Models for firewall creation in massless scalar field theory

dc.contributor.authorZhou, Lingjun
dc.contributor.examiningcommitteeShamseddine, Khodr (Physics and Astronomy) Sirker, Jesko (Physics and Astronomy) Schreckenbach, Georg (Department of Chemistry) Page, Don (University of Alberta)en_US
dc.contributor.supervisorKunstatter, Gabor (Physics and Astronomy) Margaret Carrington (Physics and Astronomy)en_US
dc.date.accessioned2019-01-08T16:51:54Z
dc.date.available2019-01-08T16:51:54Z
dc.date.issued2018-12-19en_US
dc.date.submitted2018-12-19T15:33:15Zen
dc.degree.disciplinePhysics and Astronomyen_US
dc.degree.levelDoctor of Philosophy (Ph.D.)en_US
dc.description.abstractWe study the topic of quantum entanglement in the extreme spacetime background of a black hole. It was suggested by Almheiri et al (AMPS) that, unlike what is commonly believed, the event horizon of a black hole past Page time is very disruptive and violent. This disruption at the event horizon manifests itself as the so-called ` rewall', which incinerates any infalling object. As a result, quantum entanglement across the event horizon is also broken, and this saves us from the information loss conundrum. AMPS did not propose a mechanism for such `fi rewall', and many have been speculating how to realize such a singular structure. In this thesis, following Brown and Louko, we study further the mechanism of singular energy density in the context of Minkowski spacetime. We generalize their one-dimensional model to three dimensions. We study two spherically symmetric generalizations of Brown and Louko's model. The rst is the creation of a null energy pulse with a time-dependent boundary condition at the space origin, and the second is the creation of an outgoing and an ingoing energy pulse by a time-dependent boundary condition at a nite radius r = a. Both models generate singular energy pulses which at first sight seems to be strong enough to break quantum correlations. However, a singular energy pulse is not enough evidence to show that quantum correlation is broken1. A divergent response of an Unruh-DeWitt detector is needed. Our calculation shows that the three dimensional spherically symmetric model with a time-dependent boundary condition at the origin can be singular enough to destroy the quantum correlations. A similar calculation shows that the spherically symmetric model with a time-dependent boundary condition at nite radius r = a is not singular enough, because the Unruh-DeWitt detector response does not diverge. Our contributions to this topic consist of two models; 3+1 D pointlike source creation and 3+1 D shell creation. In both cases, we extended Brown and Louko's 1+1 D model and studied properties of the energy density and response function.en_US
dc.description.noteFebruary 2019en_US
dc.identifier.urihttp://hdl.handle.net/1993/33651
dc.language.isoengen_US
dc.rightsopen accessen_US
dc.subjectBlack holeen_US
dc.subjectInformation lossen_US
dc.subjectAMPS proposalen_US
dc.titleModels for firewall creation in massless scalar field theoryen_US
dc.typedoctoral thesisen_US
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