Renormalization Group Theory

Name: Renormalization Group Theory
Brand: Springer, Berlin
SKU: 9783642024863
Price: 70208 HUF
Availability: InStock

Impact on Experimental Magnetism

Szerző: Ulrich Köbler, Andreas Hoser

Nyelv:

Kötés: Kemény kötésű

Kiadó: Springer, Berlin

Elérhetőség: 50 % esély

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Spin wave theory of magnetism and BCS theory of superconductivity are typical theories of the time b...

Információk a könyvről

Szerző

Ulrich Köbler, Andreas Hoser

Nyelv

Angol

Kötés

Könyv - Kemény kötésű

Kiadva

2009

oldal

394

EAN

9783642024863

ISBN

3642024866

Enbook ID

01649973

Kiadó

Springer, Berlin

Súly

856

Méretek

155 x 235 x 28

Teljes leírás

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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Renormalization Group Theory

Impact on Experimental Magnetism

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Teljes leírás

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