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RESEARCH PRODUCT
Effect of three-body forces on response functions in infinite neutron matter
Jesús NavarroDany DavesneJeremy W. HoltAlessandro Pastoresubject
Body forcePhysicsNuclear and High Energy Physics[PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th]Nuclear Theory010308 nuclear & particles physicsFOS: Physical sciencesFísicaResidual01 natural sciencesNuclear Theory (nucl-th)Classical mechanicsExcited state0103 physical sciencesHomogeneous spaceEffective field theoryNeutronLimit (mathematics)010306 general physicsRandom phase approximationdescription
International audience; We study the impact of three-body forces on the response functions of cold neutron matter. These response functions are determined in the random phase approximation (RPA) from a residual interaction expressed in terms of Landau parameters. Special attention is paid to the non-central part, including all terms allowed by the relevant symmetries. Using Landau parameters derived from realistic nuclear two- and three-body forces grounded in chiral effective field theory, we find that the three-body term has a strong impact on the excited states of the system and in the static and long-wavelength limit of the response functions for which a new exact formula is established.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2015-01-01 |