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PLANELLA PLANAS GUIM_1338760_assignsubmission_file_tfg.pdf (3.28 MB)

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Bachelor thesis

Publication date

2020-06

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cc-by-nc-nd (c) Planella, 2020
Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/171415

Vacuum decay in the presence of gravity

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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

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Treballs Finals de Grau de Física, Facultat de Física, Universitat de Barcelona, Curs: 2020 Tutor: Jaume Garriga Torres

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Buit, Teoria de camps, Treballs de fi de grau

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Vacuum, Field theory, Bachelor's theses

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Treballs Finals de Grau (TFG) - Física

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PLANELLA PLANAS, Guim. Vacuum decay in the presence of gravity. [consulted: 7 of October of 2026]. Available at: https://hdl.handle.net/2445/171415

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