lattice models of critical phenomena
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11: 23.2 Definitions and Periodic Properties
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§23.2(i) Lattices
… ► … ► and are meromorphic functions with poles at the lattice points. is even and is odd. …The function is entire and odd, with simple zeros at the lattice points. …12: 23.21 Physical Applications
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►The Weierstrass function plays a similar role for cubic potentials in canonical form .
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►Airault et al. (1977) applies the function to an integrable classical many-body problem, and relates the solutions to nonlinear partial differential equations.
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►where are the corresponding Cartesian coordinates and , , are constants.
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23.21.3
►Another form is obtained by identifying , , as lattice roots (§23.3(i)), and setting
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13: 23.4 Graphics
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§23.4(i) Real Variables
►Line graphs of the Weierstrass functions , , and , illustrating the lemniscatic and equianharmonic cases. … ► … ►Surfaces for the Weierstrass functions , , and . … ► …14: 23.9 Laurent and Other Power Series
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►Let be the nearest lattice point to the origin, and define
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►For , and with as in §23.3(i),
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23.9.6
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►Also, Abramowitz and Stegun (1964, (18.5.25)) supplies the first 22 terms in the reverted form of (23.9.2) as .
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15: 32.16 Physical Applications
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Statistical Physics
►Statistical physics, especially classical and quantum spin models, has proved to be a major area for research problems in the modern theory of Painlevé transcendents. … ►Other Applications
►For the Ising model see Barouch et al. (1973), Wu et al. (1976), and McCoy et al. (1977). …16: 23.5 Special Lattices
§23.5 Special Lattices
… ►§23.5(ii) Rectangular Lattice
… ►§23.5(iii) Lemniscatic Lattice
… ►§23.5(iv) Rhombic Lattice
… ►§23.5(v) Equianharmonic Lattice
…17: 23.23 Tables
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►2 in Abramowitz and Stegun (1964) gives values of , , and to 7 or 8D in the rectangular and rhombic cases, normalized so that and (rectangular case), or and (rhombic case), for = 1.
…05, and in the case of the user may deduce values for complex by application of the addition theorem (23.10.1).
►Abramowitz and Stegun (1964) also includes other tables to assist the computation of the Weierstrass functions, for example, the generators as functions of the lattice invariants and .
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18: 23.6 Relations to Other Functions
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►In this subsection , are any pair of generators of the lattice
, and the lattice roots , , are given by (23.3.9).
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►For further results for the -function see Lawden (1989, §6.2).
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►Again, in Equations (23.6.16)–(23.6.26), are any pair of generators of the lattice
and are given by (23.3.9).
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Rectangular Lattice
… ►General Lattice
…19: Foreword
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►22
2
D. R. Lide (ed.), A Century of Excellence in Measurement, Standards, and Technology,
CRC Press, 2001. The success of the original handbook, widely referred to as “Abramowitz and Stegun” (“A&S”), derived not only from the fact that it provided critically useful scientific data in a highly accessible format, but also because it served to standardize definitions and notations for special functions.
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►The DLMF may well serve as a model for the effective presentation of highly mathematical reference material on the Web.
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