From pp-Waves to Galilean Spacetimes

• Опубліковано в: : Symmetry, Integrability and Geometry: Methods and Applications
• Дата: 2023
• Автори: Figueroa-O'Farrill, José, Grassie, Ross, Prohazka, Stefan
• Формат: Стаття
• Мова: Англійська
• Опубліковано: Інститут математики НАН України 2023
• Онлайн доступ: https://nasplib.isofts.kiev.ua/handle/123456789/211908
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: From pp-Waves to Galilean Spacetimes. José Figueroa-O'Farrill, Ross Grassie and Stefan Prohazka. SIGMA 19 (2023), 035, 16 pages

We exhibit all spatially isotropic homogeneous Galilean spacetimes of dimension (𝑛 + 1) ≥ 4, including the novel torsional ones, as null reductions of homogeneous pp-wave spacetimes. We also show that the pp-waves are sourced by pure radiation fields and analyse their global properties.