory to the prototype of floppy molecules, protonated methane, this model can consistently predict the symmetry and energy of lowenergy states, which were characterized experimentally only a few years ago. The theoretical predictions agree with the experimental results, which makes the prospect of further developing the superrotor theory and applying it to other molecules a promising one. In the final section, the book also covers the topic of ultrafast rotations, where usual quantum calculations reach their natural limits. A semiclassical method for determining rotational energies, developed in the early 1990s, is shown to be attachable to quantum calculations of the vibrational states. This new combined method is suitable for efficiently calculating rovibrational energies, even for molecular states with large angular momentum. 
 Image bit depth
 0
 Literary form
 non fiction
 Series statement
 Springer Series on Atomic, Optical, and Plasma Physics,
 Series volume
 97
 Label
 Molecular Symmetry, SuperRotation, and Semiclassical Motion : New Ideas for Solving Old Problems, by Hanno Schmiedt, (electronic resource)
 Antecedent source
 mixed
 Carrier category
 online resource
 Carrier category code
 cr
 Carrier MARC source
 rdacarrier
 Color
 not applicable
 Content category
 text
 Content type code
 txt
 Content type MARC source
 rdacontent
 Contents
 New Ideas for Solving Old Problems  An Introduction  Basic Concepts  SchurWeyl Duality in Molecules  Reactive Collisions  Introducing Extreme Floppiness  Symmetry Beyond Perturbation Theory  The Molecular Superrotor
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 unknown
 http://library.link/vocab/discovery_link
 {'f': 'http://opac.lib.rpi.edu/record=b4379962'}
 Extent
 IX, 171 p. 29 illus., 25 illus. in color.
 File format
 multiple file formats
 Form of item
 electronic
 Isbn
 9783319660714
 Level of compression
 uncompressed
 Media category
 computer
 Media MARC source
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 Media type code
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 Other physical details
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<div class="citation" vocab="http://schema.org/"><i class="fa faexternallinksquare fafw"></i> Data from <span resource="http://link.lib.rpi.edu/portal/MolecularSymmetrySuperRotationand/S3_cKxBA_n4/" typeof="WorkExample http://bibfra.me/vocab/lite/Item"><span property="name http://bibfra.me/vocab/lite/label"><a href="http://link.lib.rpi.edu/portal/MolecularSymmetrySuperRotationand/S3_cKxBA_n4/">Molecular Symmetry, SuperRotation, and Semiclassical Motion : New Ideas for Solving Old Problems, by Hanno Schmiedt, (electronic resource)</a></span>  <span property="offers" typeOf="Offer"><span property="offeredBy" typeof="Library ll:Library" resource="http://link.lib.rpi.edu/"><span property="name http://bibfra.me/vocab/lite/label"><a property="url" href="http://link.lib.rpi.edu/">Rensselaer Libraries</a></span></span></span></span></div>