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We have used an {\it ab initio} Gamow shell model to study the isospin symmetry breaking in the $A=16$ mirror nuclei of $^{16}$F, $^{16}$N, $^{16}$Ne and $^{16}$C. Starting from a chiral interaction with two-nucleon force (2NF) at N$^3$LO…

核理论 · 物理学 2023-12-29 S. Zhang , F. R. Xu , J. G. Li , B. S. Hu , Z. H. Cheng , N. Michel , Y. Z. Ma , Q. Yuan , Y. H. Zhang

Bottom-up coarse-grained (CG) modeling expands the spatial and temporal scales of molecular simulation by seeking a reduced, thermodynamically consistent representation of an atomistic model. Developments in CG theory have largely focused…

化学物理 · 物理学 2025-03-28 Patrick G. Sahrmann , Gregory A. Voth

In this paper, three multiscale methods for coupling of mesoscopic (compartment-based) and microscopic (molecular-based) stochastic reaction-diffusion simulations are investigated. Two of the three methods that will be discussed in detail…

亚细胞过程 · 定量生物学 2013-04-30 Mark B Flegg , Stefan Hellander , Radek Erban

Aims: for the first time the astrometric capabilities of the Multi-Conjugate Adaptive Optics (MCAO) facility GeMS with the GSAOI camera on Gemini-South are tested to quantify the accuracy in determining stellar proper motions in the…

太阳与恒星天体物理 · 物理学 2016-10-26 D. Massari , G. Fiorentino , A. McConnachie , A. Bellini , E. Tolstoy , P. Turri , D. Andersen , G. Bono , P. B. Stetson , J. -P. Véran

In this work, we aim to achieve a minimal extension of the quantum-number projected generator coordinate method (PGCM) to describe Gamow-Teller (GT) transition strengths in even-even nuclei and to compute the NME of $2\nu\beta\beta$ decay.…

核理论 · 物理学 2026-04-06 R. N. Chen , X. Lian , J. M. Yao , C. L. Bai

Hidden Markov Model (HMM) combined with Gaussian Process (GP) emission can be effectively used to estimate the hidden state with a sequence of complex input-output relational observations. Especially when the spectral mixture (SM) kernel is…

机器学习 · 计算机科学 2020-01-08 Yohan Jung , Jinkyoo Park

We explore the potential of the Gaussian Mixture Model (GMM), an unsupervised machine learning method, to identify coherent physical structures in the ISM. The implementation we present can be used on any kind of spatially and spectrally…

Two methods the complex energy shell model (CXSM) and the complex scaling (CS) approach were used for calculating isobaric analog resonances (IAR) in the Lane model. The IAR parameters calculated by the CXSM and the CS methods were checked…

核理论 · 物理学 2008-11-26 R. Id Betan , A. T. Kruppa , T. Vertse

The existence of the $0_3^+$ and $0_4^+$ states around 10 MeV excitation energy in ${^{12}{\rm C}}$ is confirmed by a fully microscopic 3$\alpha$ cluster model. Firstly, a GCM (generator coordinate method) calculation is performed by…

核理论 · 物理学 2016-11-09 Bo Zhou , Akihiro Tohsaki , Hisashi Horiuchi , Zhongzhou Ren

A new method to calculate level densities for non-interacting Fermions within the constant-spacing model with a finite number of states is developed. We show that asymptotically (for large numbers of particles or holes) the densities have…

核理论 · 物理学 2013-01-08 Adriana Pálffy , Hans A. Weidenmüller

We present an approach to derive effective shell-model interactions from microscopic nuclear forces. The similarity-transformed coupled-cluster Hamiltonian decouples the single-reference state of a closed-shell nucleus and provides us with…

核理论 · 物理学 2018-12-05 Z. H. Sun , T. D. Morris , G. Hagen , G. R. Jansen , T. Papenbrock

We investigate properties of the Generator Coordinate Method (GCM) on a collective basis of Antisymmetrized Quasi-Cluster (AQC) states to describe the cluster-shell competition in $^{20}$Ne and $^{24}$Mg due to the spin-orbit interaction.…

核理论 · 物理学 2011-01-28 N. Itagaki , J. Cseh , M. Płoszajczak

We present a benchmark study of generator coordinate method (GCM) combined with eigenvector continuation (EC) in two different schemes for the low-lying states of Lipkin-Meshkov-Glick (LMG) model, where the interaction strength is treated…

核理论 · 物理学 2024-08-27 Q. Y. Luo , X. Zhang , L. H. Chen , J. M. Yao

The Kohn-Sham method uses a single model system, and corrects it by a density functional the exact user friendly expression of which is not known and is replaced by an approximated, usable, model. We propose to use instead more than one…

化学物理 · 物理学 2021-12-28 Étienne Polack , Yvon Maday , Andreas Savin

In recent years, molecular dynamics (MD) simulations have emerged as a pivotal tool for understanding the structure, dynamics, and phase behavior in charged soft matter systems. To explore phenomena across greater length and time scales in…

计算物理 · 物理学 2024-07-18 Benjamin Bobin Ye , Shensheng Chen , Zhen-Gang Wang

The complex scaling method (CSM) is a useful similarity transformation of the Schr\"odinger equation, in which bound-state spectra are not changed but continuum spectra are separated into resonant and non-resonant continuum ones. Because…

核理论 · 物理学 2014-10-17 Takayuki Myo , Yuma Kikuchi , Hiroshi Masui , Kiyoshi Kato

Galaxy clustering is an important probe in the upcoming China Space Station Telescope (CSST) survey to understand the structure growth and reveal the nature of the dark sector. However, it is a long-term challenge to model this biased…

宇宙学与河外天体物理 · 物理学 2025-10-01 Shuren Zhou , Zhao Chen , Yu Yu

We present a comparative study of the Gaussian mixture model (GMM) and the Deep Autoencoder Gaussian Mixture Model (DAGMM) for estimating satellite quantum channel capacity, considering hybrid quantum noise (HQN) and transmission…

信号处理 · 电气工程与系统科学 2025-08-01 Mouli Chakraborty , Subhash Chandra , Avishek Nag , Anshu Mukherjee

We use the coupled cluster expansion ($\exp(S)$ method) to generate the complete ground state correlations due to the NN interaction. Part of this procedure is the calculation of the two-body G matrix inside the nucleus in which it is being…

核理论 · 物理学 2009-10-31 Jochen H. Heisenberg , Bogdan. Mihaila

For single-particle nonrelativistic quantum mechanics, a Gamow state is an eigenfunction of the Hamiltonian with complex eigenvalue. Gamow states are not normalizable; they depend on time via the usual multiplier exp(-iEt) supplemented by a…

量子物理 · 物理学 2022-04-13 Jonathan F. Schonfeld