Low-density homogeneous symmetric nuclear matter: Disclosing dinucleons in coexisting phases
Author
dc.contributor.author
Arellano Sepúlveda, Hugo
Author
dc.contributor.author
Delaroche, Jean Paul
Admission date
dc.date.accessioned
2015-07-15T13:58:43Z
Available date
dc.date.available
2015-07-15T13:58:43Z
Publication date
dc.date.issued
2015
Cita de ítem
dc.identifier.citation
Eur. Phys. J. A (2015) 51: 7
en_US
Identifier
dc.identifier.other
DOI 10.1140/epja/i2015-15007-2
Identifier
dc.identifier.uri
https://repositorio.uchile.cl/handle/2250/131980
General note
dc.description
Artículo de publicación ISI
en_US
Abstract
dc.description.abstract
The effect of in-medium dinucleon bound states on self-consistent single-particle fields in Brueckner, Bethe and Goldstone theory is investigated in symmetric nuclear matter at zero temperature. To this end, dinucleon bound state occurences in the 1 S0 and 3 SD1 channels are explicitly accounted for -within the continuous choice for the auxiliary fields-while imposing self-consistency in Brueckner-Hartree-Fock approximation calculations. Searches are carried out at Fermi momenta in the range 0 < kF = 1.75 fm-1, using the Argonne v18 bare nucleon-nucleon potential without resorting to the effective-mass approximation. As a result, two distinct solutions meeting the self-consistency requirement are found with overlapping domains in the interval 0.130 fm-1 = kF = 0.285 fm-1, corresponding to mass densities between 10 11.4 and 10 12.4 g cm-3. Effective masses as high as three times the nucleon mass are found in the coexistence domain. The emergence of superfluidity in relationship with BCS pairing gap solutions is discussed.