ar X iv : h ep - p h / 92 10 24 8 v 1 2 0 O ct 1 99 2 NUCLEAR AXIAL - CHARGE TRANSITIONS IN CHIRAL PERTURBATION THEORY

ar X iv : h ep - p h / 97 10 54 8 v 1 3 0 O ct 1 99 7 Chiral Perturbation Theory and Nucleon Polarizabilities ∗

Compton scattering offers in principle an intriguing new window on nucleon structure. Existing experiments and future programs are discussed and the state of theoretical understanding of such measurements are explored. Research supported in part by the National Science Foundation

ar X iv : h ep - p h / 92 10 24 7 v 1 1 9 O ct 1 99 2 The Perturbative Onset of Multiparticle Production in Weak Interactions ∗

We use perturbation theory to estimate the energy scale beyond which multiparticle final states become a dominant feature of high energy weak interactions. Using estimates from a weak parton model and comparing two, three and four body final states we deduce that multiparticle states become important at energy scales in the range 10 7 − 10 9 GeV.

ar X iv : h ep - p h / 02 10 07 4 v 1 4 O ct 2 00 2 Effective vertex for π 0 γγ §

The π 0 γγ vertex is used as an explicit example of the subtleties connected with the application of equation of motion within Chiral Perturbation Theory at the order O(p 6).

ar X iv : h ep - p h / 92 11 23 8 v 1 1 1 N ov 1 99 2 Properties of perturbative multi - particle amplitudes in φ k and O ( N ) theories

ar X iv : h ep - p h / 97 10 46 8 v 1 2 4 O ct 1 99 7 Connections Between Lattice Gauge Theory and Chiral Perturbation Theory

In this talk, I address the comparison between results from lattice QCD computations and Chiral Perturbation Theory (ChPT). I briefly discuss how ChPT can be adapted to the much-used quenched approximation and what it tells us about the special role of the η ′ in the quenched theory. I then review lattice results for some quantities (the pion mass, pion scattering lengths and the K + → π + π 0 ...