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Type Ia supernovae (SNeIa), the thermonuclear explosions of C/O white dwarf stars in binary systems, are phenomena that remain poorly understood. The complexity of their progenitor systems, explosion physics and intrinsic diversity poses…

We study numerically the magnetic susceptibility of the hierarchical model with Ising spins ($\sigma =\pm 1$) above the critical temperature and for two values of the epsilon parameter. The integrations are performed exactly, using…

High Energy Physics - Lattice · Physics 2009-10-22 Y. Meurice , G. Ordaz , V. G. J. Rodgers

By means of first-principles calculations, we studied stable lattice structures and estimated superconducting transition temperature of CaSi$_2$ at high pressure. Our simulation showed stability of the AlB$_2$ structure in a pressure range…

Superconductivity · Physics 2009-11-13 A. Nakanishi , T. Ishikawa , H. Nagara , K. Kusakabe

The spatio-temporal organization of proteins within the cell membrane can affect numerous biological functions, including cell signaling, communication, and transportation. Deviations from normal spatial arrangements have been observed in…

Biomolecules · Quantitative Biology 2023-10-25 Yasaman Moradi , Jerry SH Lee , Andrea M. Armani

By incubating the mixture of three cyanobacterial proteins, KaiA, KaiB, and KaiC, with ATP in vitro, Kondo and his colleagues reconstituted the robust circadian rhythm of the phosphorylation level of KaiC (Science, 308; 414-415 (2005)).…

Molecular Networks · Quantitative Biology 2009-11-13 Kohei Eguchi , Mitsumasa Yoda , Tomoki P. Terada , Masaki Sasai

A comprehensive study of the structural properties of the heavily investigated rare-earth A2Ir2O7 series under extreme conditions is presented. The series is covered by studying iridates with A = Pr, Sm, Dy-Lu. Temperature- and…

Hypothesis: While the mechanical disruption of microscopic structures in complex fluids by large shear flows has been studied extensively, the effects of applied strains on the dielectric properties of macromolecular aggregates has received…

Soft Condensed Matter · Physics 2022-06-27 Chandeshwar Misra , Paramesh Gadige , Ranjini Bandyopadhyay

A relationship between the chemical composition, structure and luminescent properties of light-emitting SiOxNy(Si) composite layers with Si nanocrystals is demonstrated. Photoluminescence (PL) with a maximum of intensity at 500-600 nm is…

We utilized high-resolution resonant angle-resolved photoemission spectroscopy (ARPES) to study the band structure and hybridization effect of the heavy-fermion compound Ce2IrIn8. We observe a nearly flat band at the binding energy of 7 meV…

Strongly Correlated Electrons · Physics 2019-05-21 H. -J. Liu , Y. -J. Xu , Y. -G. Zhong , J. -Y. Guan , L. -Y. Kong , J. -Z. Ma , Y. -B. Huang , Q. -Y. Chen , G. -F. Chen , M. Shi , Y. -F. Yang , H. Ding

We study the dynamics of a two-dimensional ensemble of randomly distributed classical Heisenberg spins with isotropic RKKY and weaker anisotropic dipole-dipole couplings. Such ensembles may give rise to the flux noise observed in SQUIDs…

Mesoscale and Nanoscale Physics · Physics 2015-06-18 Juan Atalaya , John Clarke , Gerd Schön , Alexander Shnirman

The bright regions in the solar chromosphere and temperature minimum have a good spatial correspondence with regions of intense photospheric magnetic field. Their observation started more than a hundred years ago with the invention of the…

Solar and Stellar Astrophysics · Physics 2022-08-10 Ismo Tähtinen , Ilpo Virtanen , Alexei A. Pevtsov , Kalevi Mursula

Inelastic x-ray scattering and Brillouin light scattering measurements of the dynamic structure factor of liquid hydrogen fluoride have been performed in the temperature range$ T=214\div 283 K$. The data, analysed using a viscoelastic model…

Disordered Systems and Neural Networks · Physics 2016-08-31 R. Angelini , P. Giura , D. Fioretto , G. Monaco , G. Ruocco , F. Sette

High-entropy alloys (HEAs) composed of multiple principal elements have been shown to offer improved radiation resistance over their elemental or dilute-solution counterparts. Using NiCoFeCrMn HEA as a model, here we introduce carbon and…

Materials Science · Physics 2023-01-03 Zhengxiong Su , Jun Ding , Miao Song , Li Jiang , Tan Shi , Zhiming Li , Sheng Wang , Fei Gao , Di Yun , Chenyang Lu , En Ma

We present a computational study of the electronic properties of amorphous SiO2. The ionic configurations used are the ones generated by an earlier molecular dynamics simulations in which the system was cooled with different cooling rates…

Disordered Systems and Neural Networks · Physics 2009-10-30 Thorsten Koslowski , Walter Kob , Katharina Vollmayr

Old and novel layered structures are attracting increasing attention for their physical, electronic, and frictional properties. SiS$_2$, isoelectronic to SiO$_2$, CO$_2$ and CS$_2$, is a material whose phases known experimentally up to 6…

Chemical Physics · Physics 2016-09-13 Dušan Plašienka , Roman Martoňák , Erio Tosatti

Using the upGREAT instrument on SOFIA, we have imaged the [C II] 158 {\mu}m fine structure line emission in bright-rimmed pillars located at the southern edge of the IC1848 H II region, and carried out pointed observations of the [O I] 63…

Astrophysics of Galaxies · Physics 2024-11-06 Dariusz C. Lis , Rolf Güsten , Paul F. Goldsmith , Yoko Okada , Youngmin Seo , Helmut Wiesemeyer , Marc Mertens

Photosystem II (PSII) reaction center is a unique protein-chromophore complex that is capable of efficiently separating electronic charges across the membrane after photoexcitation. In the PSII reaction center, the primary energy- and…

Photoionization models of the giant HII region 30 Doradus are built and confronted to available UV, optical, IR (ISO) and radio spectra, under black-body or CoStar SEDs for the primary source and various density distributions for the…

Astrophysics · Physics 2009-11-13 Y. G. Tsamis , D. Pequignot

The discovery of near-room-temperature superconductivity in compressed hydrides has sparked intensive research efforts to identify superconducting hydrides stable at low or even ambient pressures. Herein, we demonstrate a new mechanism for…

Superconductivity · Physics 2025-06-03 Wendi Zhao , Shumin Guo , Tiancheng Ma , Zhengtao Liu , Chengda Li , Defang Duan , Tian Cui

Collision-induced absorption (CIA) from molecular hydrogen is a dominant opacity source in the atmosphere of cool white dwarfs. It results in a significant flux depletion in the near-IR and IR parts of their spectra. Because of the extreme…

Solar and Stellar Astrophysics · Physics 2017-10-18 Simon Blouin , Piotr M. Kowalski , Patrick Dufour