Exactness in the WKB approximation for some homogeneous spaces

Jan, 1995
27 pages
Published in:
  • J.Math.Phys. 36 (1995) 4590-4611
e-Print:
Report number:
  • KYUSHU-HET-21

Citations per year

199520012007201320180123456
Abstract:
Analysis of the WKB exactness in some homogeneous spaces is attempted. CP NCP~N as well as its noncompact counterpart DN,1D_{N,1} is studied. U(N ⁣+ ⁣1)U(N\!+\!1) or U(N,1)U(N,1) based on the Schwinger bosons leads us to CP NCP~N or DN,1D_{N,1} path integral expression for the quantity, tre iHT{\rm tr} e~{-iHT}, with the aid of coherent states. The WKB approximation terminates in the leading order and yields the exact result provided that the Hamiltonian is given by a bilinear form of the creation and the annihilation operators. An argument on the WKB exactness to more general cases is also made.
  • field theoretical model: CP(N-1)
  • quantization
  • coherent state
  • approximation: semiclassical
  • Hamiltonian formalism