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Explore the concept of de Sitter space as an excited state in string theory during this 42-minute conference talk delivered by Keshav Dasgupta at the Erwin Schrödinger International Institute for Mathematics and Physics. Delve into the reasons why four-dimensional de Sitter space exists only as an excited state and not as a vacuum state in string theory. Examine the unique characteristics of this state, known as a Glauber-Sudarshan state, and understand how it differs from a typical coherent state. Gain insights into cutting-edge research in theoretical physics as part of the Thematic Programme on "The Landscape vs. the Swampland." For a deeper understanding, consider reading section 8.1 of the speaker's recent paper (2404.11680) before attending the talk.
