1. De Sitter Vacua and N=2 Supergravity Open Access Author: Ogetbil, Orcan Bahri Title: De Sitter Vacua and N=2 Supergravity Graduate Program: Physics Keywords: N=2Supergravityde Sittervacuaground statescosmological constantvacuum energy File: Download Orcan-Dissertation.pdf Committee Members: Murat Gunaydin, Committee Chair/Co-ChairRichard Wallace Robinett, Committee MemberLuen Chau Li, Committee MemberRadu Roiban, Committee Member