Stellar Obliquities of Young Systems, Atmospheres Undergoing Contraction and Escape (SOYSAUCE) II: a 135 Myr planet on an aligned orbit with transit timing variations

Posted by klaurent MIT

Kavli Affiliate: Andrew Vanderburg | Summary:Young planets (<1 Gyr) provide opportunities to directly probe planet formation and evolution processes in action. However, due to heightened stellar activity, there is a lack of known transiting planets in adolescence (~100-500 Myr). Here we present the validation of TIC 150070085 b, a 3.6 R_E planet on a 10.47 […]


Continue.. Stellar Obliquities of Young Systems, Atmospheres Undergoing Contraction and Escape (SOYSAUCE) II: a 135 Myr planet on an aligned orbit with transit timing variations

Universal Suppression of Gravitational Waves from Black Hole Evaporation Dynamics

Posted by klaurent Tokyo

Kavli Affiliate: Misao Sasaki | Summary:Evaporating black holes can leave distinct imprints on gravitational wave (GW) backgrounds. We show that black hole populations with finite width mass distributions exhibit a universal late time evolution governed by the evaporation dynamics rather than the details of the initial mass distribution, leading to a characteristic power law suppression […]


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Crystallography of periodic nanotextures in a strained Mott insulator

Posted by klaurent Cornell

Kavli Affiliate: David Muller | Summary:Here we investigate stripes of alternating structural phases spontaneously forming in epitaxially strained $Ca_2RuO_4$ thin films below the metal-insulator transition. Using large-volume X-ray reciprocal-space mapping, we show that satellite-pattern intensities across 24 symmetry-inequivalent Bragg reflections collapse onto a single parameter-free curve. The collapse identifies a coherent martensitic laminate of few-nm-wide […]


Continue.. Crystallography of periodic nanotextures in a strained Mott insulator

Phase-only control of GRAPE shaped pulses

Posted by klaurent Oxford

Kavli Affiliate: Andrew Baldwin | Summary: We compare phase-only control with phase-and-amplitude control when designing shaped pulses using the GRAPE algorithm, and explain why phase-only control has significant advantages. Trotterisation can be used to simulate amplitude modulation with phase modulation, indicating that the two approaches are fundamentally equivalent. Pulses designed by either method can be […]


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Phase-only control of GRAPE shaped pulses

Posted by klaurent Oxford

Kavli Affiliate: Andrew Baldwin | Summary: We compare phase-only control with phase-and-amplitude control when designing shaped pulses using the GRAPE algorithm, and explain why phase-only control has significant advantages. Trotterisation can be used to simulate amplitude modulation with phase modulation, indicating that the two approaches are fundamentally equivalent. Pulses designed by either method can be […]


Continue.. Phase-only control of GRAPE shaped pulses

Elliptic orbifold lines and integrable hierarchies

Posted by klaurent Tokyo

Kavli Affiliate: Todor Milanov | Summary:We prove that the Gromov–Witten invariants of the elliptic orbifold lines $mathbfP^1_3,3,3$, $mathbfP^1_2,4,4$, and $mathbfP^1_2,3,6$ satisfy a certain system of Hirota Quadratic (or Bilinear) Equations. Our result is the analogue of the so-called Toda conjecture in the Gromov-Witten theory of $mathbfP^1$ or more precisely its non-extended version. A new feature […]


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Connectivity Logic of Dendritic Spines in Cortex: Increased Inputs and Ensemble Formation

Posted by dbos Columbia

Kavli Affiliate: Rafael Yuste | Authors: Dean Geckt, Netanel Ofer, Michael W. Reimann, Rafael Yuste and Idan Segev | Summary: Dendritic spines, small protrusions covering the dendrites of most neurons, are fundamental elements of synaptic connectivity, yet their network-level organization remains poorly understood. Here we leverage the large-scale MICrONS volumetric electron microscopy dataset of mouse […]


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Protein Dynamics Beyond Structure Prediction

Posted by klaurent Berkeley

Kavli Affiliate: Carlos Bustamante | Summary:The ability to predict protein three-dimensional structures from amino acid sequences is a landmark achievement in molecular biology, where recent deep learning approaches such as AlphaFold are the culmination of decades of work. Yet, the quantitative understanding of how protein sequences give rise to dynamic conformational changes and higher-order assemblies […]


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Sycophancy Towards Researchers Drives Performative Misalignment

Posted by klaurent MIT

Kavli Affiliate: Max Tegmark | Summary:The increasing situational awareness of language models raises safety concerns: models might be aware when they are evaluated, and adjust their behavior to evade monitoring and resist modification, e.g., pretending to be aligned only in evaluation. This alignment faking behavior is often interpreted as scheming: an intentional effort of strategic […]


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Perturbation of genes linked to common schizophrenia risk variants identifies cilia programs

Posted by dbos Hopkins

Kavli Affiliate: Keri Martinowich | Authors: Jiseok Lee, Hyunggyu Min, Cristine Casingal, Austin T Ledford, Hannah Lee, Won Ma, Yangzhenyu Gao, Hanqian Mao, Eric S McCoy, Lei Xing, Cindy Fang, Sang Ho Kwon, Mark J Zylka, Keri Martinowich, Kristen R Maynard, Stephanie C Hicks, E S Anton and Hyejung Won | Summary: Schizophrenia (SCZ) is […]


Continue.. Perturbation of genes linked to common schizophrenia risk variants identifies cilia programs