US-India Cooperative Research: Phase Transitions in the Early Universe and Probes of Large Scale Distribution of Matter in the Universe, Award in US and Indian Currencies

描述：这是一个美印合作的研究项目，名为“早期宇宙中的相变和宇宙中物质大规模分布的探测”。该项目将建立在芝加哥大学和塔塔基础研究所（TIFR）于1987年至1992年共同开发的理论天体物理学项目的基础上。目前的项目是由芝加哥大学的David Schramm和班加罗尔印度天体物理研究所的Pijushpani Bhattacharjee指导的。这些模范机构将成为参与者的组织中心，而不是唯一的研究场所。这项研究将建立在早期工作的基础上，早期工作的重点是超新星，后来是夸克-强子相变在早期宇宙和超高能量宇宙射线相互作用中的作用。目前的目标是研究早期宇宙相变的宇宙学和天体物理学意义，特别是拓扑缺陷和电弱重子发生的意义；研究暗物质在银河系中的相空间分布和引力透镜现象，作为暗物质在宇宙中大规模分布的探测。范围：这次合作是由昆士兰大学和印度几位最杰出的天体物理学家早先建立的联合项目的结果。其成果令人印象深刻，其中包括印度PI的开创性工作。该奖项支持印度的几位copi和博士后的短期访问，以及美国小组对印度的访问。除了这项研究有望在基础知识方面取得进展外，与印度宇宙学领袖的思想交流对美国科学界也很有价值。＊＊＊

9605235 Schramm Description: This is a U.S.-India research collaboration entitled Phase Transitions in the Early Universe and Probes of Large Scale Distribution of Matter in the Universe. This project will build on a joint program in theoretical astrophysics developed in 1987 thru 1992 between the University of Chicago and the Tata Institute of Fundamental Research (TIFR). The current project is under the direction of David Schramm, University of Chicago and Pijushpani Bhattacharjee, Indian Institute of Astrophysics (IIA), Bangalore. These nodel institutions will serve as organizational centers rather than sole research venues for the participants. The research will build on the earlier effort which in the beginning had a natural focus on the Supernovae, and later on the role of the quark-hadron phase transition in the early universe and ultra high energy cosmic ray interactions. The current objectives will be to work out cosmological and astrophysical implications of phase transitions in the early universe, particularly the implications of topological defects and electroweak baryogenesis; and to study the phase space distribution of dark matter in the Galaxy and the phenomenon of gravitational lensing as a probe of large-scale distribution of dark matter in the universe. Scope: This collaboration is an outgrowth of an earlier joint program established among several of the most distinguished astrophysicists in the UQ and India. The output has been most impressive including the pioneering work of the Indian PI. This award supports several short-term visits by Indian coPIs and postdocs, as well as visits to India by the US group. In addition to the advances in fundamental knowledge expected from the research, the exchange of ideas with Indian leaders of cosmology will be valuable for the US scientific community. ***