Publications in Refereed Journals


108. "Prethermalization and Thermalization in Models with Weak Integrability Breaking"
       
B. Bertini, F.H.L. Essler, S. Groha and N.J. Robinson
        to appear in PRL.


107.
"Complete Generalized Gibbs Ensemble in an Interacting Theory"
       
E. Ilievski, J. de Nardis, B. Wouters, J.-S. Caux, F.H.L. Essler and T. Prosen
       
to appear in PRL.

106.
"Quantum quench within the gapless phase of the spin-1/2 Heisenberg  XXZ spin chain"
       
M. Collura, P. Calabrese and F.H.L. Essler
       
Phys. Rev. B92, 125131 (2015).

105. "Spin-charge separated quasiparticles in one dimensional quantum fluids"
       
F.H.L. Essler, R.G. Pereira and I. Schneider
       
Phys. Rev. B91, 245150 (2015).

104. "Generalized Gibbs Ensembles for Quantum Field Theories"
       
F.H.L. Essler, G. Mussardo and M. Panfil
       
Phys. Rev. A91(R), 051602 (2014).

103. "Real-time dynamics in the one-dimensional Hubbard model"
       
L. Seabra, F.H.L. Essler, F. Pollmann, I. Schneider and T. Veness
       
Phys. Rev. B90, 245127 (2014).

102. "Quasi-particle breakdown in the quasi-one-dimensional Ising ferromagnet CoNb2O6"
       
N.J. Robinson, F.H.L. Essler, I. Cabrera and R. Coldea
         Phys. Rev. B90, 174406 (2014).

101. "Quantum quench in the sine-Gordon model"
       
B. Bertini, D. Schuricht and F.H.L. Essler
       
J. Stat. Mech. P10035 (2014).

100. "Light-cone dynamics after quantum quenches in spin chains"
       
L. Bonnes, F.H.L. Essler and A. Läuchli
       
Phys. Rev. Lett.
113, 187203 (2014).

99.
"Entanglement Entropies of the quarter-filled Hubbard model"
      
P. Calabrese, F.H.L. Essler and A. Läuchli
     
J. Stat. Mech. P09025 (2014).

98.
"Quench dynamics in a model with tuneable integrability breaking"
      
F.H.L. Essler, S. Kehrein, S.R. Manmana and N.J. Robinson
       Phys. Rev. B89, 165104 (2014).


97.
"Relaxation after quantum quenches in the spin-1/2 Heisenberg XXZ chain"
      
M. Fagotti, M. Collura, F.H.L. Essler and P. Calabrese
       Phys. Rev. B89, 125101 (2014).


96. "Stationary behaviour of observables after a quantum quench in the spin-1/2 Heisenberg XXZ chain"
      
M. Fagotti and F.H.L. Essler
       J. Stat. Mech. P07012 (2013).


95. "Reduced Density Matrix after a Quantum Quench "
      
M. Fagotti and F.H.L. Essler
      
Phys. Rev. B87, 245107  (2013).

94.
"Time evolution of local observables after quenching to an integrable model"
       
J.S Caux and F.H.L. Essler
       
Phys. Rev. Lett. 110, 257203 (2013).

93. "Shell-Filling Effect in the Entanglement Entropies of Spinful Fermions "
      
F.H.L. Essler, A. Läuchli and P. Calabrese
      
Phys. Rev. Lett. 110, 115701 (2013).

92.
"Dynamical Correlations after a Quantum Quench "
      
F.H.L. Essler, S. Evangelisti and M. Fagotti
      
Phys. Rev. Lett. 109, 247206 (2012).

91. "Quantum Quench in the Transverse Field Ising chain II: Stationary State Properties "
      
P. Calabrese, F.H.L. Essler and M. Fagotti
      
J. Stat. Mech. P07022 (2012).

90.
"Quantum Quench in the Transverse Field Ising chain I: Time evolution of order parameter correlators "
      
P. Calabrese, F.H.L. Essler and M. Fagotti
      
J. Stat. Mech. P07016 (2012).

89. "Dynamics in the Ising field theory after a quantum quench "
      
D. Schuricht and F.H.L. Essler
      J. Stat. Mech. P04017
(2012).

88. "Finite Wave Vector Pairing in Doped Two-Leg Ladders"
      
N.J. Robinson, F.H.L. Essler, E. Jeckelmann and A.M. Tsvelik
      
Phys. Rev. B85, 014402  (2012).

87. "Discrete Symmetry Breaking Transitions Between Paired Superfluids"
      
M.J. Bhaseen, S. Ejima, F.H.L. Essler, H. Fehske, M. Hohenadler and B.D. Simons
       
Phys. Rev. A85, 033636  (2012).

86. "Observation of Complex Bound States in the Spin-1/2 Heisenberg XXZ Chain using Local Quantum Quenches"
        M. Ganahl, E. Rabel, F.H.L. Essler and H.-G. Evertz
       
Phys. Rev. Lett. 108, 077206 (2012).

85.
"Anomalous Dynamical Line Shapes in a Quantum Magnet at Finite Temperature"
      
D.A. Tennant, B. Lake, A.J.A. James, F.H.L. Essler, S. Notbohm, H.-J. Mikeska, J. Fielden, P. Koegerler, P.C. Canfield and M.T.M. Telling
      
Phys. Rev. B85, 014402  (2012).

84. "Magnetic Properties of the Second Mott Lobe in Pairing Hamiltonians"
       
M.J. Bhaseen, S. Ejima, M. Hohenadler, A.O. Silver, F.H.L. Essler, H. Fehske and B.D. Simons
       
Phys. Rev. A84, 023635 (2011).

83. "Quantum Quench in the Transverse Field Ising Model"
       P. Calabrese, F.H.L. Essler and M. Fagotti
      
Phys. Rev. Lett. 106, 227203 (2011).

82.
"Current large deviation function for the open asymmetric simple exclusion process"
       J. de Gier and F.H.L. Essler
       Phys. Rev. Lett. 107, 010602
(2011).

81. " Phase diagram and continuous pair-unbinding transition in the bilinear-biquadratic S=1 Heisenberg chain in a magnetic field"
       S.R. Manmana, A.M. Läuchli, F.H.L. Essler and F. Mila
      
Phys.Rev. B83, 184433 (2011).

80. "Boundary Effects on the Local density of states of 1D Mott insulators and CDW states"
       D. Schuricht, F.H.L. Essler, A. Jaefari and E. Fradkin
      
Phys.Rev. B83, 035111 (2011).

79. "Ising Deconfinement Transition between Feshbach Resonant Superfluids"
        S. Ejima, M.J. Bhaseen, M. Hohenadler, F.H.L. Essler, H. Fehske and B.D. Simons
        Phys. Rev. Lett. 106, 015303 (2011).

78. "Low Temperature Dynamical Structure Factor of the 2-Leg  spin-1/2 Heisenberg Ladder"
        W.D. Goetze, U. Karahasanovic and F.H.L. Essler
        Phys. Rev. B82, 104417 (2010).

77. "Universal Corrections to Scaling for Block Entanglement in Spin-1/2 XX Chains"
       
P. Calabrese and F.H.L. Essler
      J. Stat. Mech.
Theor. Exp., P08029 (2010).

76. "Effects of Thermal Phase Fluctuations in a 2D Superconductor: an Exact Result for the Spectral Function"
        A.M. Tsvelik and F.H.L. Essler
      Phys. Rev. Lett. 105, 027002 (2010).

75.
"
Threshold Singularities in the One-Dimensional Hubbard Model"
        F.H.L. Essler
      Phys. Rev. B81, 205120 (2010).

74. "Parity effects in the scaling of block entanglement in gapless spin chains"
       
P. Calabrese, M. Campostrini, F.H.L. Essler and B. Nienhuis
      Phys. Rev. Lett.
104, 095701 (2010).

73. "Finite Temperature Dynamical Correlations in Massive Integrable Quantum Field Theories"
        F.H.L. Essler and R.M. Konik
      J. Stat. Mech. Theor. Exp., P09018 (2009).


 72. "Finite Temperature Dynamical Structure Factor of the Heisenberg-Ising Chain"
        A.J.A. James, W.D. Goetze and F.H.L. Essler
        Phys. Rev. B79, 214408 (2009).

71. "On the Spin-liquid Phase of One Dimensional Spin-1 Bosons"
        F.H.L. Essler, G.V. Shlyapnikov and A.M. Tsvelik
        J. Stat. Mech. Theor. Exp., P02027 (2009)
.

70. "Dynamical Correlations in the Spin-1/2 Heisenberg XXZ Chain in a staggered Field"
        I. Kuzmenko and F.H.L. Essler
        Phys. Rev. B 79, 024402 (2009)
.

69. "Slowest Relaxation Mode of the Partially Asymmetric Exclusion Process with Open Boundaries"
        J. deGier and F.H.L. Essler
        J. Phys. A41 485002 (2008)
.

68. "Finite Temperature Dynamical Structure Factor of Alternating Heisenberg Chains"
        A.J.A. James, F.H.L. Essler and R.M. Konik
        Phys. Rev. B 78, 094411 (2008)
.

67.
"
Modelling Magnetic Fluctuations in the Stripe Ordered State"
        R.M. Konik, F.H.L. Essler and A.M. Tsvelik
       
Phys. Rev. B 78, 214509 (2008).

66. "Local density of states of 1D Mott insulators and CDW states with a boundary"
       D. Schuricht, F.H.L. Essler, A. Jaefari and E. Fradkin
      
Phys. Rev. Lett. 101, 086403 (2008).

65. "A test of the g-ology model for one-dimensional interacting Fermi systems"
       A.V. Chubukov, D.L. Maslov and F.H.L. Essler
      
Phys. Rev. B 77, 161102(R) (2008).

64.
"
Finite Temperature Lineshapes in Gapped Quantum Spin Chains"
        F.H.L. Essler and R.M. Konik
        Phys. Rev. B 78, 100403(R) (2008).


63. "Dynamical Response Functions in the Quantum Ising Chain with a Boundary"
        D. Schuricht and F.H.L. Essler
       
J. Stat. Mech.: Theor. Exp. P11004 (2007).

62. "Luttinger liquid coupled to quantum spins: Flow equation approach to the Kondo necklace model"
       F.H.L. Essler, T. Kuzmenko and I.A. Zaliznyak
       Phys. Rev. B76, 115108
(2007).

61.  "Effective Forces Induced by Fluctuating Interface: Exact Results"
       D.B. Abraham, F.H.L. Essler and A. Maciolek
       Phys. Rev. Lett.
98, 170602 (2007).

60. "Dynamical Spin Response of Doped Two-Leg Hubbard-like Ladders"
        F.H.L. Essler and R.M. Konik
        Phys. Rev. B75, 144403 (2007).

59. "Exact Spectral Gaps of the Asymmetric Exclusion Process with Open Boundaries"
       J. deGier and F.H.L. Essler
       J. Stat. Mech. -Theory and Experiment, P12011 (2006).


58.
"
Thermodynamics of the one-dimensional Hubbard model in the spin-disordered regime"
       S. Ejima, F.H.L. Essler and F. Gebhard
       J. Phys. A39, 4845 (2006).

57. "Quantum phase transition in the one-dimensional extended Peierls-Hubbard model"
       H. Benthien, F.H.L. Essler and A. Grage
       Phys. Rev. B73, 085105 (2006).

56.
"
Bethe Ansatz Solution of the Partially Asymmetric Exclusion Process"
       J. deGier and F.H.L. Essler
       Phys. Rev. Lett. 95, 240601 (2005).

55. "Spin Dynamics of the Quasi Two Dimensional Spin-1/2 Quan tum Magnet Cs2CuCl4"
       M.J. Veillette, A.J.A. James and F.H.L. Essler
       Phys. Rev. B72, 134429 (2005).

54.
"
Continuum Limit of the Integrable sl(2/1) 3-\bar{3} Superspin Chain"
       F.H.L. Essler, H. Frahm and H. Saleur
       Nucl. Phys. B712, 513 (2005).

53.
"
Theory of Hybrid State in a Metal with a Small Fermi Surface and Strong Collective Excitations"
       F.H.L. Essler and A.M. Tsvelik
       Phys. Rev. B71, 195116 (2005).

52.
"Itineracy Effects on Spin Correlations in 1D Mott Insulators"

       M.J. Bhaseen, F.H.L. Essler and A. Grage
       Phys. Rev. B71, 020405(R) (2005).

51.
"Haldane-gap Chains in a Magnetic Field"
      
       F.H.L. Essler and I. Affleck

       J. Stat. Mech. -Theory and Experiment, P12006, (2004).

50. "Resonant Inelastic X-Ray Scattering Study of Holon-Antiholon Continuum in SrCuO2"
       Y.-J. Kim, J.P. Hill, H. Benthien, F.H.L. Essler, E. Jeckelmann et. al.
       Phys. Rev. Lett. 92, 134402 (2004).

49. "Dynamical Structure Factor of the Anisotropic Heisenberg Chain in a Transverse Field"
      J.-S. Caux, F.H.L. Essler and U. Löw,
       Phys. Rev. B68, 134431 (2003).

48. "Dynamical Structure Factor in Cu Benzoate and other Spin-1/2 Antiferromagnetic Chains"
     F.H.L. Essler, A. Furusaki and T. Hikihara,
      Phys. Rev. B68, 064410 (2003).

47. "Polarization Dependence of Spin Excitations in BaCu2Si2O7"
      A. Zheludev, S. Raymond, L.-P. Regnault, F.H.L. Essler, K. Kakurai, T. Matsuda and K. Uchinokura
      Phys. Rev. B67, 134406 (2003).

46. "Finite Temperature Spectral Function of Mott Insulators and Charge Density Wave States"
       F.H.L. Essler and A.M. Tsvelik,
       Phys. Rev. Lett. 90, 126401 (2003).

45. "Dynamical Density Correlation Function of 1D Mott Insulators in a Magnetic Field"
       D. Controzzi and F.H.L. Essler,
       Phys. Rev. B66, 165112 (2002).

44. "Quantum Criticalities in a Two-Leg Antiferromagnetic S=1/2 Ladder Induced by a Staggered Magnetic Field"
      Y.-J. Wang, F.H.L. Essler, M. Fabrizio and A.A. Nersesyan,
       Phys. Rev. B66, 024412 (2002).

43. "Weakly coupled one-dimensional Mott insulators"
       F.H.L. Essler and A.M. Tsvelik,
       Phys. Rev. B65, 115117 (2002).

42. "Spectral Function of a quarter-filled one-dimensional CDW insulator"
       F.H.L. Essler and A.M. Tsvelik,
       Phys. Rev. Lett.  88, 096403 (2002).

41. "Excitons in one-dimensional Mott insulators"
       F.H.L. Essler, F. Gebhard and E. Jeckelmann,
       Phys. Rev. B64,  125119 (2001).

40. "Finite-Temperature Dynamical Magnetic Susceptibility of quasi one-dimensional frustrated Heisenberg
       spin-1/2 Antiferromagnets"
       M. Bocquet,  F.H.L. Essler, A.M. Tsvelik and A.O. Gogolin,
       Phys. Rev. B64, 094425 (2001).

39. "Optical Conductivity of one-dimensional Mott Insulators"
       D. Controzzi, F.H.L. Essler and A.M. Tsvelik
       Phys. Rev. Lett. 86, 960 (2001).

38.  "Optical Conductivity of the half-filled Hubbard Chain"
         E. Jeckelmann, F. Gebhard and F. H. L. Essler
         Phys. Rev. Lett. 85, 3910 (2000).

37.  "A numerical method for detecting incommensurate correlations in the Heisenberg zigzag ladder"
       A. A. Aligia, C. D. Batista and F. H. L. Essler,
         Phys. Rev. B62, 3259 (2000).

36.  "On the Three-Particle Scattering Continuum in Quansi One Dimensional Integer Spin Heisenberg Magnets"
         F.H.L. Essler
         Phys. Rev. B62, 3264 (2000).

35.  "Exact Solution of a Partially Asymmetric Exclusion Model Using a Deformed Oscillator Algebra"
       R.A. Blythe, M.R. Evans, F. Colaiori and F.H.L. Essler
        J. Phys. A33, 2313 (2000).

34. "The Fate of Spinons in Spontaneously Dimerized spin-1/2 Ladders"
        D. Allen, F.H.L. Essler and A.A. Nersesyan
        Phys. Rev. B61, 8871 (2000).

33.  "Thermodynamics of Excitations of the One-Dimensional Hubbard Model"
         T. Deguchi, F.H.L. Essler, F. Göhmann, V.E. Korepin, A. Klümper and K. Kusakabe
         Phys. Reports 331 5, 197 (2000).

32. "Density Correlations in the Half-Filled Hubbard Model"
       F.H.L. Essler and H. Frahm
       Phys. Rev. B60, 8540 (1999).

31. "Roughening Transition in an Exactly Solvable  Terrace-Ledge-Kink Model"
       D.B. Abraham, F.H.L. Essler and F.T. Latrémolière
       Nucl. Phys. B556, 411 (1999).

30. "Sine-Gordon Low-Energy Effective Theory for Copper Benzoate"
       F.H.L. Essler
       Phys. Rev. B59, 14376 (1999).

29. "Form Factors in the half-filled Hubbard Model"
       F.H.L. Essler and V.E. Korepin
       Phys. Rev. B59, 1734 (1999).

28.  "Incommensurate Spin Correlations in Heisenberg Spin-1/2 Zig-Zag Ladders"
        A. A. Nersesyan, A. O. Gogolin and F. H. L. Essler
       Phys. Rev. Lett. 81, 910 (1998).

27. "Temperature Corrections to Conformal Field Theory"
       F.H.L. Essler, V.E. Korepin and F.T. Latrémolière
       Europ. Phys. Jour. B5, 559 (1998).

26. "Dynamical Magnetic Susceptibilities in Copper Benzoate"
        F.H.L. Essler and A.M. Tsvelik
       Phys. Rev. B57, 10592 (1998).

25.  "Quasi-1D Spin-1/2 Heisenberg Magnets in Their Ordered Phase: Correlation Functions"
       F.H.L. Essler, A.M. Tsvelik and G. Delfino
       Phys. Rev. B56, 11001 (1997).

24. "X-Ray Edge Singularity in Integrable Models of Correlated Electrons"
       F.H.L. Essler and H. Frahm
       Phys. Rev. B56, 6631 (1997).

23.  "Exact Solution of a t-J Chain with Impurity"
       G. Bedurftig, F.H.L. Essler and H. Frahm
       Nucl. Phys. B489, 697 (1997).

22.  "Determinant Representation for a Quantum Correlation Function of the Lattice Sine-Gordon Model"
        F.H.L. Essler, H. Frahm, A.R. Its and V.E. Korepin
       J. Phys. A30, 219 (1997).

21.  "Integrable Impurity in the Supersymmetric t-J Model"
       G. Bedurftig, F.H.L. Essler and H. Frahm
       Phys. Rev. Lett. 77, 5098 (1996).

20.  "The Supersymmetric t-J Model with a Boundary"
        F.H.L. Essler
       J. Phys. A29, 6183 (1996).

19. " Painleve Transcendent Describes Quantum Correlation Function of the XXZ Antiferromagnet away from its Free-Fermion Point"
       F.H.L. Essler, H. Frahm, A.R. Its and V.E. Korepin
       J. Phys. A29, 5619 (1996).

18. "Representations of the Quadraticc Algebra and Partially Asymmetric Diffusion with Open Boundaries
       F.H.L. Essler and V. Rittenberg
       J. Phys. A29, 3375 (1996).

17. "Integro-Difference Equation for a Correlation Function of the Spin-1/2 Heisenberg XXZ Chain"
        F.H.L. Essler, H. Frahm, A.R. Its and V.E. Korepin
       Nucl. Phys. B446, 448 (1995).

16. "Determinant Representation for Correlation Functions of Spin-1/2 XXX and XXZ Heisenberg Magnets"
       F.H.L. Essler, H. Frahm, A.G. Izergin and V.E. Korepin
       Comm. Math. Phys. 174, 191 (1995).

15. "A Note on Dressed S-Matrices in Models with Long-Range Interactions"
       F.H.L. Essler
       Phys. Rev. B51, 13357 (1995).

14. ``Correlation Function of the spin-1/2 XXX Antiferromagnet"
        V.E. Korepin, A.G. Izergin, F.H.L. Essler and D. Uglov
       Phys. Lett. A190, 182 (1994).

13. ``SU(2)xSU(2) Invariant Scattering Matrix of the Hubbard Model"
        F.H.L. Essler and V.E. Korepin
       Nucl. Phys. B426, 505 (1994).

12. "Scattering Matrix and Excitation Spectrum of the Hubbard Model"
       F.H.L. Essler and V.E. Korepin
       Phys. Rev. Lett. 72, 908 (1994).

11. ``Spectrum of Low-Lying Excitations in a Supersymmetric Extended Hubbard Model"
       F.H.L. Essler and V.E. Korepin
       Int. J. Mod. Phys. B8, 3243 (1994).

10. "Exact Solution of an Electronic Model of Superconductivity I"
       F.H.L. Essler, V.E. Korepin, and K. Schoutens
       Int. J. Mod. Phys. B8, 3205 (1994).

9.  "Electronic Model of Superconductivity"
       F.H.L. Essler, V.E. Korepin, and K. Schoutens
       Phys. Rev. Lett. 70, 73 (1993).

8. "Algebraic Bethe Ansatz and Higher Conservation Laws for the Supersymmetric t-J Model"
      F.H.L. Essler and V.E. Korepin
      Phys. Rev. B46, 9147 (1992).

7. ``New Exactly Solvable Model of Strongly Correlated Electrons Motivated by High-Tc Superconductivity"
      F.H.L. Essler, V.E. Korepin, and K. Schoutens
      Phys. Rev. Lett. 68, 2960 (1992).

6. "Completeness of the SO(4)-extended Bethe Ansatz for the one-dimensional Hubbard Model" 
      F.H.L. Essler, V.E. Korepin, and K. Schoutens
      Nucl. Phys. B384, 431 (1992).

5. ``Fine Structure of the Bethe Ansatz for the spin-½Heisenberg XXX Model"
      F.H.L. Essler, V.E. Korepin, and K. Schoutens
      J. Phys. A25, 4115 (1992).

4. ``New Eigenstates of the one-dimensional Hubbard Model"
      F.H.L. Essler, V.E. Korepin, and K. Schoutens
      Nucl. Phys. B372, 559 (1992).

3. "Complete Solution of the one-dimensional Hubbard Model"
      F.H.L. Essler, V.E. Korepin, and K. Schoutens
      Phys. Rev. Lett. 67, 3848 (1991).

2. "Covariant Quantization of the First-ilkSuperparticle"
      F.H.L. Essler, M. Hatsuda, T. Kimura, E.Laenen, A. Mikovic, W. Siegel andJ.P.Yamron
      Nucl. Phys. B364, 67 (1991).

1. ``BRST Operator for the First-ilk Superparticle"
      F.H.L. Essler, E. Laenen, W. Siegel, and J.P. Yamron
      Phys. Lett. B254, 411 (1991).
 


  Books and Review Articles

4.   "The One-Dimensional Hubbard Model"
        F.H.L. Essler, H. Frahm, F. Göhmann, A. Klümper and V.E. Korepin
        690 pages, Cambridge University Press, 2005, (ISBN-10: 0521802628 | ISBN-13: 9780521802628)

 3.   "Applications of Massive Integrable Quantum Field Theories to Problems in Condensed Matter Physics"
        F.H.L. Essler and R.M. Konik
        preprint cond-mat/0412421; published in the Ian Kogan Memorial Volume "From Fields to Strings:
        Circumnavigating Theoretical Physics", Eds M. Shifman, A. Vainshtein and J.F. Wheater,
        World Scientific, 2005, p. 684-831.

2.  "Dynamical Properties of one-dimensional Mott insulators"
        D. Controzzi, F.H.L. Essler and A.M. Tsvelik
         preprint cond-mat/0011439; published in "New Theoretical Approaches in Strongly Correlated Systems",
         Ed. A.M. Tsvelik, NATO Science Series II, Vol 23, Kluwer, 2001, p. 25-43.

1.   "Exactly Solvable Models of Strongly Correlated Electrons"
       reprint volume, eds. F.H.L. Essler and V.E. Korepin
       World Scientific, 1994. 


Conference Proceedings and other Publications

7.  "Massive Thirring Model"
       V.E. Korepin and F.H.L. Essler
        in ENCYCLOPEDIA OF MATHEMATICS Suppl. Vol. I, Ed. M. Hazewinkel, Kluwer Acad. Publ., p. 366, 1997.

6.  "Sine Gordon Quantum Magnets"
     
F.H.L. Essler
   
   Int. J. Mod. Phys. B13, 2915 (1999).

5.  "Dual Field Approach to Correlation Functions in the Heisenberg XXZ Spin Chain"
       F.H.L. Essler and V.E. Korepin
        in ``Recent Progress in Statistical Mechanics and Quantum Field Theory'', eds P. Bouwknegt,P. Fendley,
       J. Minahan, D.  Nemeschansky, K. Pilch, H. Saleur and N.P. Warner,
World Scientific 1995.

4.  "Extended Hubbard Model, Eta-Pairing and Supersymmetry"
       F.H.L. Essler
       J. Low Temp. Phys. 99, 415 (1995).

3.  "Exact Results on a Supersymmetric Extended Hubbard Model"
       F.H.L. Essler and V.E. Korepin
       in``The Hubbard model; Its Physics and Mathematical Physics'', eds D. Baeriswyl, D.K. Campbell,
       J.M.P.  Carmelo, F. Guinea and E. Louis, NATO ASI Series B343, Plenum 1995.

2.   "Symmetries of Strongly Correlated Electrons"
        V.E. Korepin and F.H.L. Essler
        in``The Hubbard model; Its Physics and Mathematical Physics", eds D. Baeriswyl, D.K. Campbell,
        J.M.P. Carmelo, F. Guinea and E. Louis, NATO ASI Series B343, Plenum 1995.

1.   "The Role of Symmetries in Systems of Strongly Correlated Electrons"
        F.H.L. Essler and V.E. Korepin
        in ``Correlation Effects in Low-Dimensional Electron Systems'', eds A. Okiji and N. Kawakami,
        Springer Series in Solid-State Sciences Vol. 118