Some exact results for the many body problems in one dimension with repulsive delta function interaction

Nov, 1967
10 pages
Published in:
  • Phys.Rev.Lett. 19 (1967) 1312-1314

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Abstract: (APS)
The repulsive δ interaction problem in one dimension for N particles is reduced, through the use of Bethe's hypothesis, to an eigenvalue problem of matrices of the same sizes as the irreducible representations R of the permutation group SN. For some R's this eigenvalue problem itself is solved by a second use of Bethe's hypothesis, in a generalized form. In particular, the ground-state problem of spin-½ fermions is reduced to a generalized Fredholm equation.