The cosmological constant puzzle

Bass, Steven D.

doi:10.1088/0954-3899/38/4/043201

Cited by 225 publications

(302 citation statements)

References 59 publications

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“…15 symmetry energy. The strange-quark component of the wavefunction does not couple to the σ field and η-η ′ mixing is readily built into the model.…”

Section: The η and η ′ In Nucleimentioning

confidence: 99%

QCD Symmetries in $\eta $- and $\eta '$-Mesic Nuclei

Bass¹,

Thomas²

2014

Acta Phys. Pol. B

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We discuss the role of QCD symmetries and confinement in understanding η and η ′ mesic nuclei. η and η ′ bound states in nuclei are sensitive to the flavour-singlet component in the meson. The bigger the singlet component, the more attraction and the greater the binding. Recent results on the η ′ mass in nuclei from the CBELSA/TAPS collaboration are very similar to the prediction of the Quark Meson Coupling model. In the model η-η ′ mixing induces a factor of two enhancement of the η-nucleon scattering length a ηN relative to the prediction with a pure octet η with real part about 0.8 fm.

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“…15 symmetry energy. The strange-quark component of the wavefunction does not couple to the σ field and η-η ′ mixing is readily built into the model.…”

Section: The η and η ′ In Nucleimentioning

confidence: 99%

QCD Symmetries in $\eta $- and $\eta '$-Mesic Nuclei

Bass¹,

Thomas²

2014

Acta Phys. Pol. B

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“…To estimate the production of strange particles through hadronic channels, we will employ the hadronic UrQMD model (Bass et al ; Bleicher et al ). The model is based on an effective microscopic solution of the relativistic Boltzmann equation

p^{μ} \cdot \partial_{μ} f_{i} ((),, x^{ν}, p^{ν}) = C_{i} .

…”

Section: The Uqmd Modelmentioning

confidence: 99%

Sub‐threshold charm and strangeness production at GSI/FAIR energies

Bleicher

Steinheimer

2017

Astron Nachr

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Collisions of heavy ions allow the exploration of the properties and dynamics of strongly interacting matter in the laboratory. Especially, the production of particles below their threshold energy in elementary reactions allows gaining new information on the production mechanisms in nuclear matter. Here we explore the production of multi‐strange hadrons and of charmed hadrons in the GSI/FAIR energy regime, that is at bombarding energies in the GeV region.

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“…6 The evolution of the parton fraction of the total energy density at mid-pseudorapidity for different collision energies. ics) (Bass et al 1998;Bleicher et al 1999), cf. also Nasim et al (2010).…”

Section: Collective Flowmentioning

confidence: 99%

Parton‐hadron dynamics in heavy‐ion collisions

Bratkovskaya¹,

Ozvenchuk²,

Cassing³

et al. 2014

Astron Nachr

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The dynamics of partons and hadrons in relativistic nucleus-nucleus collisions is analyzed within the novel Parton-Hadron-String Dynamics (PHSD) transport approach, which is based on a dynamical quasiparticle model for the partonic phase (DQPM) including a dynamical hadronization scheme. The PHSD approach is applied to nucleus-nucleus collisions from low SPS to LHC energies. The traces of partonic interactions are found in particular in the elliptic flow of hadrons and in their transverse mass spectra. We investigate also the equilibrium properties of strongly-interacting infinite parton-hadron matter characterized by transport coefficients such as shear and bulk viscosities and the electric conductivity in comparison to lattice QCD results.Comment: 6 pages, 7 figures, Proceedings of the STARS2013 and SMFNS2013 conferences, 4-10 May 2013, Havana/Varadero, Cub

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The cosmological constant puzzle

Cited by 225 publications

References 59 publications

QCD Symmetries in $\eta $- and $\eta '$-Mesic Nuclei

QCD Symmetries in $\eta $- and $\eta '$-Mesic Nuclei

Sub‐threshold charm and strangeness production at GSI/FAIR energies

Parton‐hadron dynamics in heavy‐ion collisions

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