A proof is given for the trigonometric identities (1.1)–(1.5) arising in the perturbative treatment of chiral Potts model.
REFERENCES
1.
B. M. McCoy and W. Orrick, “Chiral Potts model,” preprint (in preparation).
2.
M.
Henkel
and J.
Lacki
, “Integrable chiral quantum chains and a new class of trigonometric sums
,” Phys. Lett. A
138
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(1989
).3.
M. L. Mehta, Matrix Theory, Les Editions de Physique, Les Ulis, France, 1989, Chap. 12.
4.
L. B. W. Jolley, Summation of Series (Dover, New York, 1961), formulas (443), (451), and (452).
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© 1995 American Institute of Physics.
1995
American Institute of Physics
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