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223 papers · 1 filter
Gravitational wave asteroseismology on cooling neutron stars
Hajime Sotani, Akira Dohi
We examine the gravitational wave frequencies from neutron stars during thermal evolution, adopting the relativistic Cowling approximation. We particularly focus on the neutron sta…
Squeezed quantum states of graviton and axion in the universe
Sugumi Kanno, Jiro Soda
Particle production during cosmic expansion can be interpreted as a two-mode squeezing process of quantum states. The two-mode squeezed states consist of an infinite number of enta…
On the bundle of KMS state spaces for flows on a Z-absorbing C*-algebra
George A. Elliott, Yasuhiko Sato, Klaus Thomsen
We obtain three results: 1) Every compact simplex bundle with exactly one point in the fiber over 0 is the KMS bundle of a periodic flow on the Jiang-Su algebra. 2) Let A be a sepa…
Cooling of Isolated Neutron Stars with Pion Condensation: Possible Fast Cooling in a Low-Symmetry-Energy Model
Akira Dohi, Helei Liu, Tsuneo Noda +1
We studied thermal evolution of isolated neutron stars (NSs) including the pion condensation core, with an emphasis on the stiffness of equation of state (EOS). Many temperature ob…
Slip Length Measurement in Rectangular Graphene Nanochannels with a 3D Flow Analysis
Kuan-Ting Chen, Qin-Yi Li, Takeshi Omori +3
Although many molecular dynamics simulations have been conducted on slip flow on graphene, experimental efforts remain very limited and our understanding of the flow friction on gr…
Inelastic Dark Matter from Dark Higgs Boson Decays at FASER
Jinmian Li, Takaaki Nomura, Takashi Shimomura
We consider inelastic dark matter scenarios with dark photon mediator and a dark Higgs boson. The dark Higgs boson spontaneously breaks the gauge symmetry associated with the dark…
Dragging spin-orbit-coupled solitons by a moving optical lattice
Hidetsugu Sakaguchi, Fumihide Hirano, Boris A. Malomed
It is known that the interplay of the spin-orbit-coupling (SOC) and mean-field self-attraction creates stable two-dimensional (2D) solitons (ground states) in spinor Bose-Einstein…
The integrated copula spectrum
Yuichi Goto, Tobias Kley, Ria Van Hecke +3
Frequency domain methods form a ubiquitous part of the statistical toolbox for time series analysis. In recent years, considerable interest has been given to the development of new…
Comparative studies of hydrogen dissolution and release behavior in zirconate oxides by TDS and TMAP4 analysis
M. Khalid Hossain, Kenichi Hashizume
Proton-conducting oxides are potential materials for electrochemical devices such as fuel cells, hydrogen pumps, hydrogen sensors, and the tritium purification and recovery system…
A comprehensive first principles calculations on (Ba0.82K0.18)(Bi0.53Pb0.47)O3 single-cubic-perovskite superconductor
Mirza H. K. Rubel, Sujon Kumar Mitro, Khandaker Monower Hossain +7
In this present study, the pseudopotential plane-wave (PP-PW) pathway in the scheme of density functional theory (DFT) is utilized to investigate the various physical properties on…
Proximal Gradient Algorithms under Local Lipschitz Gradient Continuity: A Convergence and Robustness Analysis of PANOC
Alberto De Marchi, Andreas Themelis
Composite optimization offers a powerful modeling tool for a variety of applications and is often numerically solved by means of proximal gradient methods. In this paper, we consid…
Large-scale structure with superhorizon isocurvature dark energy
Koki Yamashita, Yue Nan, Yuuki Sugiyama +1
The standard cosmological model assumes a homogeneous and isotropic universe as the background spacetime on large scales called the cosmological principle. However, some observatio…
Modelling and computational improvements to the simulation of single vector-boson plus jet processes for the ATLAS experiment
ATLAS Collaboration
This paper presents updated Monte Carlo configurations used to model the production of single electroweak vector bosons (W, Z/) in association with jets in proton-proton col…
Path-entangling evolution and quantum gravitational interaction
Akira Matsumura
We explore a general feature of the interaction mediated by the gravitational fields of spatially superposed masses. For this purpose, based on quantum information theory, we chara…
Dualities for non-Euclidean smoothness and strong convexity under the light of generalized conjugacy
Emanuel Laude, Andreas Themelis, Panagiotis Patrinos
Relative smoothness and strong convexity have recently gained considerable attention in optimization. These notions are generalizations of the classical Euclidean notions of smooth…
Search for flavour-changing neutral-current interactions of a top quark and a gluon in collisions at TeV with the ATLAS detector
ATLAS Collaboration
A search is presented for the production of a single top quark via left-handed flavour-changing neutral-current (FCNC) interactions of a top quark, a gluon and an up or charm quark…
The tracking detector of the FASER experiment
FASER Collaboration, Henso Abreu, Claire Antel +77
FASER is a new experiment designed to search for new light weakly-interacting long-lived particles (LLPs) and study high-energy neutrino interactions in the very forward region of…
Elemental abundances of nearby M dwarfs based on high-resolution near-infrared spectra obtained by the Subaru/IRD survey: Proof of concept
Hiroyuki Tako Ishikawa, Wako Aoki, Teruyuki Hirano +24
Detailed chemical analyses of M dwarfs are scarce but necessary to constrain the formation environment and internal structure of planets being found around them. We present element…
The Generalized Occupation-Restricted-Multiple-Active-Space Concept in Multiconfigurational Self-Consistent Field Methods
Chen Yang, Yoshihiro Watanabe, Haruyuki Nakano
A novel concept of multiconfigurational self-consistent field method, the generalized occupation-restricted-multiple-active-space (GORMAS) is presented. GORMAS wave functions are d…
Search by a Metamorphic Robotic System in a Finite 3D Cubic Grid
Ryonosuke Yamada, Yukiko Yamauchi
We consider search in a finite 3D cubic grid by a metamorphic robotic system (MRS), that consists of anonymous modules. A module can perform a sliding and rotation while the whole…
Charge-changing cross sections for Ca and effect of charged-particle evaporation induced by neutron removal reaction
M. Tanaka, M. Takechi, A. Homma +65
Charge-changing cross sections for Ca on a carbon target at around 280~MeV/nucleon have been measured. The measured values diffe…
Nanoscale Texture and Microstructure in NdFeAs(O,F)/IBAD-MgO Superconducting Thin Film with Superior Critical Current Properties
Zimeng Guo, Hongye Gao, Keisuke Kondo +5
This paper reports the nanoscale texture and microstructure of a high-performance NdFeAs(O,F) superconducting thin film grown by molecular beam epitaxy on a textured MgO/YO…
Multi-task Learning for Compositional Data via Sparse Network Lasso
Akira Okazaki, Shuichi Kawano
A network lasso enables us to construct a model for each sample, which is known as multi-task learning. Existing methods for multi-task learning cannot be applied to compositional…
Particle Acceleration by Pickup Process Upstream of Relativistic Shocks
Masanori Iwamoto, Takanobu Amano, Yosuke Matsumoto +2
Particle acceleration at magnetized purely perpendicular relativistic shocks in electron-ion plasmas are studied by means of two-dimensional particle-in-cell simulations. Magnetize…