183 citations · 2.1k across the 86 of their papers we have counts for
32 papers · 1 filter
Hyperon-Induced Inhomogeneous Pion Condensation and Moat Regimes in Neutron Star Cores
Theo F. Motta, Randall H. V. Pradinett, Gastão Krein
We perform a stability analysis of the homogeneous ground state of nuclear matter against inhomogeneous perturbations of the pion condensate. In -equilibrium, restricting the ba…
Charmonium in nuclear matter and nuclei
J. J. Cobos Martínez, K. Tsushima, G. Krein +1
We present results for the -nucleus bound state energies for various nuclei using an effective Lagrangians approach. The attractive potentials for the in the nuclear med…
Comment on " interaction in leading order covariant chiral effective field theory"
J. Haidenbauer, G. Krein
Song et al. [Phys. Rev. C 102, 065208 (2020)] presented results for the interaction based on an extrapolation of lattice simulations by the HAL QCD Collaboration at unphysi…
Femtoscopic correlations and the interaction
J. Haidenbauer, G. Krein, T. C. Peixoto
We study the prospects for deducing constraints on the interaction of charmed baryons with nucleons from measurements of two-particle momentum correlation functions for . Th…
Masses of ground-state mesons and baryons, including those with heavy quarks
Pei-Lin Yin, Chen Chen, Gastao Krein +3
Using a confining, symmetry-preserving regularisation of a vectorvector contact interaction, we compute the spectra of ground-state pseudoscalar and vector meso…
Spectrum and structure of octet and decuplet baryons and their positive-parity excitations
Chen Chen, Gastao Krein, Craig D. Roberts +2
A continuum approach to the three valence-quark bound-state problem in quantum field theory, employing parametrisations of the necessary kernel elements, is used to compute the spe…
Transport responses from rate of decay and scattering processes in the Nambu--Jona-Lasinio model
Sabyasachi Ghosh, Fernando E. Serna, Aman Abhishek +2
We have calculated quark and anti-quark relaxation time by considering different possible elastic and inelastic scatterings in the medium. Comparative role of these elastic and ine…
Partial restoration of chiral symmetry in cold nuclear matter: the -meson case
J. J. Cobos-Martínez, K Tsushima, G Krein +1
The work presented at this workshop is divided into two parts. In the first part, the mass and decay width of the -meson in cold nuclear matter are computed in an effective Lagr…
Nonmesonic weak decay of charmed hypernuclei
C. E. Fontoura, F. Krmpotić, A. P. Galeão +2
We present a study of the nonmesonic weak decay (NMWD) of charmed hypernuclei using a relativistic formalism. We work within the framework of the independent particle shell model a…
SU(4) flavor symmetry breaking in D-meson couplings to light hadrons
C. E. Fontoura, J. Haidenbauer, G. Krein
The validity of SU(4)-flavor symmetry relations of couplings of charmed mesons to light mesons and baryons is examined with the use of quark-pair creation model a…
meson mass and decay width in nuclear matter and nuclei
J. J. Cobos-Martínez, K. Tsushima, G. Krein +1
The mass and decay width of the meson in cold nuclear matter are computed in an effective Lagrangian approach. The medium dependence of these properties are obtained by evaluat…
Charmed mesons at finite temperature and chemical potential
Fernando E. Serna, Gastão Krein
We compute the masses of the pseudoscalar mesons , and at finite temperature and baryon chemical potential. The computations are based on a symmetry- preserving D…
Symmetry-preserving contact interaction model for heavy-light mesons
F. E. Serna, M. A. Brito, G. Krein
We use a symmetry-preserving regularization method of ultraviolet divergences in a vector-vector contact interac- tion model for low-energy QCD. The contact interaction is a repres…
Mesonic Decay of Charm Hypernuclei
Sabyasachi Ghosh, Carlos E. Fontoura, Gastão Krein
hypernuclei are expected to have binding energies and other properties similar to those of strange hypernuclei in view of the similarity between the quark structures of the…
Excited hadrons and the analytical structure of bound-state interaction kernels
Bruno El-Bennich, Gastão Krein, Eduardo Rojas +1
We highlight Hermiticity issues in bound-state equations whose kernels are subject to a highly asymmetric mass and momentum distribution and whose eigenvalue spectrum becomes compl…
Shear and Bulk Viscosities of Quark Matter from Quark-Meson Fluctuations in the Nambu--Jona-Lasinio model
Sabyasachi Ghosh, Thiago C. Peixoto, Victor Roy +2
We have calculated the temperature dependence of shear and bulk viscosities of quark matter due to quark-meson fluctuations. The quark thermal width originating from quantu…
Effects of equation of state on hydrodynamic expansion, spectra, flow harmonics and two-pion interferometry
Danuce M. Dudek, Wei-Liang Qian, Chen Wu +5
We perform an extensive study of the role played by the equation of state in the hydrodynamic evolution of the matter produced in relativistic heavy ion collisions. By using the sa…
Shear viscosity of pion gas due to and interactions
Sabyasachi Ghosh, Gastão Krein, Sourav Sarkar
We have evaluated the shear viscosity of pion gas taking into account its scattering with the low mass resonances, and during propagation in the medium. The thermal width (…
Flavor SU(4) breaking between effective couplings
Bruno El-Bennich, Gastão Krein, Lei Chang +2
Using a framework in which all elements are constrained by Dyson-Schwinger equation studies in QCD, and therefore incorporates a consistent, direct and simultaneous description of…
DN interaction from meson exchange
J. Haidenbauer, G. Krein, Ulf-G. Meißner +1
A model of the DN interaction is presented which is developed in close analogy to the meson-exchange KbarN potential of the Juelich group utilizing SU(4) symmetry constraints. The…
J/Psi mass shift in nuclear matter
G. Krein, A. W. Thomas, K. Tsushima
The mass shift in cold nuclear matter is computed using an effective Lagrangian approach. The mass shift is computed by evaluating and meson loop contributions to t…
Dbar-N interaction from meson-exchange and quark-gluon dynamics
J. Haidenbauer, G. Krein, Ulf-G. Meißner +1
We investigate the Dbar-N interaction at low energies using a meson-exchange model supplemented with a short-distance contribution from one-gluon-exchange. The model is developed i…
Nonequilibrium dynamics of quantum fields
R. L. S. Farias, N. C. Cassol-Seewald, G. Krein +1
The nonequilibrium effective equation of motion for a scalar background field in a thermal bath is studied numerically. This equation emerges from a microscopic quantum field theor…
Phi-Phi Back-to-Back Correlations in Finite Expanding Systems
Sandra S. Padula, Y. Hama, G. Krein +2
Back-to-Back Correlations (BBC) of particle-antiparticle pairs are predicted to appear if hot and dense hadronic matter is formed in high energy nucleus-nucleus collisions. The BBC…