Supersymmetry, Supergravity, and Strings

本研究的目的是在理论粒子物理领域研究超对称和超引力的各个方面，这是描述和分析超弦理论的主要成分。超弦理论是研究物质基本成分以及它们之间所有力（包括引力）的统一的主要候选理论。超弦理论的可行性关键取决于超对称的存在，这个概念告诉我们，在某些基本层面上，基本粒子虽然表面上的性质不同，但它们有一个潜在的同一性，这使得它们可以被认为是一个单一实体的不同方面。通过研究超对称理论，其中超引力与弦理论有关，我们学会了如何分析它，如何进行计算并获得信息，这些信息最终将使我们能够确认，通过这个美丽的理论，我们确实达到了理解自然如何在最基本的层面上运作的目标。

The purpose of this research in the area of theoretical particle physicsis to study aspects of supersymmetry and supergravity, which are mainingredients in the description and analysis of superstring theory.Superstring theory is the major candidate theory for the study of thefundamental constituents of matter as well as the unification of all the forces between them, including gravity. The viability of superstringtheory depends crucially on the existence of supersymmetry, a conceptthat tells us that at some fundamental level elementary particles, thoughsuperficially distinct in their properties, share an underlying identitywhich allows them to be considered as different facets of a singleentity. By studying supersymmetric theories, of which supergravityis the one relevant for string theory, we learn how to analyze it and howto perform calculations and gain information which ultimatelywill allow us to confirm that with this beautiful theory we haveindeed reached the goal of understanding how Nature works at the mostbasic level.