Aspects of type IIA AdS4 orientifold vacua

Tesis Doctoral inédita leída en la Universidad Autónoma de Madrid, Facultad de Ciencias, Departamento de Física Teórica. Fecha de Lectura: 29-09-2022

Detalles Bibliográficos
Autor: Quirant Pellín, Joan
Tipo de recurso: tesis doctoral
Fecha de publicación:2022
País:España
Institución:Universidad Autónoma de Madrid
Repositorio:Biblos-e Archivo. Repositorio Institucional de la UAM
Idioma:inglés
OAI Identifier:oai:repositorio.uam.es:10486/705044
Acceso en línea:http://hdl.handle.net/10486/705044
Access Level:acceso abierto
Palabra clave:Vacío (Física)
Cuerdas, Teoría de las
Física
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spelling Aspects of type IIA AdS4 orientifold vacuaQuirant Pellín, JoanVacío (Física)Cuerdas, Teoría de lasFísicaTesis Doctoral inédita leída en la Universidad Autónoma de Madrid, Facultad de Ciencias, Departamento de Física Teórica. Fecha de Lectura: 29-09-2022In this thesis we explore the vacua structure of type IIA orientifold (CY) compacti-fications with fluxes, both from the 4d and the 10d point of view. We start by reviewing type IIA Calabi-Yau orientifold compactifications with fluxes. First we consider only RR and NSNS fluxes, and then add (non)-geometric fluxes. We recall how the potential created by the fluxes can be rewritten as a bilinear expression, which is very useful to do a systematic search of vacua. We also review the main swampland conjectures that can be applied to these scenarios. Once the basics have been setted, we perform a systematic search of vacua, using directly the 4d effective action and the potential generated. We focus first on the case with only RR and NSNS fluxes. This generalises previous results in the literature, computed in toroidal examples, to any Calabi-Yau orientifold. We obtain several families of SUSY and non-SUSY AdS4 vacua. We study their stability. These vacua have the property that scale separation between the internal radius and the AdS4 radius can be obtained parametrically, tuning the G4 flux. Scale separation is in tension with the strong version of the AdS distance conjecture, we comment on this. We then repeat the same game by including geometric fluxes. We take an ansatz for the geometric fluxes in the vacuum -motivated by stability arguments-and find again several families of SUSY and non-SUSY AdS4 vacua. We check which of them are stable. In this case, we are not able to find a regime with scale separation. We then put on the 10d glasses to analyse from the 10d perspective the SUSY vacua derived in the 4d effective theory. We comment on how an uplift to SU(3) structure manifolds does not exist unless the O6 planes are smeared along the internal dimensions. This is the so-called smeared approximation. Though these results are consistent with the previous literature, it is important to point out that in this case we are not describing the true physical situation, in which the sources must be localised in the internal manifold. We then go beyond this approximation and look for an uplift in SU(3) × SU(3) structure manifolds, considering only the case with RR and NSNS fluxes. To do so, we expand the equations of motion in terms of gs. At zeroth order we recover the smeared approximation. We solve the expansion at first order, where the localised nature of the O6-planes is taken into account -but not the intersecting terms between the different O6-planes, which would appear at next order-. After this, we use the same machinery to study the non-perturbative stability of the family of non-SUSY vacua with only RR and NSNS fluxes characterised by having Gnon-SUSY= −GSUSY 44 (they are perturbatively stable). According to a refined version of the weak gravity conjecture, there should be membranes in the spectrum with Q>T , triggering its decay. We see that D8 branes wrapping the internal manifold with D6 branes ending on them can satisfy this requirement, making these vacua unstable. We finish the thesis by recapping all the results and making some comments about which questions are still open, as well as possible future lines of researchMarchesano Buznego, Fernando G.Departamento de Física TeóricaFacultad de CienciasUAM-CSIC. Instituto de Física Teórica (IFT)20222022-09-29doctoral thesishttp://purl.org/coar/resource_type/c_db06NAhttp://purl.org/coar/version/c_be7fb7dd8ff6fe43info:eu-repo/semantics/doctoralThesisapplication/pdfhttp://hdl.handle.net/10486/705044reponame:Biblos-e Archivo. Repositorio Institucional de la UAMinstname:Universidad Autónoma de MadridInglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:repositorio.uam.es:10486/7050442026-06-23T12:46:27Z
dc.title.none.fl_str_mv Aspects of type IIA AdS4 orientifold vacua
title Aspects of type IIA AdS4 orientifold vacua
spellingShingle Aspects of type IIA AdS4 orientifold vacua
Quirant Pellín, Joan
Vacío (Física)
Cuerdas, Teoría de las
Física
title_short Aspects of type IIA AdS4 orientifold vacua
title_full Aspects of type IIA AdS4 orientifold vacua
title_fullStr Aspects of type IIA AdS4 orientifold vacua
title_full_unstemmed Aspects of type IIA AdS4 orientifold vacua
title_sort Aspects of type IIA AdS4 orientifold vacua
dc.creator.none.fl_str_mv Quirant Pellín, Joan
author Quirant Pellín, Joan
author_facet Quirant Pellín, Joan
author_role author
dc.contributor.none.fl_str_mv Marchesano Buznego, Fernando G.
Departamento de Física Teórica
Facultad de Ciencias
UAM-CSIC. Instituto de Física Teórica (IFT)
dc.subject.none.fl_str_mv Vacío (Física)
Cuerdas, Teoría de las
Física
topic Vacío (Física)
Cuerdas, Teoría de las
Física
description Tesis Doctoral inédita leída en la Universidad Autónoma de Madrid, Facultad de Ciencias, Departamento de Física Teórica. Fecha de Lectura: 29-09-2022
publishDate 2022
dc.date.none.fl_str_mv 2022
2022-09-29
dc.type.none.fl_str_mv doctoral thesis
http://purl.org/coar/resource_type/c_db06
NA
http://purl.org/coar/version/c_be7fb7dd8ff6fe43
dc.type.openaire.fl_str_mv info:eu-repo/semantics/doctoralThesis
format doctoralThesis
dc.identifier.none.fl_str_mv http://hdl.handle.net/10486/705044
url http://hdl.handle.net/10486/705044
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Biblos-e Archivo. Repositorio Institucional de la UAM
instname:Universidad Autónoma de Madrid
instname_str Universidad Autónoma de Madrid
reponame_str Biblos-e Archivo. Repositorio Institucional de la UAM
collection Biblos-e Archivo. Repositorio Institucional de la UAM
repository.name.fl_str_mv
repository.mail.fl_str_mv
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