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Year 2025
  • Acceleration deforms exponential decays into generalized Zipf-Mandelbrot laws
    Publication

    An exponentially decaying system looks as if its decay was a generalized power or double-exponential law, provided one takes into account the relativistic time dilation in a detector, the delay of the emitted signal, and the accelerations of both the source and the detector. The same mathematical formula can be found in generalizations of the Zipf-Mandelbrot law in quantitative linguistics and in the dynamics of ligand binding...

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  • Effects of pyrocatechol on the computational, structural, spectroscopic and thermal properties of silver-modified hydroxyapatite
    Publication
    • S. Keser
    • A. Yıldız
    • A. A. Barzinjy
    • R. O. Kareem
    • B. K. Mahmood
    • R. S. Agid
    • T. Ates
    • M. M. Temüz
    • S. Koytepe
    • T. İnce... and 4 others

    - Journal of the Australian Ceramic Society - Year 2025

    This study investigates the synthesis and characterization of hydroxyapatite (HAp) ceramic biomaterials doped with silver (Ag) and pyrocatechol. HAp, commonly utilized in the treatment of hard tissues including teeth and bones, was produced and analyzed to assess the structural, morphological, elemental, and thermal properties of the materials. The phase and crystal structures of the synthesized HAp biomaterials were examined using...

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  • Matrix elements for spin-orbit couplings in KRb

    In response to the need to investigate and create a reliable dataset of spin-orbit coupling matrix elements, we have extended our recent work in which we presented results for the potential energy curves and permanent and transition dipole moments in KRb. This paper presents 190 allowed spin-orbit couplings between 30 singlet and triplet +, , and electronic states of the KRb molecule. These results are crucial for accurately interpreting...

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  • Mixed, quantum-classical description of electron density transfer in the collision process
    Publication

    - MOLECULAR PHYSICS - Year 2025

    In this work, we investigate an ion-atom model describing the time-dependent evolution of electron density during the collision. For a S3+- H system, numerical simulations are based on classical trajectory calculations, and the electron density behaviour is described with the time-dependent Schrödinger equation. We apply the finite difference method to obtain quantitative insights into the charge transfer dynamics, providing detailed...

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  • Self-testing tilted strategies for maximal loophole-free nonlocality
    Publication
    • A. Chaturvedi
    • N. Gigena
    • E. Panwar
    • G. Scala
    • M. Araújo
    • M. Farkas

    - npj Quantum Information - Year 2025

    The degree of experimentally attainable nonlocality, as gauged by the loophole-free or effective violation of Bell inequalities, remains severely limited due to inefficient detectors. We address an experimentally motivated question: Which quantum strategies attain the maximal loophole-free nonlocality in the presence of inefficient detectors? For any Bell inequality and any specification of detection efficiencies, the optimal strategies...

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  • Three-Space as a Quantum Hyperlayer in 1+3 Dimensions: A Case Study in Quantum Space and Time
    Publication

    - ENTROPY - Year 2025

    We discuss a formalism where a universe is identified with the support of a wave function propagating through space–time. The dynamics are of a squeezing type, with shrinking in time and expanding in space. As opposed to classical cosmology, the resulting universe is not a spacelike section of some space–time but a hyperlayer of a finite timelike width, a set which is not a three-dimensional submanifold of space–time. The universe...

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