Estimating Non-Gaussianity of a Quantum State by Measuring Orthogonal Quadratures [PDF]
Entropy, 2022 We derive the lower bounds for a non-Gaussianity measure based on quantum relative entropy (QRE). Our approach draws on the observation that the QRE-based non-Gaussianity measure of a single-mode quantum state is lower bounded by a function of the ...
Jiyong Park
exaly +4 more sources
Non-Gaussianity from inflation: theory and observations [PDF]
Physics Reports, 2004 This is a review of models of inflation and of their predictions for the primordial non-Gaussianity in the density perturbations which are thought to be at the origin of structures in the Universe.
Eiichiro Komatsu +2 more
exaly +3 more sources
Evaluation of Changes in Heart Rate Variability Associated with Puppy Growth Using Phase-Rectified Signal Averaging (PRSA) and Non-Gaussianity Index [PDF]
AnimalsHeart rate variability (HRV) reflects autonomic nervous system (ANS) activity through nonlinear mechanisms, including complex beat-to-beat fluctuations and chaos-like dynamics of healthy cardiac rhythms.
Rio Hayashi +8 more
doaj +2 more sources
Non-Gaussianity as a Signature of a Quantum Theory of Gravity [PDF]
PRX Quantum, 2021 Tabletop tests of quantum gravity (QG) have long been thought to be practically impossible. However, remarkably, because of rapid progress in quantum information science (QIS), such tests may soon be achievable.
Richard Howl +5 more
doaj +2 more sources
Exploring Non-Gaussianity Reduction in Quantum Channels [PDF]
EntropyThe quantum relative entropy between a quantum state and its Gaussian equivalent is a quantifying function of the system’s non-Gaussianity, a useful resource in several applications, such as quantum communication and computation.
Micael Andrade Dias +1 more
doaj +2 more sources
Selective engagement of long-latency reflexes in postural control through wobble board training [PDF]
Scientific ReportsLong-latency reflexes (LLRs) are critical precursors to intricate postural coordination of muscular adaptations that sustain equilibrium following abrupt disturbances.
Theodore Deligiannis +5 more
doaj +2 more sources
Implications for the non-Gaussianity of curvature perturbation from pulsar timing arrays [PDF]
Physical Review D, 2023 The recently released data by pulsar timing array (PTA) collaborations present strong evidence for a stochastic signal consistent with a gravitational-wave background.
Lang Liu, Zu-Cheng Chen, Qing-Guo Huang
semanticscholar +1 more source
Primordial non-Gaussianity f NL and anisotropies in scalar-induced gravitational waves [PDF]
Journal of Cosmology and Astroparticle Physics, 2023 Primordial non-Gaussianity encodes vital information of the physics of the early universe, particularly during the inflationary epoch. To explore the local-type primordial non-Gaussianity f NL, we study the anisotropies in gravitational wave background ...
Jun-Peng Li +3 more
semanticscholar +1 more source
Non-Gaussianity and the induced gravitational wave background [PDF]
Journal of Cosmology and Astroparticle Physics, 2021 Scalar metric fluctuations generically source a spectrum of gravitational waves at second order in perturbation theory, poising gravitational wave experiments as potentially powerful probes of the small-scale curvature power spectrum.
Peter Adshead, K. Lozanov, Z. Weiner
semanticscholar +1 more source
Non-perturbative non-Gaussianity and primordial black holes [PDF]
Europhysics letters, 2022 We present a non-perturbative method for calculating the abundance of primordial black holes given an arbitrary one-point probability distribution function for the primordial curvature perturbation, .
Andrew D. Gow +5 more
semanticscholar +1 more source