Kavli Affiliate: Yi Zhou | First 5 Authors: Xinfeng Hu, Xinfeng Hu, , , | Summary: The work by Kenig-Ponce-Vega [15] initiated the use of Bourgain spaces to study the low-regularity well-posedness of semilinear dispersive equations. Since then, the Bourgain space method has become the dominant, and almost the only method to deal with this […]
Kavli Affiliate: Misao Sasaki | First 5 Authors: Anamaria Hell, Anamaria Hell, , , | Summary: We show that a single constrained scalar field with non-minimal coupling to gravity can give rise to an accelerating Universe. First, we consider this model in the absence of external matter. In the original Jordan frame, we show that […]
Kavli Affiliate: Cheng Peng | First 5 Authors: Lang Cheng, Lang Cheng, , , | Summary: We numerically construct a family of stationary, axisymmetric black hole solutions in Einstein-Born-Infeld theory, incorporating both electric charge and rotation. Our results indicate that when nonlinear electromagnetic effects are weak, rotating BI black holes with fixed spin approach the […]
Kavli Affiliate: Gang Su | First 5 Authors: Jin-Wei Dong, Jin-Wei Dong, , , | Summary: Altermagnetism (AM), the recently discovered third class of collinear magnetic order, is characterized by non-relativistic momentum-dependent spin-split electronic structure with compensated zero net magnetization. It can arise from the conventional antiferromagnetism by introducing local anisotropy on the two opposite-spin […]
Kavli Affiliate: Renxin Xu | First 5 Authors: Zhaosheng Li, Zhaosheng Li, , , | Summary: SRGA J144459.2$-$604207 is a newly confirmed accreting millisecond X-ray pulsar and type I X-ray burster. We present the broadband X-ray timing and spectral behaviors of SRGA J144459.2$-$604207 during its 2024 outburst. The data were collected from NICER, Einstein Probe, […]
Kavli Affiliate: Ran Wang | First 5 Authors: Fei Yuhuan, Fei Yuhuan, , , | Summary: Early detection and diagnosis of diabetic retinopathy is one of the current research focuses in ophthalmology. However, due to the subtle features of micro-lesions and their susceptibility to background interference, ex-isting detection methods still face many challenges in terms […]
Kavli Affiliate: Kejia Lee | First 5 Authors: Zhengli Wang, Zhengli Wang, , , | Summary: In this work, we observe the nearby pulsar, PSR B1929$+$10, using the Five-hundred-meter Aperture Spherical radio Telescope (FAST). We find, for the first time, two new emission components with an extremely weak observed flux density of about $10^-4$ of […]
Kavli Affiliate: Rudolf Podgornik | First 5 Authors: Vijay Yadav, Vijay Yadav, , , | Summary: The ability to precisely control surface charge using charged polymers is fundamental to many nanotechnology applications, enabling the design and fabrication of materials with tailored properties and functionalities. Here, we study the effect of charge regulation (CR) on the […]
Kavli Affiliate: Long Zhang | First 5 Authors: Lei Chen, Lei Chen, , , | Summary: A common wisdom about quantum many-body systems is that emergent phases typically fall into either the Landau-Ginzburg paradigm or topological classifications. Experimentally realizing the intertwined emergence of spontaneous symmetry breaking and topological order remains challenging. Here, we present an […]
Kavli Affiliate: Masahiro Kawasaki | First 5 Authors: Hiroto Yanagisawa, Hiroto Yanagisawa, , , | Summary: We present a new constraint on the primordial helium abundance, $Y_mathrmP$, based on Subaru observations. A major source of uncertainty in previous $Y_mathrmP$ determinations is the lack of extremely metal-poor galaxies (EMPGs; $0.01-0.1Z_odot$), which have metallicities a few to […]