A formalism based on moments for classical and quantum cosmology

Spanish Relativity Meeting: almost 100 years after Einstein's revolution

Brizuela, David^1

Fisika Teorikoa Eta Zientziaren Historia Saila, UPV/EHU, 644 P.K., Bilbao

48080, Spain^1

关键词: Cosmological modeling;    Homogeneous and isotropic;    Massless scalar fields;    Positive cosmological constant;    Quantum cosmology;    Quantum description;    Quantum evolution;    Statistical moments;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/600/1/012017/pdf
DOI  :  10.1088/1742-6596/600/1/012017

来源: IOP

【 摘 要 】

We compare the classical and quantum description of systems with one degree of freedom with an effective formalism based on statistical moments. Within this formalism the similarities and differences between the classical and quantum evolution of an initial probability distribution are made apparent. We revisit the application of this formalism to a simple cosmological model: the homogeneous and isotropic universe with a massless scalar field as matter content and with positive cosmological constant.