Astrophysics – Page 392 – Kavli Institute Pre-Print Publications

Sampling with replacement vs Poisson sampling: a comparative study in optimal subsampling

Posted by klaurent May 17, 2022May 31, 2022Peking

Kavli Affiliate: Jing Wang | First 5 Authors: Jing Wang, Jiahui Zou, HaiYing Wang, , | Summary: Faced with massive data, subsampling is a commonly used technique to improve computational efficiency, and using nonuniform subsampling probabilities is an effective approach to improve estimation efficiency. For computational efficiency, subsampling is often implemented with replacement or through […]

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The Physics potential of the CEPC. Prepared for the US Snowmass Community Planning Exercise (Snowmass 2021)

Posted by klaurent May 17, 2022Tokyo

Kavli Affiliate: Jia Liu | First 5 Authors: Huajie Cheng, Wen Han Chiu, Yaquan Fang, Yu Gao, Jiayin Gu | Summary: The Circular Electron Positron Collider (CEPC) is a large-scale collider facility that can serve as a factory of the Higgs, Z, and W bosons and is upgradable to run at the ttbar threshold. This […]

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The Physics potential of the CEPC. Prepared for the US Snowmass Community Planning Exercise (Snowmass 2021)

Posted by dbos May 17, 2022Tokyo

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Avoiding a Cluster Catastrophe: Retention Efficiency and the Binary Black Hole Mass Spectrum

Posted by klaurent May 17, 2022May 31, 2022Chicago

Kavli Affiliate: Daniel E. Holz | First 5 Authors: Michael Zevin, Daniel E. Holz, , , | Summary: The population of binary black hole mergers identified through gravitational waves has uncovered unexpected features in the intrinsic properties of black holes in the Universe. One particularly surprising and exciting result is the possible existence of black […]

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Avoiding a Cluster Catastrophe: Retention Efficiency and the Binary Black Hole Mass Spectrum

Posted by May 17, 2022Chicago

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Distances to Local Group Galaxies via Population II, Stellar Distance Indicators I: The Sculptor Dwarf Spheroidal

Posted by klaurent May 17, 2022May 31, 2022Chicago

Kavli Affiliate: Wendy L. Freedman | First 5 Authors: Quang H. Tran, Taylor J. Hoyt, Wendy L. Freedman, Barry F. Madore, Elias K. Oakes | Summary: We determine the distance to the Sculptor Dwarf Spheroidal via three Population II stellar distance indicators: (a) the Tip of the Red Giant Branch (TRGB), (b) RR Lyrae variables […]

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Resolving information loss paradox with Euclidean path integral

Posted by klaurent May 17, 2022May 31, 2022Tokyo

Kavli Affiliate: Misao Sasaki | First 5 Authors: Pisin Chen, Misao Sasaki, Dong-han Yeom, Junggi Yoon, | Summary: The information loss paradox remains unresolved ever since Hawking’s seminal discovery of black hole evaporation. In this essay, we revisit the entanglement entropy via Euclidean path integral (EPI) and allow for the branching of semi-classical histories during […]

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Linear Sigma Dark Matter

Posted by klaurent May 17, 2022Tokyo

Kavli Affiliate: Hitoshi Murayama | First 5 Authors: Dan Kondo, Robert McGehee, Tom Melia, Hitoshi Murayama, | Summary: We present a model of self-interacting dark matter based on QCD-like theories and inspired by the proximity of $a_0(980pm 20)$ to the $Kbar{K}(990)$ threshold. Dark matter is comprised of dark pions which self-scatter via the $sigma$ resonance […]

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Semi-inclusive Diffractive Deep Inelastic Scattering at Small-$x$

Posted by klaurent May 17, 2022Peking

Kavli Affiliate: Feng Yuan | First 5 Authors: Yoshitaka Hatta, Bo-Wen Xiao, Feng Yuan, , | Summary: Inspired by a recent study of Iancu, Mueller and Triantafyllopoulos [1] and earlier papers by Golec-Biernat and Wusthoff [2,3], we propose semi-inclusive diffractive deep inelastic scattering (SIDDIS) to investigate the gluon tomography in the nucleon and nuclei at […]

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Non-Universal Stellar Initial Mass Functions: Large Uncertainties in Star Formation Rates at $zapprox 2-4$ and Other Astrophysical Probes

Posted by klaurent May 16, 2022May 24, 2022Tokyo

Kavli Affiliate: Shunsaku Horiuchi | First 5 Authors: Joshua J. Ziegler, Thomas D. P. Edwards, Anna M. Suliga, Irene Tamborra, Shunsaku Horiuchi | Summary: We explore the assumption, widely used in many astrophysical calculations, that the stellar initial mass function (IMF) is universal across all galaxies. By considering both a canonical Salpeter-like IMF and a […]

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