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Phenomenological studies of dimensional deconstruction
KTH, School of Engineering Sciences (SCI), Physics. (Teoretisk partikelfysik)
2005 (English)Licentiate thesis, comprehensive summary (Other scientific)
Abstract [en]

In this thesis, two applications of dimensional deconstruction are studied. The first application is a model for neutrino oscillations in the presence of a large decon- structed extra dimension. In the second application, Kaluza{Klein dark matter from a latticized universal extra dimension is studied. The goal of these projects have been twofold. First, to see whether it is possible to reproduce the relevant features of the higher-dimensional continuum theory, and second, to examine the effect of the latticization in experiments. In addition, an introduction to the the- ory of dimensional deconstruction as well as to the theory of continuous extra dimensions is given. Furthermore, the various higher-dimensional models, such as Arkani-Hamed{Dvali{Dimopolous (ADD) models and models with universal extra dimensions, that have been intensively studied in recent years, are discussed.

Place, publisher, year, edition, pages
Stockholm: KTH , 2005. , vii, 58 p.
Series
Trita-FYS, ISSN 0280-316X ; 2005:69
Keyword [en]
Dimensional deconstruction, higher-dimensional gauge theories, neu- trino mixing, neutrino oscillations, universal extra dimensions, ADD models, Ka- luza{Klein dark matter
National Category
Other Physics Topics
Identifiers
URN: urn:nbn:se:kth:diva-567ISBN: 91-7178-218-4 (print)OAI: oai:DiVA.org:kth-567DiVA: diva2:14451
Presentation
2005-12-09, 112:028, AlbaNova, hus 11, Roslagstullsbacken 11, Stockholm, 10:00
Opponent
Supervisors
Note
QC 20101202Available from: 2005-12-28 Created: 2005-12-28 Last updated: 2011-12-09Bibliographically approved
List of papers
1. Neutrino oscillations in deconstructed dimensions
Open this publication in new window or tab >>Neutrino oscillations in deconstructed dimensions
2005 (English)In: Journal of High Energy Physics (JHEP), ISSN 1126-6708, E-ISSN 1029-8479, Vol. 2005, no 02, 049- p.Article in journal (Refereed) Published
Abstract [en]

We present a model for neutrino oscillations in the presence of a deconstructed non-gravitational large extra dimension compactified on the boundary of a two-dimensional disk. In the deconstructed phase, sub-mm lattice spacings are generated from the hierarchy of energy scales between similar to 1 TeV and the usual B - L breaking scale similar to 10(15) GeV. Here, short-distance cutoffs down to similar to 1eV are motivated by the strong coupling behavior of gravity in local discrete extra dimensions. This could make it possible to probe the discretization of extra dimensions and non-trivial field configurations in theory spaces which have only a few sites, i.e., for coarse latticizations. Thus, the model has relevance to present and future precision neutrino oscillation experiments.

Place, publisher, year, edition, pages
IOP Publishing, 2005
Keyword
Extra Large Dimensions; Lattice Gauge Field Theories; Lattice Models of Gravity; Neutrino Physics
National Category
Subatomic Physics
Identifiers
urn:nbn:se:kth:diva-7438 (URN)10.1088/1126-6708/2005/02/049 (DOI)000228861300049 ()2-s2.0-22144474780 (Scopus ID)
Funder
Swedish Research Council, 621-2001-1611Swedish Research Council, 621-2002-3577
Note

QC 20100716

Available from: 2011-06-21 Created: 2007-09-03 Last updated: 2017-12-14Bibliographically approved
2. Indirect detection of Kaluza-Klein dark matter from latticized universal dimensions
Open this publication in new window or tab >>Indirect detection of Kaluza-Klein dark matter from latticized universal dimensions
2006 (English)In: Journal of Cosmology and Astroparticle Physics, ISSN 1475-7516, E-ISSN 1475-7516, Vol. 2006, no 06, 014- p.Article in journal (Refereed) Published
Abstract [en]

We consider Kaluza-Klein dark matter from latticized universal dimensions. We investigate two different lattice models, where the models differ in the choice of boundary conditions. The models reproduce relevant features of the continuum model for Kaluza-Klein dark matter. For the model with simple boundary conditions, this is the case even for a model with only a few lattice sites. We study the effects of the latticization on the differential flux of positrons from annihilation of Kaluza-Klein dark matter in the galactic halo. We find that for different choices of the compactification radius, the differential positron flux rapidly converges to the continuum model results as a function of the number of lattice sites. In addition, we consider the prospects for upcoming space-based experiments such as PAMELA and AMS-02 to probe the latticization effect.

Place, publisher, year, edition, pages
IOP Publishing / SISSA, 2006
Keyword
Dark matter; Extra dimensions
National Category
Subatomic Physics
Identifiers
urn:nbn:se:kth:diva-7439 (URN)10.1088/1475-7516/2006/06/014 (DOI)000238978600014 ()2-s2.0-37649029696 (Scopus ID)
Funder
Swedish Research Council, 621-2001-1611Swedish Research Council, 621-2002-3577
Note
QC 20100716Available from: 2011-06-21 Created: 2007-09-03 Last updated: 2017-12-14Bibliographically approved

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Citation style
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