The neutrino response of low-density neutron matter from the virial expansion

C. J. Horowitz, A. Schwenk

Research output: Contribution to journalArticlepeer-review

39 Scopus citations

Abstract

We generalize our virial approach to study spin-polarized neutron matter and the consistent neutrino response at low densities. In the long-wavelength limit, the virial expansion makes model-independent predictions for the density and spin response, based only on nucleon-nucleon scattering data. Our results for the neutrino response provide constraints for random-phase approximation or other model calculations, and we compare the virial vector and axial response to response functions used in supernova simulations. The virial expansion is suitable to describe matter near the supernova neutrinosphere, and this work extends the virial equation of state to predict neutrino interactions in neutron matter.

Original languageEnglish
Pages (from-to)326-332
Number of pages7
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume642
Issue number4
DOIs
StatePublished - 16 Nov 2006
Externally publishedYes

Bibliographical note

Funding Information:
We thank Isaac Vidana for providing us with the Brueckner results. This work is supported by the US Department of Energy under Grants Nos. DE-FG02-87ER40365 and DE-FG02-97ER41014.

Funding

We thank Isaac Vidana for providing us with the Brueckner results. This work is supported by the US Department of Energy under Grants Nos. DE-FG02-87ER40365 and DE-FG02-97ER41014.

FundersFunder number
U.S. Department of EnergyDE-FG02-97ER41014, DE-FG02-87ER40365

    Keywords

    • Low-density neutron matter
    • Neutral-current neutrino scattering
    • Virial expansion

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