Non-existence of Goldstone bosons with non-zero helicity
نویسندگان
چکیده
منابع مشابه
Goldstone Bosons
The paper concerns the effective field theory methods used to study the low energy structure of systems with a spontaneously broken symmetry. I first explain how the method works in the context of quantum chromodynamics and then discuss a few general aspects, related to the universality of effective theories. In particular, I compare some of the effective field theories used in condensed matter...
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The implications of the hidden, spontaneously broken symmetry for the properties of the sound waves of a solid are analyzed. Although the discussion does not go beyond standard wisdom, it presents some of the known results from a different perspective. In particular, I argue that, as a consequence of the hidden symmetry, the equations of motion for a sound wave necessarily contain nonlinear ter...
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We develop various complementary concepts and techniques for handling quantum fluctuations of Goldstone bosons.We emphasise that one of the consequences of the masslessness of Goldstone bosons is that the longitudinal fluctuations also have a diverging susceptibility characterised by an anomalous dimension (d−2) in space-time dimensions 2 < d < 4.In d = 4 these fluctuations diverge logarithmica...
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In the strong interaction spectrum the pion is identified as both a Goldstone mode, associated with Dynamical Chiral Symmetry Breaking (DCSB), and a bound state composed of uand d-quarks. This dichotomy is remarkable because, while mρ/2 ∼ mN/3 ∼ 350 MeV=: Mq, the constituent quark mass, mπ/2 is only ≈ 0.2Mq; i.e., the pion is much lighter than comparable bound states. Mq is the “effective mass”...
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ژورنال
عنوان ژورنال: Communications in Mathematical Physics
سال: 1971
ISSN: 0010-3616,1432-0916
DOI: 10.1007/bf01907035