2023 – Page 87 – Kavli Institute Pre-Print Publications

Cellular Calcium Activity at Depth Predicted from Surface Potential Recordings using Ultra-high Density Transparent Graphene Arrays

Posted by klaurent October 8, 2023October 16, 2023UCSD / Salk

Kavli Affiliate: Takaki Komiyama | Authors: Mehrdad Ramezani, Jeong-Hoon Kim, Xin Liu, Chi Ren, Abdullah Alothman, Chawina De- Eknamkul, Madison Wilson, Ertugrul Cubukcu, Vikash Gilja, Takaki Komiyama and Duygu Kuzum | Summary: Recording brain activity with high spatial and high temporal resolution across deeper layers of cortex has been a long-sought methodology to study how […]

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Boson stars in massless and massive scalar-tensor gravity

Posted by dbos October 8, 2023Cambridge

Kavli Affiliate: Ulrich Sperhake | First 5 Authors: Tamara Evstafyeva, Roxana Rosca-Mead, Ulrich Sperhake, Bernd Brugmann, | Summary: We study phenomenological features and stability of boson stars in massless and massive scalar-tensor theory of gravity with Damour-Esposito-Farese coupling. This coupling between the tensor and scalar sectors of the theory leads to a phenomenon called spontaneous […]

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Boson stars in massless and massive scalar-tensor gravity

Posted by dbos October 8, 2023Cambridge

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Distribution-Based Trajectory Clustering

Posted by dbos October 8, 2023Peking

Kavli Affiliate: Jing Wang | First 5 Authors: Zi Jing Wang, Ye Zhu, Kai Ming Ting, , | Summary: Trajectory clustering enables the discovery of common patterns in trajectory data. Current methods of trajectory clustering rely on a distance measure between two points in order to measure the dissimilarity between two trajectories. The distance measures […]

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Terahertz phonon engineering with van der Waals heterostructures

Posted by dbos October 7, 2023Berkeley

Kavli Affiliate: Feng Wang | First 5 Authors: Yoseob Yoon, Zheyu Lu, Can Uzundal, Ruishi Qi, Wenyu Zhao | Summary: Phononic engineering at gigahertz (GHz) frequencies form the foundation of microwave acoustic filters, acousto-optic modulators, and quantum transducers. Terahertz (THz) phononic engineering could lead to acoustic filters and modulators at higher bandwidth and speed, as […]

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Terahertz phonon engineering and spectroscopy with van der Waals heterostructures

Posted by dbos October 7, 2023Berkeley

Kavli Affiliate: Feng Wang | First 5 Authors: Yoseob Yoon, Zheyu Lu, Can Uzundal, Ruishi Qi, Wenyu Zhao | Summary: Phononic engineering at GHz frequencies form the foundation of microwave acoustic filters, high-speed acousto-optic modulators, and quantum transducers. THz phononic engineering could lead to acoustic filters and modulators at higher bandwidth and speed, as well […]

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Entanglement transition in rod packings

Posted by dbos October 7, 2023Harvard

Kavli Affiliate: L. Mahadevan | First 5 Authors: Yeonsu Jung, Thomas Plumb-Reyes, Hao-Yu Greg Lin, L. Mahadevan, | Summary: Random packings of stiff rods are self-supporting mechanical structures stabilized by long range interactions induced by contacts. To understand the geometrical and topological complexity of the packings, we deploy X-ray computerized tomography to unveil the structure […]

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Entanglement transition in rod packings

Posted by dbos October 7, 2023Harvard

Kavli Affiliate: L. Mahadevan | First 5 Authors: Yeonsu Jung, Thomas Plumb-Reyes, Hao-Yu Greg Lin, L. Mahadevan, | Summary: Random packings of stiff rods are self-supporting mechanical structures stabilized by their geometrical and topological complexity. To understand why, we deploy X-ray computerized tomography to unveil the structure of the packing. This allows us to define […]

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How Nested Bars Enhance, Modulate, and are Destroyed by Gas Inflows

Posted by dbos October 7, 2023MIT

Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Zhi Li, Min Du, Victor P. Debattista, Juntai Shen, Hui Li | Summary: Gas flows in the presence of two independently-rotating nested bars remain not fully understood, which is likely to play an important role in fueling the central black hole. We use high-resolution hydrodynamical simulations with […]

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An exact method for bosonizing the Fermi surface in arbitrary dimensions

Posted by dbos October 7, 2023UCSB

Kavli Affiliate: Leon Balents | First 5 Authors: Takamori Park, Leon Balents, , , | Summary: Inspired by the recent work by Delacretaz et. al., we rigorously derive an exact and simple method to bosonize a non-interacting fermionic system with a Fermi surface starting from a microscopic Hamiltonian. In the long-wavelength limit, we show that […]

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