Sökning: "axions"
Visar resultat 1 - 5 av 7 avhandlingar innehållade ordet axions.
1. Extragalactic extinction and spectral properties of Type Ia supernovae
Sammanfattning : The use of Type Ia supernovae as standardisable candles for probing cosmological parameters with high precision requires good knowledge about how the supernova light is affected along the line of sight and how the intrinsic brightness varies between objects. The work in this thesis addresses these topics. LÄS MER
2. Astrophysical probes of axionlike particles
Sammanfattning : This thesis is a contribution to the search for new fundamental physics in the form of axionlike particles (ALPs). ALPs are relatively light and feebly interacting particles that are part of many theories extending the Standard Model of particle physics, e.g. LÄS MER
3. CdTe detectors and the Mössbauer effect in ¹²⁵Te : investigations for an axion search
Sammanfattning : The use of CdTe crystals as radiation detectors is hampered by the drift properties of charge carriers in CdTe, that make the response depend on the interaction point in the detector crystal. To remedy these effects a detailed model of the signal formation process in such detectors was developed and fitted to sampled pulse shapes. LÄS MER
4. Quest for quantum signatures in Axion Dark Matter and Gravity
Sammanfattning : This licentiate thesis in theoretical physics focuses on the existence of quantum features in physical systems such as axion dark matter and gravity. Our focus is mostly on effects which appear at low energies, a regime in which our models can be confronted with current experiments or within the foreseeable future. LÄS MER
5. Dark Matter, Ancient Rocks, a Band of Higgs Bosons, and a Big Collider : or, Models of New Physics and Some Ways to Probe Them
Sammanfattning : The past ~ 50 years have seen a remarkable success of particle physics. In the 1970s, the Standard Model was formulated and in 2012 its final ingredient, the Higgs boson, was discovered at the Large Hadron Collider (LHC). The Standard Model describes virtually all particle physics observable in the laboratory. LÄS MER
