标题： 识别渐近展开幅度的区域：基础与最新进展 显示英文标题

标题： Identifying regions for asymptotic expansions of amplitudes: fundamentals and recent advances

摘要： 这篇综述论文讨论了识别区域这一在应用“区域法”技术中的关键第一步。基于牛顿多面体几何的系统方法已被证明对于许多情况是成功且高效的。然而，随着环数增加或特定费曼图拓扑结构的存在，获得正确的区域列表变得越来越微妙。本文探讨了这些细微之处出现的场景，概述了一般策略来解决它们，并回顾了当前对费曼积分各种渐近展开中区域结构的理解。 显示英文摘要

摘要： This review paper discusses the identification of regions, a crucial first step in applying the "method-of-regions" technique. A systematic approach based on Newton polytope geometry has proven successful and efficient for many cases. However, obtaining the correct list of regions becomes increasingly subtle with higher loop numbers or specific Feynman graph topologies. This paper explores the scenarios where such subtleties arise, outlines general strategies to address them, and reviews the current understanding of region structures in various asymptotic expansions of Feynman integrals.