English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

The talk is devoted to the "extended phase space" approach to QuantumGeometrodynamics. The premises that have led to the formulation of thisapproach are briefly reviewed, namely, non-trivial topology of the Universewhich implies the absence of asymptotic states, in contrast to situations oneusually deals in ordinary quantum field theory; parametrization noninvariancein the Wheeler - DeWitt theory; the problem of time and the absence ofdynamical evolution. Then we discuss the main features of the approach:Hamiltonian dynamics in extended phase space, gauge-dependent Schrodingerequation for the wave function of the Universe, the description of quantumUniverse from the viewpoint of observers in a wide enough class of referenceframes. After all, we analyse problems arising in this approach: the structureof Hilbert space in Quantum Geometrodynamics, the relations between solutionsfor the wave function of the Universe corresponding to various referenceframes, properties of a medium to be necessary to fix a reference frame, thetransition to classical limit.

The "extended phase space" approach to quantum geometrodynamics: what can it give for the development of quantum gravity?