77 citations · 199 across the 14 of their papers we have counts for
9 papers · 1 filter
Quantization of the Szekeres spacetime through generalized symmetries
Andronikos Paliathanasis, Adamantia Zampeli, Theodosios Christodoulakis +1
We present the effect of the quantum corrections on the Szekeres spacetime, a system important for the study of the inhomogeneities of the pre-inflationary era of the universe. The…
Quantization of inhomogeneous spacetimes with cosmological constant term
Adamantia Zampeli, Andronikos Paliathanasis
We show that the Szekeres system with cosmological constant admits a sufficient number of conservation laws, which allow to claim the integrability of the system. The main novelty…
Emergence of classicality from an inhomogeneous quantum universe
Adamantia Zampeli
We give a short account of the quantisation of the Szekeres spacetime by considering the symmetries of a reduced action principle. This is an alternative approach than the one foll…
Quantum fate of timelike naked singularity with scalar hair
O. Svitek, T. Tahamtan, A. Zampeli
We study the quantum fate of a naked curvature singularity sourced by a scalar field via several methods and compare the results obtained. The first method relies on relativistic q…
Decoupling of the re-parametrization degree of freedom and a generalized probability in quantum cosmology
N. Dimakis, Petros A. Terzis, Adamantia Zampeli +1
The high degree of symmetry renders the dynamics of cosmological as well as some black hole spacetimes describable by a system of finite degrees of freedom. These systems are gener…
General Analytic Solutions of Scalar Field Cosmology with Arbitrary Potential
N. Dimakis, A. Karagiorgos, Adamantia Zampeli +3
We present the solution space for the case of a minimally coupled scalar field with arbitrary potential in a FLRW metric. This is made possible due to the existence of a nonlocal i…