Titlebook: Quantum Gravity, Quantum Cosmology and Lorentzian Geometries; Giampiero Esposito Book 19921st edition Springer-Verlag Berlin Heidelberg 19

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Giampiero Espositomic. It also aimed to address the research questions: (1) What is the status of recruitment and selection practices during COVID-19? (2) How is ICT utilized in the recruitment and selection process? (3) What are industry responses on online recruitment and selection? (4) What are the challenges enco

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rchitecture of global system. While the pandemic grew in consequence, global response towards it was directly proportional to the threat, particularly from the West. Still, the pandemic unveiled the lacunae in public policy and administration, formulation and implementation with regards to issues of

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Canonical Quantum Gravitylass constraints, Dirac brackets, effective Hamiltonian, total Hamiltonian and extended Hamiltonian. On quantization, the operator versions of first-class constraints become supplementary conditions on the wave function, provided these constraints are consistent with one another and with the Schr?di

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Perturbative Quantum Gravityface Σ to a three-metric and a field configuration on a spacelike surface Σ′. The Wick-rotated quantum amplitudes are here studied under the assumption that the analytic continuation to the real Riemannian section of the complexified space-time is possible, but this is not a generic property. Within

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Ghost Fields and Gauge Modes in One-Loop Quantum Cosmologyed phase-space method of Batalin, Fradkin and Vilkovisky to the spin-1 field, which is described by a constrained Hamiltonian system with first-class constraints. The charge . and the gauge-fixed action are derived. The Lorentzian path integral is restricted to the trajectories of the extended phase