cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

Showing 1-10 of 11 results. Next

A002906 High temperature series for spin-1/2 Ising magnetic susceptibility on 2D square lattice.

Original entry on oeis.org

1, 4, 12, 36, 100, 276, 740, 1972, 5172, 13492, 34876, 89764, 229628, 585508, 1486308, 3763460, 9497380, 23918708, 60080156, 150660388, 377009364, 942106116, 2350157268, 5855734740, 14569318492, 36212402548, 89896870204
Offset: 0

Views

Author

Keywords

Comments

The zero-field susceptibility per spin is m^2/kT * Sum_{n >= 0} a(n) * v^n, where v = tanh(J/kT). (m is the magnetic moment of a single spin; this factor may be present or absent depending on the precise definition of the susceptibility.) The b-file has been obtained from the series by Guttmann and Jensen via the substitution t = v/(1-v^2). - Andrey Zabolotskiy, Feb 11 2022

References

  • C. Domb, Ising model, in Phase Transitions and Critical Phenomena, vol. 3, ed. C. Domb and M. S. Green, Academic Press, 1974; p. 380.
  • S. R. Finch, Mathematical Constants, Cambridge, 2003, pp. 391-406.
  • A. J. Guttmann, Asymptotic analysis of power-series expansions, pp. 1-234 of C. Domb and J. L. Lebowitz, editors, Phase Transitions and Critical Phenomena. Vol. 13, Academic Press, NY, 1989.
  • B. G. Nickel, personal communication.
  • 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).

Crossrefs

Cf. A002927 (low-temperature), A002908 (energy), A002920 (hexagonal lattice), A002910 (honeycomb), A002913 (cubic lattice), A005401 (Heisenberg).

Formula

a(n) ~ c * n^(3/4) * (1 + sqrt(2))^n, where c = 0.839697019... - Vaclav Kotesovec, May 04 2024

Extensions

Corrections and updates from Steven Finch
More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), Mar 01 2008

A002926 Low temperature series for spin-1/2 Ising magnetic susceptibility on 3-dimensional simple cubic lattice.

Original entry on oeis.org

0, 0, 1, 0, 12, -14, 135, -276, 1520, -4056, 17778, -54392, 213522, -700362, 2601674, -8836812, 31925046, -110323056, 393008712, -1369533048, 4844047090, -16947396000, 59723296431, -209328634116, 736260986208, -2582605180212, 9074182912884
Offset: 1

Views

Author

Keywords

References

  • C. Domb, Ising model, in Phase Transitions and Critical Phenomena, vol. 3, ed. C. Domb and M. S. Green, Academic Press, 1974; p. 421.
  • S. R. Finch, Mathematical Constants, Cambridge, 2003, pp. 391-406.
  • 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).
  • C. Vohwinkel, personal communication.

Crossrefs

Cf. A002913 (high temperature series); other quantities: A002915 (antiferromagnetic susceptibility), A002891 (partition function), A002929 (magnetization); other lattices: A002927 (square), A002924 (f.c.c.), A002925 (b.c.c.).

Extensions

Corrections and updates from Steven Finch
a(25)-a(27) from Bhanot et al. added by Andrei Zabolotskii, Feb 09 2022

A010556 High temperature series for spin-1/2 Ising magnetic susceptibility on 4D simple cubic lattice.

Original entry on oeis.org

1, 8, 56, 392, 2696, 18536, 126536, 863720, 5873768, 39942184, 271009112, 1838725896, 12457092504, 84392312392, 571140732808, 3865210690888, 26138072412040, 176752645426600, 1194553221342296, 8073068110703880, 54534614510976680
Offset: 0

Views

Author

Keywords

References

  • S. R. Finch, Mathematical Constants, Cambridge, 2003, pp. 391-406.

Crossrefs

Cf. A002906 (2D), A002913 (3D), A010579 (5D), A010580 (6D), A030008 (7D).

Extensions

a(17) corrected (was 176752645540264), a(18)-a(20) added using Butera & Pernici's formulas by Andrey Zabolotskiy, Aug 08 2022

A002916 High temperature series for spin-1/2 Ising specific heat on 3-dimensional simple cubic lattice.

Original entry on oeis.org

3, 33, 564, 8976, 155124, 2791308, 51382068, 962178084, 18258531348, 350143322088, 6772382631732, 131922552534036, 2585198190891636, 50919899448451512, 1007393565758096820, 20007153991627682124, 398699967207692643924, 7969220499183448073760, 159718349893920279061428
Offset: 0

Views

Author

Keywords

References

  • S. R. Finch, Mathematical Constants, Cambridge, 2003, pp. 391-406.
  • 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).

Crossrefs

Equals 3*A001408.
Cf. A002917 (b.c.c.), A002918 (f.c.c.), A001393 (partition function), A010571 (internal energy), A002913 (susceptibility), A002169 (Heisenberg model), A029872 (square, low-temperature).

Programs

Formula

Sum_{n>=0} a(n) * v^(2*n) = (v^2-1) * (-q/2*f(v)^2 - (v^2-1) * f'(v)^2 + f(v) * (2*v*f'(v) + (v^2-1)*f''(v))) / f(v)^2, where f(v) = Sum_{n>=0} A001393(n) * v^(2*n) and q = 6 is the number of nearest neighbors. - Andrey Zabolotskiy, Feb 15 2022

Extensions

Corrections and updates from Steven Finch
Terms a(13) and beyond from Andrey Zabolotskiy, Feb 15 2022

A010046 High-temperature expansion of Ising model susceptibility chi_4 for cubic lattice.

Original entry on oeis.org

2, 48, 1272, 38784, 1341408, 52186368, 2256454272, 107494477824, 5595152936448, 316081923944448, 19262189406185472, 1259828274265227264, 88026828815690047488, 6544693787367160086528, 515907116666737635459072, 42981965201161894878511104, 3773829205951827807017238528
Offset: 0

Views

Author

Keywords

Crossrefs

Cf. A010045 (square), A010047 (4D cubic), A010040 (chi_2, see also A002913), A010043 (mu_2).

Extensions

Name clarified, a(14)-a(16) using Butera & Pernici's formulas added by Andrey Zabolotskiy, Nov 25 2024

A010579 High temperature series for spin-1/2 Ising magnetic susceptibility on 5D simple cubic lattice.

Original entry on oeis.org

1, 10, 90, 810, 7210, 64170, 568970, 5044810, 44649930, 395180650, 3494051130, 30893156970, 272971707930, 2411975074570, 21302972395370, 188151452434090, 1661273238131050, 14668124524584170, 129481802727508250, 1142991284620073450, 10087904498275867530
Offset: 0

Views

Author

Keywords

References

  • S. R. Finch, Mathematical Constants, Cambridge, 2003, pp. 391-406.

Crossrefs

Cf. A002906 (2D), A002913 (3D), A010556 (4D), A010580 (6D), A030008 (7D).

Extensions

Corrections and updates from Steven Finch
Terms a(16)-a(20) added using Butera & Pernici's formulas by Andrey Zabolotskiy, Aug 09 2022

A010580 High temperature series for spin-1/2 Ising magnetic susceptibility on 6D simple cubic lattice.

Original entry on oeis.org

1, 12, 132, 1452, 15852, 173052, 1884972, 20532252, 223437852, 2431526492, 26447593812, 287669976492, 3128064123732, 34013987172972, 369792173040492, 4020299656610636, 43702216875039660, 475060467524653980, 5163624600479230260, 56125562454502452780, 610010748386503122684
Offset: 0

Views

Author

Keywords

References

  • S. R. Finch, Mathematical Constants, Cambridge, 2003, pp. 391-406.

Crossrefs

Cf. A002906 (2D), A002913 (3D), A010556 (4D), A010579 (5D), A030008 (7D).

Extensions

Corrections and updates from Steven Finch
Terms a(16)-a(20) added using Butera & Pernici's formulas by Andrey Zabolotskiy, Aug 09 2022

A002921 Susceptibility series for f.c.c. lattice.

Original entry on oeis.org

1, 12, 132, 1404, 14652, 151116, 1546332, 15734460, 159425580, 1609987708, 16215457188, 162961837500, 1634743178420, 16373484437340, 163778159931180, 1636328839130860
Offset: 0

Views

Author

Keywords

References

  • C. Domb, Ising model, in Phase Transitions and Critical Phenomena, vol. 3, ed. C. Domb and M. S. Green, Academic Press, 1974; p. 381.
  • 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).

Crossrefs

Cf. A002913 (cubic), A002914 (b.c.c.); A002918 (specific heat).
Cf. Heisenberg model: A002166; A002170 (cubic), A002168 (b.c.c.); A002165 (specific heat).

Extensions

a(13)-a(15) from McKenzie added by Andrey Zabolotskiy, Feb 05 2022

A010040 High-temperature expansion of Ising model susceptibility chi_2 for cubic lattice.

Original entry on oeis.org

1, 6, 60, 888, 16944, 403296, 11342400, 371718528, 13814409984, 577113570816, 26660675466240, 1354001083680768, 74774085533159424, 4471493494982516736, 287295290091420794880, 19770508871470350532608, 1448690057046948138123264, 112756550398510017376813056
Offset: 0

Views

Author

Keywords

Crossrefs

Cf. A002913, A010039 (square), A010041 (4D cubic), A010043 (mu_2), A010046 (chi_4), A002170 (Heisenberg).

Formula

E.g.f.: F(tanh(x)), where F(x) is the g.f. of A002913. - Andrey Zabolotskiy, Nov 19 2024

Extensions

Name clarified, terms a(15) and beyond using data from A002913 added by Andrey Zabolotskiy, Nov 25 2024

A030008 High temperature series for spin-1/2 Ising magnetic susceptibility on 7D simple cubic lattice.

Original entry on oeis.org

1, 14, 182, 2366, 30590, 395486, 5105870, 65919182, 850586702, 10975573182, 141586912166, 1826501185054, 23558885899318, 303871575267918, 3919114007263518, 50545912921275198, 651868436561980638, 8406864950367314046, 108415583649894484278, 1398136240855886669662, 18029995593288775967598
Offset: 0

Views

Author

Keywords

References

  • S. R. Finch, Mathematical Constants, Cambridge, 2003, pp. 391-406.

Crossrefs

Cf. A002906 (2D), A002913 (3D), A010556 (4D), A010579 (5D), A010580 (6D).

Extensions

Terms a(16)-a(20) added using Butera & Pernici's formulas by Andrey Zabolotskiy, Aug 09 2022
Showing 1-10 of 11 results. Next