Effective field theory of force-free electrodynamics

The 3d Effective Field Theory for Finite Temperature Scalar Electrodynamics

The effective field theory approach to high temperature field theory can be used to study the phase transition in theories with spontaneously broken symmetry. I construct a sequence of two effective three–dimensional field theories which are valid on successively longer distance scales for a specific model: model: N charged scalars coupled to a U(1) gauge field. The resulting effective Lagrangi...

Reconstruction of Solar Coronal Linear Force-Free Magnetic Field

Sigma exchange in the nuclear force and effective field theory

In the phenomenological description of the nuclear interaction a crucial role is traditionally played by the exchange of a scalar I=0 meson, the sigma, of mass 500-600 MeV, which however is not seen clearly in the particle spectrum and which has a very ambiguous status in QCD. I show that a remarkably simple and reasonably controlled combination of ingredients can reproduce the features of this...

reconstruction of solar coronal linear force-free magnetic field

Effective Field Theory

Attempts to apply effective field theory (EFT) methods to nonrelativistic nucleon-nucleon (N N) scattering have raised questions about the nature and limitations of an EFT expansion when used nonperturbatively. We discuss the characteristics of a meaningful EFT analysis and compare them with traditional approaches to N N scattering. A key feature of an EFT treatment is a systematic expansion in...