The spin-flavor dependence of nuclear forces from large-N QCD

作者: David B. Kaplan , Martin J. Savage

DOI: 10.1016/0370-2693(95)01277-X

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摘要: Abstract We show that nuclear interactions are SU (4) symmetric at leading order in chiral perturbation theory the large- N limit of QCD. The nucleons and delta resonances form a 20-dimensional representation we how Wigner's supermultiplet symmetry sm , under which transform as 4-dimensional representation, follows an accidental low energy symmetry. Exploiting allows one to express 18 independent Δ interaction operators invariant (2) I × J terms only two couplings. three flavor analogue 28 octet, decuplet couplings, has implications for hypernuclei strangeness “neutron” stars.

参考文章(41)
Edward Witten, Baryons in the 1/n Expansion Nuclear Physics. ,vol. 160, pp. 57- 115 ,(1979) , 10.1016/0550-3213(79)90232-3
P. Vogel, W. E. Ormand, Spin-isospin SU(4) symmetry in sd- and fp-shell nuclei. Physical Review C. ,vol. 47, pp. 623- 628 ,(1993) , 10.1103/PHYSREVC.47.623
P. Vogel, M. R. Zirnbauer, Suppression of the two-neutrino double-beta decay by nuclear-structure effects Physical Review Letters. ,vol. 57, pp. 3148- 3151 ,(1986) , 10.1103/PHYSREVLETT.57.3148
Markus A. Luty, John March-Russell, Baryons from quarks in the 1/N expansion Nuclear Physics. ,vol. 426, pp. 71- 93 ,(1994) , 10.1016/0550-3213(94)90126-0
Steven Weinberg, Nuclear forces from chiral lagrangians Physics Letters B. ,vol. 251, pp. 288- 292 ,(1990) , 10.1016/0370-2693(90)90938-3
Aneesh V. Manohar, Elizabeth Jenkins, Roger Dashen, Erratum: 1/Nc expansion for baryons Physical Review D. ,vol. 51, pp. 2489- 2489 ,(1995) , 10.1103/PHYSREVD.51.2489
Michael P. Mattis, Madhusree Mukerjee, It=Jt rule: A new large-Nc selection rule for meson-baryon scattering. Physical Review Letters. ,vol. 61, pp. 1344- 1347 ,(1988) , 10.1103/PHYSREVLETT.61.1344
C. Ordóñez, U. van Kolck, Chiral lagrangians and nuclear forces Physics Letters B. ,vol. 291, pp. 459- 464 ,(1992) , 10.1016/0370-2693(92)91404-W
Elizabeth Jenkins, Baryon hyperfine mass splittings large N QCD Physics Letters B. ,vol. 315, pp. 441- 446 ,(1993) , 10.1016/0370-2693(93)91638-4