Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/171415
Title: | Vacuum decay in the presence of gravity |
Author: | Planella Planas, Guim |
Director/Tutor: | Garriga Torres, Jaume |
Keywords: | Buit Teoria de camps Treballs de fi de grau Vacuum Field theory Bachelor's theses |
Issue Date: | Jun-2020 |
Abstract: | In this paper, two mechanisms for vacuum decay in field theory are compared. First, using the Coleman-de Lucia method, the transition probability between two non-degenerate vacua is computed. Then this calculation is repeated according to the newly proposed yover method. For this purpose, a numerical simulation is used which solves Einstein's equation for a spherically symmetric metric and with a scalar field as a source. The obtained result shows the yover decay is dominant for a certain parametric range and it has a larger probability of upward transitions relative to CdL |
Note: | Treballs Finals de Grau de Física, Facultat de Física, Universitat de Barcelona, Curs: 2020 Tutor: Jaume Garriga Torres |
URI: | http://hdl.handle.net/2445/171415 |
Appears in Collections: | Treballs Finals de Grau (TFG) - Física |
Files in This Item:
File | Description | Size | Format | |
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PLANELLA PLANAS GUIM_1338760_assignsubmission_file_tfg.pdf | 3.36 MB | Adobe PDF | View/Open |
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