Conformal Invariance and Liouville Field Theory

• Ano de defesa: 2015
• Autor(a) principal: Díaz, Laura Raquel Rado
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: eng
• Instituição de defesa: Biblioteca Digitais de Teses e Dissertações da USP
• Palavras-chave em Português: Analytic Continuation; Conformal Field Theory; Continuação Analítica ,Teoria de Liouville Time-like; Liouville Field Theory; Modelo de Wess-Zumino-Witten.; Teoria de Campo Conforme; Teoria de Campo de Liouville; Time-like Liouville Theory; Wess-Zumino-Witten model.
• Link de acesso: http://www.teses.usp.br/teses/disponiveis/43/43134/tde-03072015-145107/

In this work, we make a brief review of the Conformal Field Theory in two dimensions,in order to understand some basic definitions in the study of the Liouville Field Theory, which has many application in theoretical physics like string theory, general relativity and supersymmetric gauge field theories. In particular, we focus on the analytic continuation of the Liouville Field Theory, context in which an interesting relation with the Chern-Simons Theory arises as an extension of its well-known relation with the Wess-Zumino-Witten model. Thus, calculating correlation functions by using the complex solutions of the Liouville Theory will be crucial aim in this work in order to test the consistency of this analytic continuation. We will consider as an application the time-like version of the Liouville Theory, which has several applications in holographic quantum cosmology and in studying tachyon condensates. Finally, we calculate the three-point function for the Wess-Zumino-Witten model for the standard Kac-Moody level k > 2 and the particular case 0 < k < 2, the latter has an interpretation in time-dependent scenarios for string theory. Here we will find an analogue relation we find by comparing the correlation function of the time-like and space-like Liouville Field Theory.