OFFSET
1,2
COMMENTS
From Andrey Zabolotskiy, Feb 24 2022: (Start)
The power-series parameter may be also written as J/4kT, depending on the particular form of the Hamiltonian.
a(n) = alpha_n / (n * (n-1)), where alpha_n are given in Table I of Shiroishi & Takahashi. (End)
REFERENCES
N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
LINKS
Andrey Zabolotskiy, Table of n, a(n) for n = 1..51
G. A. Baker et al., High-temperature series expansions for the spin-1/2 Heisenberg model by the method of irreducible representations of the symmetric group, Phys. Rev., 135 (1964), pages A_1272-A_1277.
Masahiro Shiroishi and Minoru Takahashi, Integral Equation Generates High-Temperature Expansion of the Heisenberg Chain, Phys. Rev. Lett., 89 (2002), 117201.
CROSSREFS
KEYWORD
sign
AUTHOR
EXTENSIONS
Name clarified, terms a(14) and beyond added by Andrey Zabolotskiy, Feb 24 2022
STATUS
approved