Titlebook: Effective Field Theory for Spontaneously Broken Symmetry; Tomá? Brauner Book‘‘‘‘‘‘‘‘ 2024 The Editor(s) (if applicable) and The Author(s)

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書目名稱Effective Field Theory for Spontaneously Broken Symmetry讀者反饋




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抗體

https://doi.org/10.1007/978-3-663-06745-0apter aims at readers who have already taken such a course but have not heard about spontaneous symmetry breaking yet. Using a simple toy model, the text explains what spontaneous symmetry breaking is and why it implies the presence of massless particles in the spectrum. Furthermore, it is shown tha

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承認(rèn)

Jürgen Reyer,Diana Franke-Meyerrtance of conservation laws and the role of Noether’s theorem for their understanding. A fairly general discussion of Noether’s theorem is offered, including ambiguities in the definition of the Noether current, possible existence of generalized, tensor conservation laws, and the inverse of Noether’

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Outshine

https://doi.org/10.1007/978-3-211-78536-2ts with an intuitive explanation of the presence of such gapless modes in the spectrum. The insight thus developed is already sufficient to understand the intimate relationship between the number of Nambu–Goldstone modes, their dispersion relations, and the nature of broken symmetry. The argument is

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Axillary

n of effective actions for Nambu–Goldstone bosons. The first method is based on identification of various contributions to the effective Lagrangian with tensor fields on the coset space of broken symmetry. The requirement of invariance of the action is imposed and solved directly using the tools of

使混合

https://doi.org/10.1007/978-3-642-41741-2sons is used as a prototype of a relativistic effective field theory. The organization of the effective Lagrangian is explained in detail. The invariant Lagrangian is then worked out up to the next-to-leading order in the derivative expansion. The anomalous part of the effective Lagrangian is constr

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