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A two phase cascade is presented for the treatment of ultra-high energy ion-ion collisions at energies from 17-200 GeV. First a high energy, fast cascade is performed, in which original baryons and freed hard partons, if any, collide. This…

核理论 · 物理学 2008-11-26 D. E. Kahana , S. H. Kahana

By numerically solving the relativistic Boltzmann equations, we compute the time scale for relaxation to thermal equilibrium for an optically thick electron-positron plasma with baryon loading. We focus on the time scales of electromagnetic…

高能天体物理现象 · 物理学 2014-11-20 A. G. Aksenov , R. Ruffini , G. V. Vereshchagin

Full 3D calculations of small two-component Fermi gases under highly-elongated confinement, in which unlike fermions interact through short-range potentials with variable atom-atom s-wave scattering length, are performed using the…

其他凝聚态物理 · 物理学 2016-04-22 D. Blume , D. Rakshit

We study the charge-density dynamics within the two-dimensional extended Hubbard model in the presence of long-range Coulomb interaction across the metal-insulator transition point. To take into account strong correlations we start from…

强关联电子 · 物理学 2014-12-24 E. G. C. P. van Loon , H. Hafermann , A. I. Lichtenstein , A. N. Rubtsov , M. I. Katsnelson

In this work we outline a program for lattice QCD that would provide a first step toward understanding the strong and weak interactions of strange baryons. The study of hypernuclear physics has provided a significant amount of information…

核理论 · 物理学 2014-11-18 S. R. Beane , P. F. Bedaque , A. Parreno , M. J. Savage

We use first principles molecular dynamics simulations coupled to the thermodynamic integration method to study the hcp-bcc transition and melting of beryllium up to a pressure of 1600~GPa. We derive the melting line by equating solid and…

材料科学 · 物理学 2021-07-14 Jizhou Wu , Felipe Gonzalez , Burkhard Militzer

-We have performed a new efficient method to calculate numerically the transport coefficients at high temperature. The collision theory was treated to study singularities that occur when evaluating the collision cross section. The transport…

等离子体物理 · 物理学 2015-01-30 Ali Mahfouf , Pascal André , Géraldine Faure

The classical approximation may be applied to a number of problems in non-equilibrium field theory. The principles and limits of classical real-time lattice simulations are presented, with particular emphasis on the definition of particle…

高能物理 - 格点 · 物理学 2009-11-10 Jon-Ivar Skullerud

Reducing uncertainties in the nuclear matrix elements (NMEs) remains a critical challenge in designing and interpreting experiments aimed at discovering neutrinoless double beta ($0\nu\beta\beta$) decay. Here, we identify a class of…

核理论 · 物理学 2025-07-11 Yi Li , Xin Zhang , Giuliano Giacalone , Jiangming Yao

The semi-microscopic potential between heavy nuclei is evaluated for various colliding ions in the approach of frozen densities in the framework of the extended Thomas-Fermi approximation with hbar^2 correction terms in the kinetic energy…

核理论 · 物理学 2009-11-10 V. Yu. Denisov

Long-range quantum systems, in which the interactions decay as $1/r^{\alpha}$, are of increasing interest due to the variety of experimental set-ups in which they naturally appear. Motivated by this, we study fundamental properties of…

量子物理 · 物理学 2026-01-08 Jorge Sánchez-Segovia , Jan T. Schneider , Álvaro M. Alhambra

The calculations of the ratios of the Helium-like ion X-ray lines from C V to Si XIII are revisited in order to apply the results to density, temperature and ionization process diagnostics of data from high-resolution spectroscopy of the…

天体物理学 · 物理学 2007-05-23 D. Porquet , R. Mewe , J. S. Kaastra , J. Dubau , A. J. J. Raassen

Experiments are described in which a single, harmonically bound, beryllium ion in a Paul trap is put into Fock, thermal, coherent, squeezed, and Schroedinger cat states. Experimental determinations of the density matrix and the Wigner…

量子物理 · 物理学 2015-06-26 W. M. Itano , C. Monroe , D. M. Meekhof , D. Leibfried , B. E. King , D. J. Wineland

The systematics of Statistical Model parameters extracted from heavy-ion collisions at lower energies are exploited to extrapolate in the LHC regime. Predictions of various particle ratios are presented and particle production in central…

高能物理 - 唯象学 · 物理学 2009-11-11 I. Kraus , J. Cleymans , H. Oeschler , K. Redlich , S. Wheaton

We present results on the heavy quarkonium spectrum and spectral functions obtained by performing large-scale simulations of QCD for temperatures ranging from about 100 to 500 MeV, in the same range as those explored by LHC experiments. We…

高能物理 - 格点 · 物理学 2015-06-23 G. Aarts , C. Allton , W. Evans , P. Giudice , T. Harris , A. Kelly , S. Kim , M. P. Lombardo , S. Ryan , J-I Skullerud

Effective thermal masses of bosonic particles in a plasma play an important role in many different phenomena. We compute them in general supersymmetric models at leading order. The origin of different corrections is explicitly shown for the…

高能物理 - 唯象学 · 物理学 2014-11-17 D. Comelli , J. R. Espinosa

X-ray Thomson scattering is being developed as a method to measure the temperature, electron density, and ionization state of high energy density plasmas such as those used in inertial confinement fusion. X-ray laser sources have always…

等离子体物理 · 物理学 2015-06-12 J. Nilsen , W. R. Johnson , K. T. Cheng

We study the 9 Be ground-state energy with non-local ${\alpha}-$n and ${\alpha}-{\alpha}$ potentials derived from Cluster Effective Field Theory. The short-distance dependence of the interaction is regulated with a momentum cutoff. The…

核理论 · 物理学 2020-02-04 Elena Filandri , Paolo Andreatta , Carlo A. Manzata , Chen Ji , W. Leidemann , G. Orlandini

Recently we proposed a particle-number-conserving theory for nuclear pairing [Jia, Phys. Rev. C 88, 044303 (2013)] through the generalized density matrix formalism. The relevant equations were solved for the case when each single-particle…

核理论 · 物理学 2015-12-09 L. Y. Jia

Collisions of heavy ions (nuclei) at ultra-relativistic energies (sqrt(s_NN) >> 10 GeV per nucleon-nucleon collision in the centre of mass system) are regarded as a unique tool to produce in the laboratory a high energy density and high…

高能物理 - 唯象学 · 物理学 2010-12-21 A. Dainese