Nuclear response at zero and finite temperature

Abstract

We present some recent developments on the nuclear many-body problem, such as the treatment of high-order correlations and finite temperature in the description of in-medium two-nucleon propagators. In this work we discuss two-time propagators of the particle-hole type, which describe the response of finite nuclei to external probes without nucleon transfer. The general theory is formulated in terms of the equation of motion method for these propagators with the only input from the bare nucleon-nucleon interaction. The numerical implementation was performed on the basis of the effective mason-nucleon Lagrangian in order to study the energy-dependent kernels of different complexity. The finite-temperature extension of the theory with $ph\otimes phonon$ configurations is applied to a study of the multipole response of medium-mass nuclei.

arXiv comment4 pages, 5 figures: Contribution to the Proceedings of The IV International Conference on Nuclear Structure and Dynamics NSD2019

References in corpus (26)

• A New Parameterization for the Lagrangian Density of Relativistic Mean Field Theory
• Isospin Character of the Pygmy Dipole Resonance in 124Sn
• Relativistic quasiparticle time blocking approximation. Dipole response of open-shell nuclei
• Covariant theory of particle-vibrational coupling and its effect on the single-particle spectrum
• Quasiparticle time blocking approximation within the framework of generalized Green function formalism
• Particle-vibration coupling within covariant density functional theory
• Mode-coupling and the pygmy dipole resonance in a relativistic two-phonon model
• Subtraction method and stability condition in the extended RPA theories
• Particle-vibration coupling effect on the $\beta$-decay of magic nuclei
• Low-energy dipole strength in 112,120Sn
• Population of dipole states via isoscalar probes: the splitting of pygmy dipole resonance in ${}^{124}$Sn}
• Nuclear response theory for spin-isospin excitations in a relativistic quasiparticle-phonon coupling framework
• Fine structure of the isovector giant dipole resonance in 208Pb: Characteristic scales and level densities
• Relativistic two-phonon model for low-energy nuclear response
• Description of electric dipole excitations in the tin isotopes within the quasiparticle time blocking approximation
• Electric dipole response of neutron-rich Calcium isotopes in relativistic quasiparticle time blocking approximation
• Application of an Extended Random Phase Approximation on Giant Resonances in Light, Medium and Heavy Mass Nuclei
• Coupling charge-exchange vibrations to nucleons in a relativistic framework: effect on Gamow-Teller transitions and beta-decay half-lives
• Finite-temperature relativistic nuclear field theory: an application to the dipole response
• Progress in Many Body Theory with the Equation of Motion method. Time dependent Density Matrix meets Self-Consistent RPA. Applications to solvable Models
• Nuclear response theory with multiphonon coupling in a covariant framework
• Nuclear Dipole Response in the Finite-Temperature Relativistic Time Blocking Approximation
• Self-consistency in the phonon space of the particle-phonon coupling model
• A formally exact one-frequency-only Bethe-Salpeter-like equation. Similarities and differences between GW +BSE and self-consistent RPA
• Pair Fluctuations in Ultra-small Fermi Systems within Self-Consistent RPA at Finite Temperature
• Pion-nucleon correlations in finite nuclei in a relativistic framework: effects on the shell structure