October 2023 – Page 24 – Kavli Institute Pre-Print Publications

Highly efficient visible and near-IR photon pair generation with thin-film lithium niobate

Posted by dbos October 10, 2023October 23, 2023Caltech

Kavli Affiliate: Alireza Marandi | First 5 Authors: Nathan Harper, Emily Hwang, Ryoto Sekine, Luis Ledezma, Christian Perez | Summary: Efficient on-chip entangled photon pair generation at telecom wavelengths is an integral aspect of emerging quantum optical technologies, particularly for quantum communication and computing. However, moving to shorter wavelengths enables the use of more accessible […]

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Neurogenesis-mediated circuit remodeling reduces engram reinstatement and promotes forgetting

Posted by dbos October 10, 2023October 23, 2023UCSF

Kavli Affiliate: Xin Duan | Authors: Axel Guskjolen, Jagroop Dhaliwal, Juan de la Parra, Jonathan R Epp, Sangyoon Ko, Erin Chahley, Mitch de Snoo, Michela Solari, Prabdeep Panesar, Jason Scott Snyder, Xin Duan, Joshua Sanes, Sheena Josselyn and Paul Frankland | Summary: Post-training increases in hippocampal neurogenesis are associated with forgetting of hippocampus-dependent memories in […]

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Developmental origin and local signals cooperate to determine septal astrocyte identity

Posted by dbos October 10, 2023October 23, 2023UCSF

Kavli Affiliate: Arturo Alvarez-Buylla | Authors: Yajun Xie, Christopher M Reid, Alejandro A Granados, Miguel Turrero Garcia, Fiona Dale-Huang, Sarah M Hanson, Walter R Mancia Leon, Jonathan Liu, Manal A Adam, Olivia Mosto, Angela Oliveira Pisco, Arturo Alvarez-Buylla and Corey C Harwell | Summary: Astrocyte specification during development is influenced by both intrinsic and extrinsic […]

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The look of high-velocity red-giant star collisions

Posted by dbos October 10, 2023Peking

Kavli Affiliate: Pau Amaro Seoane | First 5 Authors: Luc Dessart, Taeho Ryu, Pau Amaro Seoane, Andrew M. Taylor, | Summary: High-velocity stellar collisions driven by a supermassive black hole (BH) or BH-driven disruptive collisions, in dense, nuclear clusters can rival the energetics of supergiant star explosions following gravitational collapse of their iron core. Here, […]

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Modulation Instability and Wavenumber Bandgap Breathers in a Time Layered Phononic Lattice

Posted by dbos October 10, 2023October 23, 2023Caltech

Kavli Affiliate: Chiara Daraio | First 5 Authors: Christopher Chong, Brian Kim, Evelyn Wallace, Chiara Daraio, | Summary: We demonstrate the existence of wavenumber bandgap (q-gap) breathers in a time-periodic phononic lattice. These breathers are localized in time and periodic in space, and are the counterparts to the classical breathers found in spatially-periodic systems. We […]

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Modulation Instability and Wavenumber Bandgap Breathers in a Time Layered Phononic Lattice

Posted by dbos October 10, 2023October 23, 2023Caltech

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FRESCO: An extended, massive, rapidly rotating galaxy at z=5.3

Posted by dbos October 10, 2023October 23, 2023Cambridge

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The Geometry of Truth: Emergent Linear Structure in Large Language Model Representations of True/False Datasets

Posted by dbos October 10, 2023MIT

Kavli Affiliate: Max Tegmark | First 5 Authors: Samuel Marks, Max Tegmark, , , | Summary: Large Language Models (LLMs) have impressive capabilities, but are prone to outputting falsehoods. Recent work has developed techniques for inferring whether a LLM is telling the truth by training probes on the LLM’s internal activations. However, this line of […]

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The Geometry of Truth: Emergent Linear Structure in Large Language Model Representations of True/False Datasets

Posted by dbos October 10, 2023October 23, 2023MIT

Kavli Affiliate: Max Tegmark | First 5 Authors: Samuel Marks, Max Tegmark, , , | Summary: Large Language Models (LLMs) have impressive capabilities, but are also prone to outputting falsehoods. Recent work has developed techniques for inferring whether a LLM is telling the truth by training probes on the LLM’s internal activations. However, this line […]

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Discovery of a variable energy-dependent X-ray polarization in the accreting neutron star GX 5-1

Posted by dbos October 10, 2023MIT

Kavli Affiliate: Herman L. Marshall | First 5 Authors: Sergio Fabiani, Fiamma Capitanio, Rosario Iaria, Juri Poutanen, Andrea Gnarini | Summary: We report on the coordinated observations of the neutron star low-mass X-ray binary (NS-LMXB) gx in X-rays (IXPE, NICER, Nustar and INTEGRAL), optical (REM and LCO), near-infrared (REM), mid-infrared (VLT VISIR), and radio (ATCA). […]

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