5 papers
Pseudoscalar decay constants at large N_c
R. Kaiser, H. Leutwyler
In the large N_c limit, the variables required to analyze the low energy structure of QCD in the framework of an effective field theory necessarily include the degrees of freedom o…
Phonons as Goldstone Bosons
H. Leutwyler
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 wis…
Light Quark Effective Theory
H. Leutwyler
Lecture Notes, Summer School on Effective Theories and Fundamental Interactions, Erice, 1996. The application of effective field theory methods to the low energy structure of QCD i…
The Masses of the Light Quarks
H. Leutwyler
Talk given at the Conference on Fundamental Interactions of Elementary Particles, ITEP, Moscow, Oct. 1995. The paper reviews the current status of knowledge concerning m_u, m_d and…
Goldstone Bosons
H. Leutwyler
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 i…