| dc.date.accessioned |
2015-10-15T07:37:36Z |
und |
| dc.date.accessioned |
2017-10-24T12:03:56Z |
|
| dc.date.available |
2015-10-15T07:37:36Z |
und |
| dc.date.available |
2017-10-24T12:03:56Z |
|
| dc.date.issued |
2015-10-15T07:37:36Z |
|
| dc.identifier.uri |
http://radr.hulib.helsinki.fi/handle/10138.1/5088 |
und |
| dc.identifier.uri |
http://hdl.handle.net/10138.1/5088 |
|
| dc.title |
A Model of Composite Dark Matter in Light-Front Holographic QCD |
en |
| ethesis.discipline |
Theoretical Physics |
en |
| ethesis.discipline |
Teoreettinen fysiikka |
fi |
| ethesis.discipline |
Teoretisk fysik |
sv |
| ethesis.discipline.URI |
http://data.hulib.helsinki.fi/id/C29de80f-21cd-424a-b706-b564d642b058 |
|
| ethesis.department.URI |
http://data.hulib.helsinki.fi/id/3acb09b1-e6a2-4faa-b677-1a1b03285b66 |
|
| ethesis.department |
Institutionen för fysik |
sv |
| ethesis.department |
Department of Physics |
en |
| ethesis.department |
Fysiikan laitos |
fi |
| ethesis.faculty |
Matematisk-naturvetenskapliga fakulteten |
sv |
| ethesis.faculty |
Matemaattis-luonnontieteellinen tiedekunta |
fi |
| ethesis.faculty |
Faculty of Science |
en |
| ethesis.faculty.URI |
http://data.hulib.helsinki.fi/id/8d59209f-6614-4edd-9744-1ebdaf1d13ca |
|
| ethesis.university.URI |
http://data.hulib.helsinki.fi/id/50ae46d8-7ba9-4821-877c-c994c78b0d97 |
|
| ethesis.university |
Helsingfors universitet |
sv |
| ethesis.university |
University of Helsinki |
en |
| ethesis.university |
Helsingin yliopisto |
fi |
| dct.creator |
Remes, Jere |
|
| dct.issued |
2015 |
|
| dct.language.ISO639-2 |
eng |
|
| dct.abstract |
Even after 50 years, there is still no standard, analytically tractable way to treat Quantum Chromodynamics (QCD) non-numerically besides perturbation theory. In the high-energy regime perturbation theory agrees with experimental results to a great accuracy. However, at low energies the theory becomes strongly coupled and therefore not computable by perturbative methods. Therefore, non-perturbative methods are needed, and one of the candidates is light-front holography.
In this thesis, the basics of light-front quantisation and holography are discussed. Light-front quantisation takes light-cone coordinates and the Hamiltonian quantisation scheme as its basis and the resulting field theory has many beneficial properties like frame-independence. Still, to extract meaningful results from the light-front QCD, one needs to apply bottom-up holographic methods.
Last part of this work focuses on the applicability of light-front holographic QCD in the area of dark matter. We find that one can build a secluded SU(3) sector consisting of a doublet of elementary particles, analogous to quarks and gluons. Due to a global symmetry, the lightest stable particle is analogous with ordinary neutron. It meets the basic requirements for being a WIMP candidate when its mass is higher than 5 TeV. |
en |
| dct.language |
en |
|
| ethesis.language.URI |
http://data.hulib.helsinki.fi/id/languages/eng |
|
| ethesis.language |
English |
en |
| ethesis.language |
englanti |
fi |
| ethesis.language |
engelska |
sv |
| ethesis.thesistype |
pro gradu-avhandlingar |
sv |
| ethesis.thesistype |
pro gradu -tutkielmat |
fi |
| ethesis.thesistype |
master's thesis |
en |
| ethesis.thesistype.URI |
http://data.hulib.helsinki.fi/id/thesistypes/mastersthesis |
|
| dct.identifier.urn |
URN:NBN:fi-fe2017112251525 |
|
| dc.type.dcmitype |
Text |
|
