Valleytronics and negative differential resistance in cubic boron nitride: a first-principles study

Posted by dbos Caltech

Kavli Affiliate: Austin J. Minnich | First 5 Authors: Benjamin Hatanpää, Austin J. Minnich, , , | Summary: Cubic boron nitride (c-BN) is an ultrawide-bandgap semiconductor of significant interest for high-frequency and high-power electronics applications owing to its high saturation drift velocity and high electric breakdown field. Beyond transistors, devices exploiting the valley degree of […]


Continue.. Valleytronics and negative differential resistance in cubic boron nitride: a first-principles study

Phononic materials with effectively scale-separated hierarchical features using interpretable machine learning

Posted by dbos Caltech

Kavli Affiliate: Chiara Daraio | First 5 Authors: Mary V. Bastawrous, Zhi Chen, Alexander C. Ogren, Chiara Daraio, Cynthia Rudin | Summary: Manipulating the dispersive characteristics of vibrational waves is beneficial for many applications, e.g., high-precision instruments. architected hierarchical phononic materials have sparked promise tunability of elastodynamic waves and vibrations over multiple frequency ranges. In […]


Continue.. Phononic materials with effectively scale-separated hierarchical features using interpretable machine learning

Dynamics of the unitary Bose gas near a narrow Feshbach resonance: universal coherent atom-molecule oscillations

Posted by dbos Peking

Kavli Affiliate: Ke Wang | First 5 Authors: Ke Wang, Zhendong Zhang, Shu Nagata, Zhiqiang Wang, K. Levin | Summary: Quench experiments on a unitary Bose gas around a broad Feshbach resonance have led to the discovery of universal dynamics. This universality is manifested in the measured atomic momentum distributions where, asymptotically, a quasi-equilibrated metastable […]


Continue.. Dynamics of the unitary Bose gas near a narrow Feshbach resonance: universal coherent atom-molecule oscillations

FancyVideo: Towards Dynamic and Consistent Video Generation via Cross-frame Textual Guidance

Posted by dbos Peking

Kavli Affiliate: Jing Wang | First 5 Authors: Jiasong Feng, Ao Ma, Jing Wang, Bo Cheng, Xiaodan Liang | Summary: Synthesizing motion-rich and temporally consistent videos remains a challenge in artificial intelligence, especially when dealing with extended durations. Existing text-to-video (T2V) models commonly employ spatial cross-attention for text control, equivalently guiding different frame generations without […]


Continue.. FancyVideo: Towards Dynamic and Consistent Video Generation via Cross-frame Textual Guidance

Systematic effects on lensing reconstruction from a patchwork of CMB polarization maps

Posted by dbos Tokyo

Kavli Affiliate: Toshiya Namikawa | First 5 Authors: Ryo Nagata, Toshiya Namikawa, , , | Summary: We investigate the tolerance for systematic errors in lensing analysis applied to a patchwork map of Cosmic Microwave Background polarization. We focus on the properties of the individual polarization maps that comprise the patchwork and discuss the associated calibration […]


Continue.. Systematic effects on lensing reconstruction from a patchwork of CMB polarization maps

The free boundary for the singular obstacle problem with logarithmic forcing term

Posted by dbos UCAS

Kavli Affiliate: Yi Zhou | First 5 Authors: Lili Du, Yi Zhou, , , | Summary: In the previous work [Interfaces Free Bound., 19, 351-369, 2017], de Queiroz and Shahgholian investigated the regularity of the solution to the obstacle problem with singular logarithmic forcing term begin{equation*} -Delta u = log u , chi_{{u>0}} quad text{in} […]


Continue.. The free boundary for the singular obstacle problem with logarithmic forcing term

Constraining Ultralight ALP Dark Matter in Light of Cosmic Birefringence

Posted by dbos Tokyo

Kavli Affiliate: Toshiya Namikawa | First 5 Authors: Dongdong Zhang, Elisa G. M. Ferreira, Ippei Obata, Toshiya Namikawa, | Summary: Cosmic birefringence, the observed rotation of the polarization plane of the cosmic microwave background (CMB), serves as a compelling probe for parity-violating physics beyond the Standard Model. This study explores the potential of ultralight axion-like […]


Continue.. Constraining Ultralight ALP Dark Matter in Light of Cosmic Birefringence

Unveiling the Cosmic Chemistry: Revisiting the Mass-Metallicity Relation with JWST/NIRSpec at 4 < z < 10

Posted by dbos MIT

Kavli Affiliate: Michael McDonald | First 5 Authors: Arnab Sarkar, Priyanka Chakraborty, Mark Vogelsberger, Michael McDonald, Paul Torrey | Summary: We present star formation rates (SFR), the mass-metallicity relation (MZR), and the SFR-dependent MZR across redshifts 4 to 10 using 81 star-forming galaxies observed by the JWST NIRSpec employing both low-resolution PRISM and medium-resolution gratings, […]


Continue.. Unveiling the Cosmic Chemistry: Revisiting the Mass-Metallicity Relation with JWST/NIRSpec at 4 < z < 10

Unveiling the Cosmic Chemistry: Revisiting the Mass-Metallicity Relation with JWST/NIRSpec at 4 < z < 10

Posted by dbos MIT

Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Arnab Sarkar, Priyanka Chakraborty, Mark Vogelsberger, Micheal McDoland, Paul Torrey | Summary: We present star formation rates (SFR), the mass-metallicity relation (MZR), and the SFR-dependent MZR across redshifts 4 to 10 using 81 star-forming galaxies observed by the JWST NIRSpec employing both low-resolution PRISM and medium-resolution gratings, […]


Continue.. Unveiling the Cosmic Chemistry: Revisiting the Mass-Metallicity Relation with JWST/NIRSpec at 4 < z < 10

Joint Optimization of Buffer Delay and HARQ for Video Communications

Posted by dbos UCAS

Kavli Affiliate: Cheng Peng | First 5 Authors: Baoping Cheng, Peng Lei, Xiaoyan Xie, Tao Fu, Yukun Zhang | Summary: To improve the quality of experience (QoE) in video communication over lossy networks, this paper presents a transmission method that jointly optimizes buffer delay and Hybrid Automatic Repeat request (HARQ), referred to as BD-HARQ. This […]


Continue.. Joint Optimization of Buffer Delay and HARQ for Video Communications