Screening Effects in Superfluid Nuclear and Neutron Matter within Brueckner Theory

Abstract

Effects of medium polarization are studied for ${}^1{S}_0$ pairing in neutron and nuclear matter. The screening potential is calculated in the RPA limit, suitably renormalized to cure the low density mechanical instability of nuclear matter. The selfenergy corrections are consistently included resulting in a strong depletion of the Fermi surface. All medium effects are calculated based on the Brueckner theory. The ${}^1{S}_0$ gap is determined from the generalized gap equation. The selfenergy corrections always lead to a quenching of the gap, which is enhanced by the screening effect of the pairing potential in neutron matter, whereas it is almost completely compensated by the antiscreening effect in nuclear matter.

8 pages, 6 Postscript figures

References in corpus (12)

• An accurate nucleon-nucleon potential with charge-independence breaking
• Influence of Induced Interactions on the Superfluid Transition in Dilute Fermi Gases
• From Brueckner Approach to Skyrme-type Energy Density Functional
• Many-body effects in nuclear structure
• Pairing properties of nucleonic matter employing dressed nucleons
• ${}^1{S}_0$ superfluid phase--transition in neutron matter with realistic nuclear potentials and modern many--body theories
• Dispersive effects in neutron matter superfluidity
• Screening Effects on ${}^1{S}_0$ Pairing in Neutron Matter
• Self-energy Effects in the Superfluidity of Neutron Matter
• Pairing Matrix Elements and Pairing Gaps with Bare, Effective and Induced Interactions
• Pairing in nuclear systems with effective Gogny and V_low-k interactions
• Screening of nuclear pairing in nuclear and neutron matter

Cited by in corpus (101)

• Physics of Neutron Star Crusts
• Further explorations of Skyrme-Hartree-Fock-Bogoliubov mass formulas. XII: Stiffness and stability of neutron-star matter
• Nuclear Energy Density Optimization
• Skyrme-Hartree-Fock-Bogoliubov nuclear mass formulas: Crossing the 0.6 MeV threshold with microscopically deduced pairing
• Neutron Stars and the Nuclear Equation of State
• The BCS-BEC crossover: From ultra-cold Fermi gases to nuclear systems
• Low-density neutron matter
• Further explorations of Skyrme-Hartree-Fock-Bogoliubov mass formulas. XI: Stabilizing neutron stars against a ferromagnetic collapse
• Superfluidity in nuclear systems and neutron stars
• Neutron Matter from Low to High Density
• Tests of the nuclear equation of state and superfluid and superconducting gaps using the Cassiopeia A neutron star
• Equation of state of superfluid neutron matter and the calculation of ${}^1{S}_0$ pairing gap
• Properties of the nuclear medium
• BCS-BEC crossover of neutron pairs in symmetric and asymmetric nuclear matter
• Warming Nuclear Pasta with Dark Matter: Kinetic and Annihilation Heating of Neutron Star Crusts
• Effective contact pairing forces from realistic calculations in infinite homogeneous nuclear matter
• Effective pairing interactions with isospin density dependence
• Superfluidity and Superconductivity in Neutron Stars
• Pairing in high-density neutron matter including short- and long-range correlations
• Pairing in high-density neutron matter including short- and long-range correlations
• Vortex pinning and dynamics in the neutron star crust
• Recent breakthroughs in Skyrme-Hartree-Fock-Bogoliubov mass formulas
• Equation of state of low--density neutron matter and the ${}^1{S}_0$ pairing gap
• Skyrme-Hartree-Fock-Bogoliubov mass models on a 3D Mesh: Effect of triaxial shape
• Non-empirical pairing energy functional in nuclear matter and finite nuclei
• Optimal pair density functional for description of nuclei with large neutron excess
• Non-empirical pairing functional
• The cluster structure of the inner crust of neutron stars in the Hartree-Fock-Bogoliubov approach
• Pairing in exotic neutron rich nuclei around the drip line and in the crust of neutron stars
• Lattice Calculation of Thermal Properties of Low-Density Neutron Matter with Pionless NN Effective Field Theory
• Skyrme-Hartree-Fock-Bogoliubov mass models on a 3D mesh: II. Time-reversal symmetry breaking
• BEC-BCS Crossover and the Liquid-Gas Phase Transition in Hot and Dense Nuclear Matter
• 3PF2 pairing in high-density neutron matter
• Entanglement between pairing and screening in the Gorkov-Melik-Barkhudarov correction to the critical temperature throughout the BCS-BEC crossover
• Pairing interactions and the vanishing pairing correlations in hot nuclei
• Role of diproton correlation in two-proton emission decay of the ${}^6$Be nucleus
• On the superfluid properties of the inner crust of neutron stars
• Gap equation with pairing correlations beyond mean field and its equivalence to a Hugenholtz-Pines condition for fermion pairs
• Competition between $T$=1 and $T$=0 pairing in $pf$-shell nuclei with $N=Z$
• Thermally-Activated Post-Glitch Response of the Neutron Star Inner Crust and Core. I: Theory
• The ${}^1$S${}_0$ pairing gap in neutron matter
• Pairing and short-range correlations in nuclear systems
• BCS-BEC crossover in nuclear matter with the relativistic Hartree-Bogoliubov theory
• Microscopic evaluation of the pairing gap
• Superfluid Phase Transitions and Effects of Thermal Pairing Fluctuations in Asymmetric Nuclear Matter
• Neutron pairing with medium polarization beyond the Landau approximation
• Many-body correlations in nuclear superfluidity
• Semi-microscopic model of pairing in nuclei
• Comparison between the Thomas-Fermi and Hartree-Fock-Bogoliubov Methods in the Inner Crust of a Neutron Star: The Role of Pairing Correlations
• Angle-dependent Gap state in Asymmetric Nuclear Matter
• Superfluid properties of the inner crust of neutron stars. II. Wigner-Seitz cells at finite temperature
• Screening and anti-screening of the pairing interaction in low-density neutron matter
• Medium polarization in asymmetric nuclear matter
• S-pairing in neutron matter. I. Correlated Basis Function Theory
• Microscopic Study of ${}^1{S}_0$ Superfluidity in Dilute Neutron Matter
• Dineutron correlations in quasi two-dimensional systems in a simplified model and possible relation to neutron-rich nuclei
• Properties of a quantum vortex in neutron matter
• Correlation functions for a di-neutron condensate in asymmetric nuclear matter
• Pairing in pure neutron matter
• Medium polarization effects in 3SD1 spin-triplet pairing
• ${}^1{S}_0$ pairing in neutron matter
• Intersections of ultracold atomic polarons and nuclear clusters: How is a chart of nuclides modified in dilute neutron matter?
• Linear Response Theory with finite-range interactions
• Many-body approximations to the superfluid gap and critical temperature in pure neutron matter
• Finite-size effects and collective vibrations in the inner crust of neutron stars
• Proton pairing in neutron stars from chiral effective field theory
• Pairing properties and specific heat of the inner crust of a neutron star
• Nuclear superfluidity at finite temperature
• Neutron-proton pairing in Nuclear Matter
• Pairing effects on neutrino transport in low-density stellar matter
• Proton-proton 1S0 pairing in neutron star
• Quantum vortices in fermionic superfluids: from ultracold atoms to neutron stars
• Pairing effects on spinodal decomposition of asymmetric nuclear matter
• The Auxiliary Field Diffusion Monte Carlo Method for Nuclear Physics and Nuclear Astrophysics
• Dineutron correlations and BCS-BEC crossover in nuclear matter with the Gogny pairing force
• BCS-BEC Crossover Effects and Pseudogap in Neutron Matter
• Heat capacity of low density neutron matter: from quantum to classical regimes
• Beyond mean-field corrections to the quasiparticle spectrum of superfluid Fermi gases
• Measuring the vortex-nucleus pinning force from pulsar glitch rates
• Quiescent luminosities of accreting neutron stars with different equation of states
• Renormalization group and Fermi liquid theory for many-nucleon systems
• Time-dependent nuclear energy-density functional theory toolkit for neutron star crust: Dynamics of a nucleus in a neutron superfluid
• Variational and parquet-diagram calculations for neutron matter. III. S-wave pairing
• Cooling of Isolated Neutron Stars with Pion Condensation: Possible Fast Cooling in a Low-Symmetry-Energy Model
• Extension of time-dependent Hartree-Fock-Bogoliubov equations
• Role of neutron pairing with density-gradient dependence in the semi-microscopic treatment of the inner crust of neutron stars
• ${}^1{S}_0$ pairing for neutrons in dense neutron matter induced by a soft pion
• Superfluid neutron matter with a twist
• The nucleardatapy toolkit for simple access to experimental nuclear data, astrophysical observations, and theoretical predictions
• Pairing effects on neutron matter equation of state and symmetry energy at subsaturation densities
• Role of the Symmetry Energy on the Structure of Neutron Stars with Unified Equations of State
• Nuclear superfluidity in isospin asymmetric matter within the Skyrme model
• Isospin-density dependent pairing from infinite nuclear matter to finite nuclei
• Phase transition to the state with nonzero average helicity in dense neutron matter
• Phase diagrams of neutron-proton superfluid in asymmetric nuclear matter
• Effects of dilute neutron matter on the neutron star crust equation of state
• Pairing correlations in exotic nuclei
• Coexistence of isospin I = 0 and I = 1 pairings in asymmetric nuclear matter
• Dynamical scheme for computing the mass parameter of a system in a medium
• Quasiparticle disintegration in fermionic superfluids
• Nuclear matter superfluidity in an effective hadronic field model with excluded volume corrections