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Creators/Authors contains: "Ramirez, Alexander"

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  1. ; ; ; ; ; ; ; ; (, Sissa Medialab)
    A large mystery that is currently being investigated by the High Energy Physics (HEP) field is the origin and the nature of the Ultra-high energy Cosmic Rays (UHECR). Coming from deep within the Universe, they bring information from afar as well as on possible new physics. This talk reports on the development and design of DUCK (Detector system of Unusual Cosmic-ray casKades), a new cosmic-rays detector at the Clayton State University campus with ns-level detection resolution. The main scientific importance for the DUCK project will be to contribute to the general EAS event analysis methodology novel approach using the full waveform and detector response width, and to an independent verification of the detection of the ‘unusual’cosmic ray events by the Horizon-T detector system that may be indicating direction towards the novel physics possibilities. 
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    Free, publicly-accessible full text available December 23, 2025
  2. ; ; ; ; ; ; ; ; ; ; et al (, Physical Review X)
    The gravity from the quantum entanglement of space-time (GQuEST) experiment uses tabletop-scale Michelson laser interferometers to probe for fluctuations in space-time. We present a practicable interferometer design featuring a novel photon-counting readout method that provides unprecedented sensitivity, as it is not subject to the interferometric standard quantum limit. We evaluate the potential of this design to measure space-time fluctuations motivated by recent “geontropic” quantum gravity models. The accelerated accrual of Fisher information offered by the photon-counting readout enables GQuEST to detect the predicted quantum gravity phenomena within measurement times at least 100 times shorter than equivalent conventional interferometers. The GQuEST design, thus, enables a fast and sensitive search for signatures of quantum gravity in a laboratory-scale experiment. Published by the American Physical Society2025 
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    Free, publicly-accessible full text available February 1, 2026