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We introduce dissipative spectroscopy as a framework for extracting spectral information from quantum systems via controlled dissipation. By establishing a general dissipative response theory applicable to both Markovian and non-Markovian…

量子物理 · 物理学 2026-02-17 Xudong He , Yu Chen

Using an explicitly isospin-dependent parametric Equation of State (EOS) for the core of neutron stars (NSs) within the Bayesian statistical approach, we infer the EOS parameters of super-dense neutron-rich nuclear matter from three sets of…

高能天体物理现象 · 物理学 2020-08-07 Wen-Jie Xie , Bao-An Li

Data on nuclear level densities extracted from transmission data or gamma energy spectrum store the basic statistical information about nuclei at various temperatures. Generally this extracted data goes through model fitting using computer…

核理论 · 物理学 2019-09-17 Nishchal R. Dwivedi , Saniya Monga , Harjeet Kaur , Sudhir R. Jain

In this paper, Kernel Density Estimation (KDE) as a non-parametric estimation method is used to investigate statistical properties of nuclear spectra. The deviation to regular or chaotic dynamics, is exhibited by closer distances to Poisson…

核理论 · 物理学 2011-12-13 M. A. Jafarizadeh , N. Fouladi , H. Sabri , B. Rashidian Maleki

Background: Saturation of nuclear density is a fundamental property of atomic nuclei but in reality, the nuclear internal density distribution is not uniform, e.g., some nuclei are known to have the so-called bubble structure, in which the…

核理论 · 物理学 2025-01-10 Shuichiro Ebata , Wataru Horiuchi

We present a method using Feynman-like diagrams to calculate the statistical properties of random many-body potentials. This method provides a promising alternative to existing techniques typically applied to this class of problems, such as…

其他凝聚态物理 · 物理学 2015-06-23 Rupert Small , Sebastian Müller

The scandium isotopes 44,45Sc have been studied with the 45Sc(3He,alpha gamma)44Sc and 45Sc(3He,3He' gamma)45Sc reactions, respectively. The nuclear level densities and gamma-ray strength functions have been extracted using the Oslo method.…

Recently we proposed a formalism, based in nuclear statistical spectroscopy, for efficient computation of nuclear level density, or densities of states, through a sum of partitioned binomial functions (SUPARB). In this Letter we extend the…

核理论 · 物理学 2007-05-23 Calvin W. Johnson , Jameel-Un Nabi , W. Erich Ormand

Spectral analysis plays a crucial role in high-dimensional statistics, where determining the asymptotic distribution of various spectral statistics remains a challenging task. Due to the difficulties of deriving the analytic form, recent…

统计理论 · 数学 2025-04-02 Guoyu Zhang , Dandan Jiang , Fang Yao

Electron scattering provides a powerful tool to determine charge distributions and transition densities of nuclei. This tool will soon be available for short-lived neutron-rich nuclei. [Purpose] Beyond mean-field methods have been…

核理论 · 物理学 2015-03-10 J. M. Yao , M. Bender , P. -H. Heenen

The spectral statistics of low--lying states of $fp$ shell nuclei are studied by performing large shell--model calculations with a realistic nuclear interaction. For $Ca$ isotopes, we find deviations from the predictions of the…

核理论 · 物理学 2007-05-23 J. M. G. Gomez , V. R. Manfredi , L. Salasnich

The energy spectrum of nucleons in high-density nuclear matter is investigated in the framework of relativistic meson-nucleon many-body theory, employing the $1/N$ expansion method. The coupling of the nucleon with the particle-hole…

核理论 · 物理学 2009-09-25 Kazuhiro Tanaka

A method for calculation of Gamow-Teller transition rates is developed by using the concept of the Projected Shell Model (PSM). The shell model basis is constructed by superimposing angular-momentum-projected multi-quasiparticle…

核理论 · 物理学 2008-11-26 Zao-Chun Gao , Yang Sun , Y. -S. Chen

The nuclear Equation of State (EoS) lies in the center of the nuclear N-body problem as it describes the properties of the Nuclear Matter (NM) and determines the parameters of the nuclear interaction. In this work, we propose a theoretical…

核理论 · 物理学 2022-10-20 T. Depastas , G. A. Souliotis , M. Veselsky , A. Bonasera

Developing a predictive capability for inelastic scattering will find applications in multiple areas. Experimental data for neutron-nucleus inelastic scattering is limited and thus one needs a robust theoretical framework to complement it.…

核理论 · 物理学 2024-01-12 Aaina Thapa , Jutta Escher , Emanuel Chimanski , Marc Dupuis , Sophie Péru , Walid Younes

We study the regularity of the law of a quadratic form $Q(X,X)$, evaluated in a sequence $X = (X_{i})$ of independent and identically distributed random variables, when $X_{1}$ can be expressed as a sufficiently smooth function of a…

概率论 · 数学 2024-06-21 Ronan Herry , Dominique Malicet , Guillaume Poly

We present a theoretical framework to quantify statistical uncertainties in covariant density functional theory (CDFT) for both nuclear matter and finite nuclei, based on a relativistic point-coupling energy density functional (EDF). By…

核理论 · 物理学 2026-04-10 X. Zhang , C. C. Wang , C. R. Ding , J. M. Yao

A recent proposed method for $\alpha$-decay energies ($Q_\alpha$) [J.M. Dong, W. Zuo, and W. Scheid, Phys. Rev. Lett. \textbf{107}, 012501 (2011)] can reproduce experimental data of superheavy nuclei (SHN) with an $rms$-value of less than…

核理论 · 物理学 2014-09-01 Z. Li , B. Sun , C. H. Shen , W. Zuo

A microscopic method for calculating nuclear level densities (NLD) is developed, based on the framework of energy density functionals. Intrinsic level densities are computed from single-quasiparticle spectra obtained in a finite-temperature…

核理论 · 物理学 2020-11-18 Jie Zhao , Tamara Nikšić , Dario Vretenar

We study Gamow-Teller strength distributions in the neutron-deficient even isotopes (184-194)Pb in a search for signatures of deformation. The microscopic formalism used is based on a deformed quasiparticle random phase approximation (QRPA)…

核理论 · 物理学 2009-11-11 P. Sarriguren , O. Moreno , R. Alvarez-Rodriguez , E. Moya de Guerra