The Ladder Operators on 1 + 1-de Sitter Space

International Journal of Theoretical Physics - In this paper, we present the annihilation and creation operators for a moving scalar massive particle on 1 + 1-de Sitter space. This presentation is...     

Quantum physics of an elementary system in de Sitter space

We present the coherent states of a scalar massive particle on 1+3-de Sitter space. These states are vectors in Hilbert space, and they are labeled by points in the associated phase space. To do this, we use the fact that the phase space of a scalar massive particle on 1+3-de Sitter space is a cotangent bundle “T ^?(S ³)” which is isomorphic with the complex sphere “ $S_{\mathbb{C}}^{3}We present the performances of a 330?g zinc molybdate (ZnMoO₄) crystal working as scintillating bolometer as a possible candidate for a next generation experiment to search for neutrinoless double beta decay of ¹⁰⁰Mo. The energy resolution, evaluated at the 2615?keV ??-line of ²⁰⁸Tl, is 6.3?keV FWHM. The internal radioactive contaminations of the ZnMoO₄ were evaluated as <6???Bq/kg (²²⁸Th) and 27±6???Bq/kg (²²⁶Ra). We also present the results of the ?? vs ??/?? discrimination, obtained through the scintillation light as well as through the study of the shape of the thermal signal alone.