Elementary Particles, Nuclei and Relativity

拟议的研究涉及核现象学、粒子现象学、弦理论和宇宙学的研究。我们建议用有效场论的方法来发展最一般的核子-核子宇称破坏势。我们建议研究虚康普顿散射，这是理解强子结构的重要工具。这将使用光锥方法来完成。我们建议研究手征微扰理论中的高阶项和电弱过程的图示，例如所谓的企鹅图示。数值格点规范计算正在得到改进，现在可以处理一些非微扰效应，例如对电弱衰变的QCD修正。我们建议使用这些手征微扰理论技术来扩充现有的格点规范计算。我们还将研究魅力-反魅力介子混合，这是目前实验感兴趣的一种违反CP的现象。我们打算通过研究快子的拓扑孤子来研究弦理论中快子不稳定性的命运。

The proposed research involves research in Nuclear Phenomenology, Particle Phenomenology, String Theory and Cosmology. We propose to develop the most general Nucleon -Nucleon parity violating potential using an effective field theory approach. We propose to study virtual Compton scattering, which is an important tool for understanding hadronic structure. This will be done using light-cone methods. We propose to investigate higher-order terms in chiral perturbation theory and diagrams for electroweak processes, such as the so-called penguin diagrams. Numerical lattice gauge calculations are being improved, and can now treat a number of nonperturbative effects, such as QCD corrections to electroweak decays. We propose to use these chiral perturbation theory techniques to augment present lattice gauge calculations. We will also study charm-anticharm meson mixing, a CP-violating phenomenon which is of current experimental interest. We intend to study the fate of tachyonic instabilities in string theory by studying topological solitons for orbifold tachyons.