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The in-medium modification to the neutrino-nucleon scattering rate is calculated in the relativistic random phase approximation in the framework of a hadronic meson exchange model, in view of applications to neutrino transport in supernovae…

核理论 · 物理学 2009-11-07 L. Mornas

The neutrino propagation in neutron stars is studied in the framework of the linear response method. The medium effects are treated in the non-relativistic Brueckner-Hartree-Fock approach either in the mean-field approximation or in the…

核理论 · 物理学 2014-11-18 Caiwan Shen , U. Lombardo , N. Van Giai , W. Zuo

In the present work, we investigate the neutral-current neutrino-nucleon scattering in the nuclear medium using various energy-density functional (EDF) models such as the KIDS (Korea-IBS-Daegu-SKKU) and SLy4, together with the quark-meson…

核理论 · 物理学 2023-06-28 Parada T. P. Hutauruk , Hana Gil , Seung-il Nam , Chang Ho Hyun

We calculate the scattering rate of low energy neutrinos in hot and dense neutron matter encountered in neutrons stars and supernova in the hydrodynamic regime. We find that the Brillouin peak, associated with the sound mode, and the…

核理论 · 物理学 2015-06-18 Gang Shen , Sanjay Reddy

We calculate the differential scattering rate for thermal neutrinos in a hot and dilute gas of interacting neutrons using linear response theory. The dynamical structure factors for density and spin fluctuations of the strongly interacting…

核理论 · 物理学 2018-08-08 Paulo F. Bedaque , Sanjay Reddy , Srimoyee Sen , Neill C. Warrington

Background: Inelastic neutrino-nucleus scattering through the weak neutral-current plays important role in stellar environment where transport of neutrinos determine the rate of cooling. Since there are no direct experimental data on…

核理论 · 物理学 2015-06-04 H. Djapo , N. Paar

We perform an extensive analysis of neutrino diffusion in quark matter within the MIT bag model at arbitrary temperature and degeneracy. We examine in detail the contribution of each of the relevant weak interaction processes to the total…

太阳与恒星天体物理 · 物理学 2015-06-19 Gustavo C. Colvero , Germán Lugones

The contribution of Lambda hyperons to neutrino scattering rates is calculated in the random phase approximation in a model where the interaction is described by a Skyrme potential. Finite temperature and neutrino trapping are taken into…

核理论 · 物理学 2008-11-26 L. Mornas

The mean free paths and in-medium scattering cross sections of energetic nucleons in neutron-rich nucleonic matter are investigated using the nucleon optical potential obtained within the relativistic impulse approximation with the…

核理论 · 物理学 2008-11-26 Wei-Zhou Jiang , Bao-An Li , Lie-Wen Chen

We generalize our virial approach to study the neutral current neutrino response of nuclear matter at low densities. In the long-wavelength limit, the virial expansion makes model-independent predictions for neutrino-nucleon scattering…

核理论 · 物理学 2017-02-08 C. J. Horowitz , O. L. Caballero , Zidu Lin , Evan O'Connor , A. Schwenk

We present a model for neutrino-nucleus scattering in the energy region relevant for present and forthcoming neutrino-oscillation experiments. The model is based on the RPA treatment of the nuclear responses in the quasi-elastic and…

核理论 · 物理学 2014-05-16 M. Martini , G. Chanfray , M. Ericson , J. Marteau

The neutral-current neutrino-nucleus scattering is calculated through the neutrino-induced knocked-out nucleon process in the quasielastic region by using a relativistic single particle model for the bound and continuum states. The incident…

核理论 · 物理学 2008-11-26 K. S. Kim , B. G. Yu , M. K. Cheoun , T. K. Choi , M. T. Chung

We calculate neutrino cross sections from neutral current reactions in the dense matter encountered in the evolution of a newly born neutron star. Effects of composition and of strong interactions in the deleptonization and cooling phases…

天体物理学 · 物理学 2008-11-26 Sanjay Reddy , Madappa Prakash

Effects of the in-medium modifications of nucleon form factors on neutrino interaction in dense matter are presented by considering both the weak and electromagnetic interactions of neutrinos with the constituents of the matter. A…

核理论 · 物理学 2020-01-08 Parada T. P. Hutauruk , Yongseok Oh , K. Tsushima

Supernova explosions are the most powerful neutrino sources. The neutrino emission is also the dominating cooling mechanism for a proto-neutron star, whose interior is mainly composed of extremely dense and hot nuclear matter. Neutrino…

核理论 · 物理学 2024-04-08 Mingya Duan , Michael Urban

We study inelastic neutrino scattering off hot nuclei for temperatures relevant under supernova conditions. The method we use is based on the quasiparticle random phase approximation extended to finite temperatures within the thermo field…

核理论 · 物理学 2014-03-18 Alan A. Dzhioev , A. I. Vdovin , J. Wambach , V. Yu. Ponomarev

In a nuclear medium, spin-dependent forces cause the nucleon spins to fluctuate with a rate $\Gamma_\sigma$. We have previously shown that as a consequence the effective axial-current neutrino-nucleon scattering cross section is reduced.…

天体物理学 · 物理学 2011-05-12 G. Raffelt , D. Seckel , G. Sigl

Neutrinos in core collapse supernovae are likely trapped by neutrino-nucleus elastic scattering. Using molecular dynamics simulations, we calculate neutrino mean free paths and ion-ion correlation functions for heterogeneous plasmas. Mean…

天体物理学 · 物理学 2007-05-23 O. L Caballero , C. J. Horowitz , D. K. Berry

The Super-Scaling Approach (SuSA) model, based on the analogies between electron and neutrino interactions with nuclei, is reviewed and its application to the description of neutrino-nucleus scattering is presented. The contribution of both…

高能物理 - 唯象学 · 物理学 2021-11-10 J. E. Amaro , M. B. Barbaro , J. A. Caballero , T. W. Donnelly , R. Gonzalez-Jimenez , G. D. Megias , I. Ruiz Simo

The nucleon-nucleon scattering in a large magnetic background is considered to find its potential to change the neutrino emissivity of the neutron stars. For this purpose we consider the one-pion-exchange approximation to find the NN…

高能物理 - 唯象学 · 物理学 2010-12-09 E. Bavarsad , M. Haghighat , R. Mohammadi
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