3 papers
quant-ph2025
Probing the Universe's Topology through a Quantum System?
Evangelos Achilleas Paraskevas, Leandros Perivolaropoulos
The global topology of the Universe could, in principle, affect quantum systems through boundary condition constraints. We investigate this connection by analyzing how compact, fla…
gr-qc2025
Gravitational Wave Signatures Induced by Dark Fluid Accretion in Binary Systems
Evangelos Achilleas Paraskevas, Leandros Perivolaropoulos
We investigate the impact of dark fluid accretion on gravitational waveforms emitted by a compact binary system consisting of a supermassive black hole and a stellar-mass black hol…
astro-ph.CO2025
Linear matter density perturbations in the CDM model: Examining growth dynamics and addressing the tension
Özgür Akarsu, Arman Çam, Evangelos A. Paraskevas +1
We investigate linear matter density perturbations in the CDM, in which the is replaced by late-time () mirror AdS-dS transition, resulting in distinct growt…