March 2021 – Page 2 – Kavli Institute Pre-Print Publications

Inferring simple but precise quantitative models of human oocyte and early embryo development

Posted by dbos March 22, 2021Harvard

Kavli Affiliate: Daniel Needleman | First 5 Authors: Brian D Leahy, Catherine Racowsky, Daniel Needleman, , | Summary: Macroscopic, phenomenological models have proven useful as concise framings of our understandings in fields from statistical physics to economics to biology. Constructing a phenomenological model for development would provide a framework for understanding the complicated, regulatory nature […]

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Loss Mechanism Analyses of Perovskite Solar Cells with an Equivalent Circuit Model

Posted by klaurent March 20, 2021Berkeley

Kavli Affiliate: Ting Xu | First 5 Authors: Ting Xu, Zi-Shuai Wang, Xuan-Hua Li, Wei E. I. Sha, | Summary: Understanding and quantifying the main loss factors affecting the power conversion efficiency of perovskite solar cells are urgently needed. In this work, based on semiconductor physics, the expressions of bulk and surface recombination currents are […]

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Dynamical Modeling of the CIV Broad Line Region of the $z=2.805$ Multiply Imaged Quasar SDSS J2222+2745

Posted by March 19, 2021Chicago

Kavli Affiliate: Michael Gladders | First 5 Authors: Peter R. Williams, Tommaso Treu, Håkon Dahle, Stefano Valenti, Louis Abramson | Summary: We present CIV BLR modeling results for the multiply imaged $z=2.805$ quasar SDSS J2222+2745. Using data covering a 5.3 year baseline after accounting for gravitational time delays, we find models that can reproduce the […]

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The Gravitino Swampland Conjecture

Posted by klaurent March 18, 2021Chicago

Kavli Affiliate: Edward W. Kolb | First 5 Authors: Edward W. Kolb, Andrew J. Long, Evan McDonough, , | Summary: We extend the swampland from effective field theories (EFTs) inconsistent with quantum gravity to EFTs inconsistent with quantum supergravity. This enlarges the swampland to include EFTs that become inconsistent when the gravitino is quantized. We […]

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A new parameter free partially penalized immersed finite element and the optimal convergence analysis

Posted by klaurent March 18, 2021Berkeley

Kavli Affiliate: Feng Wang | First 5 Authors: Haifeng Ji, Feng Wang, Jinru Chen, Zhilin Li, | Summary: This paper presents a new parameter free partially penalized immersed finite element method and convergence analysis for solving second order elliptic interface problems. A lifting operator is introduced on interface edges to ensure the coercivity of the […]

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Methods of Error Estimation for Delay Power Spectra in $21,textrm{cm}$ Cosmology

Posted by klaurent March 17, 2021MIT

Kavli Affiliate: Jacqueline N. Hewitt | First 5 Authors: Jianrong Tan, Adrian Liu, Nicholas S. Kern, Zara Abdurashidova, James E. Aguirre | Summary: Precise measurements of the 21 cm power spectrum are crucial for understanding the physical processes of hydrogen reionization. Currently, this probe is being pursued by low-frequency radio interferometer arrays. As these experiments […]

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Measurement of the Beam-Normal Single-Spin Asymmetry for Elastic Electron Scattering from $^12$C and $^27$Al

Posted by klaurent March 17, 2021Cambridge

Kavli Affiliate: A. C. Davis | Summary:We report measurements of the parity-conserving beam-normal single-spin elastic scattering asymmetries $B_n$ on $^12$C and $^27$Al, obtained with an electron beam polarized transverse to its momentum direction. These measurements add an additional kinematic point to a series of previous measurements of $B_n$ on $^12$C and provide a first measurement […]

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Micromirror total internal reflection microscopy for high-performance single particle tracking at interfaces

Posted by klaurent March 17, 2021Oxford

Kavli Affiliate: Philipp Kukura | Summary:Single particle tracking has found broad applications in the life and physical sciences, enabling the observation and characterisation of nano- and microscopic motion. Fluorescence-based approaches are ideally suited for high-background environments, such as tracking lipids or proteins in or on cells, due to superior background rejection. Scattering-based detection is preferable […]

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Should the Endless Frontier of Federal Science be Expanded?

Posted by klaurent March 17, 2021Caltech

Kavli Affiliate: Thomas Rosenbaum | Summary:Scientific research in the United States could receive a large increase in federal funding–up to 100 billion dollars over five years — if proposed legislation entitled the Endless Frontiers Act becomes law. This bipartisan and bicameral bill, introduced in May 2020 by Senators Chuck Schumer (D-NY) and Todd Young (R-IN) […]

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Should the Endless Frontier of Federal Science be Expanded?

Posted by klaurent March 17, 2021Caltech

Kavli Affiliate: Thomas Rosenbaum | First 5 Authors: David Baltimore, Robert Conn, William H Press, Thomas Rosenbaum, David N Spergel | Summary: Scientific research in the United States could receive a large increase in federal funding–up to 100 billion dollars over five years — if proposed legislation entitled the Endless Frontiers Act becomes law. This […]

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