1,019 research outputs found
Comparison of two efficient methods for calculating partition functions
In the long-time pursuit of the solution to calculate the partition function
(or free energy) of condensed matter, Monte-Carlo-based nested sampling should
be the state-of-the-art method, and very recently, we established a direct
integral approach that works at least four orders faster. In present work, the
above two methods were applied to solid argon at temperatures up to K, and
the derived internal energy and pressure were compared with the molecular
dynamics simulation as well as experimental measurements, showing that the
calculation precision of our approach is about 10 times higher than that of the
nested sampling method.Comment: 6 pages, 4 figure
Comparison of two efficient methods for calculating partition functions
In the long-time pursuit of the solution to calculate the partition function
(or free energy) of condensed matter, Monte-Carlo-based nested sampling should
be the state-of-the-art method, and very recently, we established a direct
integral approach that works at least four orders faster. In present work, the
above two methods were applied to solid argon at temperatures up to K, and
the derived internal energy and pressure were compared with the molecular
dynamics simulation as well as experimental measurements, showing that the
calculation precision of our approach is about 10 times higher than that of the
nested sampling method.Comment: 6 pages, 4 figure
Linguistic Expressions on "Tastiness" and Co-occurring Nonverbal Behaviors: Focusing on Expressions seen on a TV program
In this research, we analyzed the relations between linguistic expressions expressing "Tastiness" and co-occurring nonverbal expressions for the TV program. The linguistic expressions expressing "Tastiness" has been revealed in the previous researches. However, in this research, it became clear that "General evaluation expressions" are most used among linguistic expressions. In addition, when "Tastiness" is expressed, it was found that the nonverbal behaviors "Gaze" co-occurs most frequently. Regarding co-occurrence of linguistic expressions expressing "Tastiness" and nonverbal behaviors, it has been revealed that there are some linguistic expressions which tend to co-occur with nonverbal behaviors such as "Exclamation expressions". It was also seen that verbal expressions such as "Taste expressions" and "Olfactory expression" usually co-occur with certain nonverbal behaviors. While "General evaluation expressions" co-occur with various nonverbal behaviors
Anomalous Dome-like Superconductivity in RE2(Cu1-xNix)5As3O2(RE=La, Pr, Nd)
Significant manifestation of interplay of superconductivity and charge
density wave, spin density wave or magnetism is dome-like variation in
superconducting critical temperature (Tc) for cuprate, iron-based and heavy
Fermion superconductors. Overall behavior is that the ordered temperature is
gradually suppressed and the Tc is enhanced under external control parameters.
Many phenomena like pesudogap, quantum critical point and strange metal emerge
in the different doping range. Exploring dome-shaped Tc in new superconductors
is of importance to detect emergent effects. Here, we report that the
observation of superconductivity in new layered Cu-based compound RE2Cu5As3O2
(RE=La, Pr, Nd), in which the Tc exhibits dome-like variation with maximum Tc
of 2.5 K, 1.2 K and 1.0 K as substituting Cu by large amount of Ni ions. The
transitions of T* in former two compounds can be suppressed by either Ni doping
or rare earth replacement. Simultaneously, the structural parameters like As-As
bond length and c/a ratio exhibit unusual variations as Ni-doping level goes
through the optimal value. The robustness of superconductivity, up to 60% of Ni
doping, reveals the unexpected impurity effect on inducing and enhancing
superconductivity in this novel layered materialsComment: 16 pages, 5 figures. Comments are welcom
Generalization and fine mapping of European ancestry-based central adiposity variants in African ancestry populations
Central adiposity measures such as waist circumference (WC) and waist-to-hip ratio (WHR) are associated with cardiometabolic disorders independently of BMI and are gaining clinically utility. Several studies report genetic variants associated with central adiposity, but most utilize only European ancestry populations. Understanding whether the genetic associations discovered among mainly European descendants are shared with African ancestry populations will help elucidate the biological underpinnings of abdominal fat deposition
A Novel Role of Matrix Metalloproteinase-8 in Macrophage Differentiation and Polarization
This work forms part of the research themes contributing to the translational research portfolio of Barts and the London Cardiovascular Biomedical Research Unit, which is supported and funded by the National Institute of Health Research
Gaussian Boson Sampling with Pseudo-Photon-Number Resolving Detectors and Quantum Computational Advantage
We report new Gaussian boson sampling experiments with
pseudo-photon-number-resolving detection, which register up to 255 photon-click
events. We consider partial photon distinguishability and develop a more
complete model for characterization of the noisy Gaussian boson sampling. In
the quantum computational advantage regime, we use Bayesian tests and
correlation function analysis to validate the samples against all current
classical mockups. Estimating with the best classical algorithms to date,
generating a single ideal sample from the same distribution on the
supercomputer Frontier would take ~ 600 years using exact methods, whereas our
quantum computer, Jiuzhang 3.0, takes only 1.27 us to produce a sample.
Generating the hardest sample from the experiment using an exact algorithm
would take Frontier ~ 3.1*10^10 years.Comment: submitted on 10 Apri
- …