Evolution of high-redshift quasar hosts and promotion of massive black hole seed formation

Kavli Affiliate: Kohei Inayoshi | First 5 Authors: Wenxiu Li, Kohei Inayoshi, Yu Qiu, , | Summary: High-redshift luminous quasars powered by accreting supermassive black holes (SMBHs) with mass $gtrsim 10^9 M_odot$ constrain their formation pathways. We investigate the formation of heavy seeds of SMBHs through gas collapse in the quasar host progenitors, using merger […]


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TIC 454140642: A Compact, Coplanar, Quadruple-lined Quadruple Star System Consisting of Two Eclipsing Binaries

Kavli Affiliate: Saul A. Rappaport | First 5 Authors: Veselin B. Kostov, Brian P. Powell, Guillermo Torres, Tamas Borkovits, Saul A. Rappaport | Summary: We report the discovery of a compact, coplanar, quadruply-lined, eclipsing quadruple star system from TESS data, TIC 454140642, also known as TYC 0074-01254-1. The target was first detected in Sector 5 […]


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Beating the Lyth bound by parametric resonance during inflation

Kavli Affiliate: Misao Sasaki | First 5 Authors: Yi-Fu Cai, Jie Jiang, Misao Sasaki, Valeri Vardanyan, Zihan Zhou | Summary: We propose a novel mechanism for enhancing the primordial gravitational waves without significantly affecting the curvature perturbations produced during inflation. This is achieved due to non-linear sourcing of resonantly amplified scalar field fluctuations. Our result […]


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Optical coherent dot-product chip for sophisticated deep learning regression

Kavli Affiliate: Jing Wang | First 5 Authors: Shaofu Xu, Jing Wang, Haowen Shu, Zhike Zhang, Sicheng Yi | Summary: Optical implementations of neural networks (ONNs) herald the next-generation high-speed and energy-efficient deep learning computing by harnessing the technical advantages of large bandwidth and high parallelism of optics. However, due to the problems of incomplete […]


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MP3 White Paper 2021 — Research Opportunities Enabled by Co-locating Multi-Petawatt Lasers with Dense Ultra-Relativistic Electron Beams

Kavli Affiliate: Roger Blandford | First 5 Authors: Sebastian Meuren, David A. Reis, Roger Blandford, Phil H. Bucksbaum, Nathaniel J. Fisch | Summary: Novel emergent phenomena are expected to occur under conditions exceeding the QED critical electric field, where the vacuum becomes unstable to electron-positron pair production. The required intensity to reach this regime, $sim10^{29},mathrm{Wcm^{-2}}$, […]


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All-optical Quantum State Engineering for Rotation-symmetric Bosonic States

Kavli Affiliate: Alireza Marandi | First 5 Authors: Rajveer Nehra, Miller Eaton, Olivier Pfister, Alireza Marandi, | Summary: Continuous-variable quantum information processing through quantum optics offers a promising platform for building the next generation of scalable fault-tolerant information processors. To achieve quantum computational advantages and fault tolerance, non-Gaussian resources are essential. In this work, we […]


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InSbAs two-dimensional electron gases as a platform for topological superconductivity

Kavli Affiliate: Giordano Scappucci | First 5 Authors: Christian M. Moehle, Chung Ting Ke, Qingzhen Wang, Candice Thomas, Di Xiao | Summary: Topological superconductivity can be engineered in semiconductors with strong spin-orbit interaction coupled to a superconductor. Experimental advances in this field have often been triggered by the development of new hybrid material systems. Among […]


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An Efficient Training Approach for Very Large Scale Face Recognition

Kavli Affiliate: Zheng Zhu | First 5 Authors: Kai Wang, Shuo Wang, Panpan Zhang, Zhipeng Zhou, Zheng Zhu | Summary: Face recognition has achieved significant progress in deep learning era due to the ultra-large-scale and welllabeled datasets. However, training on the outsize datasets is time-consuming and takes up a lot of hardware resource. Therefore, designing […]


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An Empirical Background Model for the NICER X-ray Timing Instrument

Kavli Affiliate: Gregory Y. Prigozhin | First 5 Authors: Ronald A. Remillard, Michael Loewenstein, James F. Steiner, Gregory Y. Prigozhin, Beverly LaMarr | Summary: NICER has a comparatively low background rate, but it is highly variable, and its spectrum must be predicted using measurements unaffected by the science target. We describe an empirical, three-parameter model […]


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External Calibrator in Global Signal Experiment for Detection of the Epoch of Reionization

Kavli Affiliate: Kejia Lee | First 5 Authors: Yan Huang, Xiang-Ping Wu, Quan Guo, Qian Zheng, Biying Li | Summary: We present a conceptual design study of external calibrators in the 21 cm experiment towards detecting the globally averaged radiation of the epoch of reionization (EoR). Employment of external calibrator instead of internal calibrator commonly […]


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