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http://hdl.handle.net/2445/67405
Title: | Backreaction from non-zero mass conformally coupled scalar fields and the quantum creation of the Universe |
Author: | Mozota Frauca, Àlvaro |
Director/Tutor: | Verdaguer Oms, Enric, 1950- |
Keywords: | Cosmogonia Relativitat (Física) Treballs de fi de grau Cosmogony Relativity (Physics) Bachelor's theses |
Issue Date: | Jun-2015 |
Abstract: | The purpose of this paper is to study the homogeneous backreaction of non-zero mass conformally coupled scalar fields on a cosmological background, including at spacetime, at one-loop order. For this study, the semiclassical Friedmann equation is solved using a method called order reduction. For a nearly at background we get a scale factor that evolves to a stationary scale factor depending on the initial quantum state. We also prove that a de Sitter scale factor is also a mathematical solution of the semiclassical Friedmann equation, and we argue this is a runaway type solution. |
Note: | Treballs Finals de Grau de Física, Facultat de Física, Universitat de Barcelona, Any: 2015, Tutor: Enric Verdaguer |
URI: | http://hdl.handle.net/2445/67405 |
Appears in Collections: | Treballs Finals de Grau (TFG) - Física |
Files in This Item:
File | Description | Size | Format | |
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TFG-Mozota-Frauca-Alvaro.pdf | 223.61 kB | Adobe PDF | View/Open |
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