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Related papers: Holographic model for charmonium dissociation

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A cosmological model of an holographic dark energy interacting with dark matter throughout a decaying term of the form $Q=3(\lambda_1\rho_{DE} + \lambda_2\rho_m) H$ is investigated. General constraint on the parameters of the model are…

General Relativity and Quantum Cosmology · Physics 2008-11-26 Norman Cruz , Samuel Lepe , Francisco Pena , Joel Saavedra

The LHCb Collaboration recently observed new structures in the invariant mass spectrum of $J/\psi J/\psi$ meson pairs produced in proton-proton collisions, including a narrow peak around $6.2$ GeV. This study investigates the thermal…

High Energy Physics - Phenomenology · Physics 2025-06-11 Ö. E. Demircan , H. Dağ , H. Sundu , J. Y. Süngü , E. V. Veliev

Decaying dark matter models provide a physically motivated way of channeling energy between the matter and radiation sectors. In principle, this could affect the predicted value of the Hubble constant in such a way as to accommodate the…

Cosmology and Nongalactic Astrophysics · Physics 2022-07-04 Emil Brinch Holm , Thomas Tram , Steen Hannestad

We study the holographic dark energy (HDE) model in generalized Brans-Dicke scenario with a non-minimal coupling between the scalar field and matter lagrangian namely Chameleon Brans Dicke (CBD) mechanism. In this study we consider the…

General Relativity and Quantum Cosmology · Physics 2014-07-02 K. Saaidi , H. Sheikhahmadi , T. Golanbari , S. W. Rabiei

The holographic dark energy model is one of the important ways for dealing with the dark energy problems in the quantum gravity framework. In this model, the dimensionless parameter $c$ plays an essential role in determining the evolution…

Astrophysics · Physics 2008-11-26 Yin-Zhe Ma , Xin Zhang

The consideration of the holographic dark energy approach and matter creation effects in a single cosmological model is carried out in this work accordingly, we discuss some cases of interest. We test this cosmological proposal against…

General Relativity and Quantum Cosmology · Physics 2022-10-19 V. H. Cárdenas , Miguel Cruz , Samuel Lepe

We consider two high-frequency thermal processes in uniformly heated harmonic crystals relaxing towards equilibrium: (i) equilibration of kinetic and potential energies and (ii) redistribution of energy among spatial directions. Equation…

Statistical Mechanics · Physics 2017-08-01 Vitaly A. Kuzkin , Anton M. Krivtsov

I review holographic models for (dense and cold) nuclear matter, neutron stars, and their mergers. I start by a brief general discussion on current knowledge of cold QCD matter and neutron stars, and go on discussing various approaches to…

High Energy Physics - Phenomenology · Physics 2022-07-13 Matti Jarvinen

The temperature dependent energy, mass and some of thermodynamic quantities of charmonium and bottomonium have been calculated by solving the radial Schr{\"{o}}dinger equation with the extended Cornell potential at finite temperature using…

High Energy Physics - Phenomenology · Physics 2022-04-05 C. Aydın

We consider holographic cosmological models of dark energy in which the infrared cutoff is set by the Hubble's radius. We show that any interacting dark energy model, regardless of its detailed form, can be recast as a non interacting model…

Cosmology and Nongalactic Astrophysics · Physics 2013-01-16 Ivan Duran , Luca Parisi

The charmonium dissociation by mesons in relativistic heavy-ion reactions is analyzed within the Regge approach. It is shown that the inclusion of the initial and final state interactions in the dissociation of J/Psi to bar{D}* D* close to…

High Energy Physics - Phenomenology · Physics 2008-11-26 Gennady I. Lykasov , Wolfgang Cassing

Lorentz scalar and mass interactions are studied in more detail in the framework of a reduced Dirac equation for heavy quark-antiquark mesons. A microscopic model for these interactions is proposed and analyzed. The charmonium mass spectrum…

High Energy Physics - Phenomenology · Physics 2023-02-22 M. De Sanctis

Different holographic dark-energy models are studied from a unifying point of view. We compare models for which the Hubble scale, the future event horizon or a quantity proportional to the Ricci scale are taken as the infrared cutoff…

Cosmology and Nongalactic Astrophysics · Physics 2015-03-19 Sergio del Campo , Júlio. C. Fabris , Ramón Herrera , Winfried Zimdahl

In this dissertation we use the D3/D7 model in gauge/gravity duality to investigate the effects of finite temperature and particle density on matter in strongly coupled super-Yang-Mills gauge theories, which we interpret as models for the…

High Energy Physics - Theory · Physics 2010-12-16 Felix Rust

Quantum turbulence is a far-from-equilibrium process characterized by high nonlinearity. Holographic duality provides a systematic framework for simulating the decaying $(3+1)$-dimensional quantum turbulence by numerically solving the dual…

High Energy Physics - Theory · Physics 2025-03-11 Hua-Bi Zeng , Chuan-Yin Xia , Wei-Can Yang , Yu Tian , Makoto Tsubota

Using a new version of the holographic principle, a constant term was introduced, which conduces to the description of the standard cosmological LCDM model, and unifies under the same concept the dark matter and dark energy phenomena. The…

High Energy Physics - Theory · Physics 2011-02-03 L. N. Granda

Charmonium dissociation cross sections due to flavor-exchange charmonium-baryon scattering are computed in the constituent quark model. We present results for inelastic $J/\psi N$ and $\eta_c N$ scattering amplitudes and cross sections into…

Nuclear Theory · Physics 2008-11-26 J. P. Hilbert , N. Black , T. Barnes , E. S. Swanson

We study heavy flavor properties at finite temperature in the framework of a relativistic potential model. With an improved method to solve the three-body Dirac equation, we determine a universal set of model parameters for both mesons and…

Nuclear Theory · Physics 2020-08-21 Shuzhe Shi , Jiaxing Zhao , Pengfei Zhuang

The thermal-photon emission from strongly coupled gauge theories at finite temperature is calculated using holographic models for QCD in the Veneziano limit (V-QCD). The emission rates are then embedded in hydrodynamic simulations combined…

High Energy Physics - Phenomenology · Physics 2017-04-18 Ioannis Iatrakis , Elias Kiritsis , Chun Shen , Di-Lun Yang

We employ a Dyson-Schwinger equation model to effect a unified and uniformly accurate description of light- and heavy-meson observables, which we characterise by heavy-meson leptonic decays, semileptonic heavy-to-heavy and heavy-to-light…

Nuclear Theory · Physics 2010-03-04 M. A. Ivanov , Yu. L. Kalinovsky , C. D. Roberts