References
- McGuire , JB . 1964 . J. Math. Phys. , 5 : 622
- Yang , CN . 1967 . Phys. Rev. Lett. , 19 : 1312
- Baxter , RJ . 1972 . Ann. Phys. N.Y. , 70 : 193
- Korepin , VE , Bogoliubov , NM and Izergin , AG . 1993 . Quantum Inverse Scattering Method and Correlation Functions , Cambridge : Cambridge University Press .
- Takahashi , M . 1999 . Thermodynamics of One-Dimensional Solvable Models , Cambridge : Cambridge University Press .
- Bethe Zeits , HA . 1931 . Physik , 71 : 205
- Batchelor , MT . 2007 . Physics Today , 60 : 36
- Batchelor , MT , Guan , X-W , Oelkers , N , Sakai , K , Tsuboi , Z and Foerster , A . 2003 . Phys. Rev. Lett. , 91 : 217202
- Uimin , GV . 1970 . JETP Lett. , 12 : 225
- Lai , CK . 1974 . J. Math. Phys. , 15 : 1675
- Sutherland , B . 1975 . Phys. Rev. B , 12 : 3795
- Bazhanov , VV . 1985 . Phys. Lett. B , 159 : 321
- Jimbo , M . 1986 . Comm. Math. Phys. , 102 : 537
- Perk , JHH and Schultz , CL . 1981 . Phys. Lett. A , 84 : 407
- Lieb , E , Schultz , T and Mattis , D . 1961 . Ann. Phys. N.Y. , 16 : 407
- Haldane , FDM . 1983 . Phys. Lett. A , 93 : 464
- Haldane , FDM . 1983 . Phys. Rev. Lett. , 50 : 1153
- Barnes , T , Dagotto , E , Riera , J and Swanson , ES . 1993 . Phys. Rev. B , 47 : 3196
- Dagotto , E and Rice , TM . 1996 . Science , 271 : 618
- Dagotto , E . 1999 . Rep. Prog. Phys. , 62 : 1525
- Lecheminant , P . 2005 . Frustrated Spin Systems , Edited by: Diep , HT . Singapore : World Scientific .
- Sachdev , S . 2000 . Science , 288 : 475
- White , SR . 1996 . Phys. Rev. B , 53 : 52
- Batista , CD and Ortiz , G . 2004 . Adv. Phys. , 53 : 1
- Johnston , DC , Johnson , JW , Goshorn , DP and Jacobson , AJ . 1987 . Phys. Rev. B , 35 : 219
- Dagotto , E , Riera , J and Scalapino , DJ . 1992 . Phys. Rev. B , 45 : 5744
- Johnston , DC , Troyer , M , Miyahara , S , Lidsky , D , Ueda , K , Azuma , M , Hiroi , Z , Takano , M , Isobe , M , Ueda , Y , Korotin , MA , Anisimov , VI , Mahajan , AV and Miller , LL . 2000 . arXiv:cond-mat/0001147 ,
- McCarron , EM , Subramanian , MA , Calabrese , JC and Harlow , RL . 1988 . Mater. Res. Bull. , 23 : 1355
- Siegrist , T , Schneemeyer , LF , Sunshine , SA , Waszczak , JV and Roth , RS . 1988 . Mater. Res. Bull. , 23 : 1429
- Hiroi , Z and Takano , M . 1995 . Nature , 377 : 41
- White , SR , Noack , RM and Scalapino , DJ . 1994 . Phys. Rev. Lett. , 73 : 886
- Gopalan , S , Rice , TM and Sigrist , M . 1994 . Phys. Rev. B , 49 : 8901
- Shelton , DG , Nersesyan , AA and Tsvelik , AM . 1996 . Phys. Rev. B , 53 : 8521
- Azuma , M , Fujishiro , Y , Takano , M , Nohara , M and Takagi , H . 1997 . Phys. Rev. B , 55 : R8658
- Fujiwara , N , Yasuoka , H , Fujishiro , Y , Azuma , M and Takano , M . 1998 . Phys. Rev. Lett. , 80 : 604
- Azuma , M , Hiroi , Z , Takano , M , Ishida , K and Kitaoka , Y . 1994 . Phys. Rev. Lett. , 73 : 3463
- Kojima , K , Keren , A , Luke , GM , Nachumi , B , Wu , WD , Uemura , YJ , Azuma , M and Takano , M . 1995 . Phys. Rev. Lett. , 74 : 2812
- Ishida , K , Kitaoka , Y , Tokunaga , Y , Matsumoto , S , Asayama , K , Azuma , M , Hiroi , Z and Takano , M . 1996 . Phys. Rev. B , 53 : 2827
- Mila , F . 2000 . Eur. J. Phys. , 21 : 499
- Rice , TM , Gopalan , S and Sigrist , M . 1993 . Europhys. Lett. , 23 : 445
- Sigrist , M , Rice , TM and Zhang , FC . 1994 . Phys. Rev. B , 49 : 12058
- Landee , CP , Turnbull , MM , Galeriu , C , Giantsidis , J and Woodward , FM . 2001 . Phys. Rev. B , 63 : 100402
- Chiari , B , Piovesana , O , Tarantelli , T and Zanazzi , PF . 1990 . Inorg. Chem. , 29 : 1172
- Chaboussant , G , Julien , M-H , Fagot-Revurat , Y , Lévy , LP , Berthier , C , Horvatić , M and Piovesana , O . 1997 . Phys. Rev. Lett. , 79 : 925
- Chaboussant , G , Fagot-Revurat , Y , Julien , M-H , Hanson , ME , Berthier , C , Morvatić , M , Lévy , LP and Piovesana , O . 1998 . Phys. Rev. Lett. , 80 : 2713
- Chaboussant , G , Crowell , PA , Lévy , LP , Piovesana , O , Madouri , A and Dailly , D . 1997 . Phys. Rev. B , 55 : 3046
- Watson , BC , Kotov , VN , Meisel , MW , Hall , DW , Granroth , GE , Montfrooij , WT , Nagler , SE , Jensen , DA , Backov , R , Petruska , MA , Fanucci , GE and Talham , DR . 2001 . Phys. Rev. Lett. , 86 : 5168
- Tanaka , H , Takatsu , K , Shiramura , W and Ono , T . 1996 . J. Phys. Soc. Japan , 65 : 1945
- Nakamura , T and Okamoto , K . 1998 . Phys. Rev. B , 58 : 2411
- Shiramura , W , Takatsu , K , Tanaka , H , Kamishima , K , Takahashi , M , Mitamura , H and Goto , T . 1997 . J. Phys. Soc. Japan , 66 : 1900
- Oosawa , A , Takamasu , T , Tatani , K , Abe , H , Tsujii , N , Suzuki , O , Tanaka , H , Kido , G and Kindo , K . 2002 . Phys. Rev. B , 66 : 104405
- Cavadini , N , Henggeler , T , Furrer , A , Gudel , HU , Kramer , K and Mutka , H . 1999 . Eur. Phys. J. B , 7 : 519
- Cavadini , N , Heigold , G , Henggeler , W , Furrer , A , Gudel , HU , Kramer , K and Mutka , H . 2000 . J. Phys: Condens. Matter , 12 : 5463
- Cavadini , N , Andreica , D , Gygax , FN , Schenck , A , Kramer , K , Gudel , HU , Mutka , H and Wildes , A . 2003 . Physica B , 335 : 37
- Müller , M and Mikeska , H-J . 2000 . J. Phys. Condens. Matter , 12 : 7633
- Müller , M , Mikeska , H-J and Cavadini , N . 2003 . J. Phys. Condens. Matter , 15 : 8513
- Oosawa , A , Fujisawa , M , Osakabe , T , Kakurai , K and Tanaka , H . 2003 . J. Phys. Soc. Japan , 72 : 1026
- Oosawa , A , Katori , HA and Tanaka , H . 2001 . Phys. Rev. B , 63 : 134416
- Hagiwara , M , Katori , HA , Schollwöck , U and Mikeska , H-J . 2000 . Phys. Rev. B , 62 : 1051
- Matsumoto , M , Normand , B , Rice , TM and Sigrist , M . 2002 . Phys. Rev. Lett. , 89 : 077203
- Tanaka , H , Shiramura , W , Takatsu , T , Kurniawan , B , Takahashi , M , Kamishima , K , Takizawa , K , Mitamura , H and Goto , T . 1998 . Physica B , 246–247 : 230
- Takatsu , K , Shiramura , W and Tanaka , H . 1997 . J. Phys. Soc. Japan , 66 : 1611
- Reigrotzki , M , Tsunetsugu , H and Rice , TM . 1994 . J. Phys.: Condens. Matter , 6 : 9235
- Chaboussant , G , Julien , M-H , Fagot-Revurat , Y , Hanson , M , Levy , LP , Berthier , C , Horvatic , M and Piovesana , O . 1998 . Eur. Phys. J. B , 6 : 167
- Chaboussant , G , Crowell , PA , Levy , LP , Piovesana , O , Madouri , A and Mailly , D . 1997 . Phys. Rev. B , 55 : 3046
- Troyer , M , Tsunetsugu , H and Würtz , D . 1994 . Phys. Rev. B , 50 : 13515
- Giamarchi , T and Tsvelik , AM . 1999 . Phys. Rev. B , 59 : 11398
- Affleck , I . 1991 . Phys. Rev. B , 43 : 3215
- Sorensen , ES and Affleck , I . 1993 . Phys. Rev. Lett. , 71 : 1633
- Oosawa , A , Ishii , M and Tanaka , H . 1999 . J. Phys. Condens. Matter , 11 : 265
- Nikuni , T , Oshikawa , M , Oosawa , A and Tanaka , H . 2000 . Phys. Rev. Lett. , 84 : 5868
- Kudo , K , Yawamata , M , Noji , T , Koike , Y , Nishizaki , T , Kobayashi , N and Tanaka , H . 2004 . J. Phys. Soc. Japan , 73 : 2358
- Sirker , J , Weiße , A and Sushkov , OP . 2005 . Physica B , 359–361 : 1318
- Miyahara , S and Ueda , K . 1999 . Phys. Rev. Lett. , 82 : 3701
- Kageyama , H , Yoshimura , K , Stern , R , Mushnikov , NV , Onizuka , K , Kato , M , Kosuge , K , Slichter , CP , Goto , T and Ueda , Y . 1999 . Phys. Rev. Lett. , 82 : 3168
- Kodama , K , Takigawa , M , Horvatic , M , Berthier , C , Kageyama , H , Ueda , Y , Miyahara , S , Becca , F and Mila , F . 2002 . Science , 298 : 395
- Hosokoshi , Y , Katoh , K , Nakazawa , Y , Nakano , H and Inoue , K . 2001 . J. Am. Chem. Soc. , 127 : 7921
- Katoh , K , Hosokoshi , Y , Inoue , K , Bartashevich , MI , Nakano , H and Goto , T . 2003 . J. Phys. Chem. Solids , 63 : 1277
- Hosokoshi , Y , Katoh , K and Inoue , K . 2003 . Synthetic Metals , 133–134 : 527
- Kolezhuk , AK and Mikeska , H-J . 1998 . Eur. Phys. J. B , 5 : 543
- Langariand , A and Martiń-Delgado , MA . 2000 . Phys. Rev. B , 62 : 11725
- Lou , J , Chen , C and Qin , S . 2001 . Phys. Rev. B , 64 : 144403
- Kolezhuk , AK , Mikeska , H-J and Yamamoto , S . 1997 . Phys. Rev. B , 55 : R3336
- Kolezhuk , AK , Mikeska , H-J , Maisinger , K and Schollwöck , U . 1999 . Phys. Rev. B , 59 : 13565
- Yamamoto , S . 1999 . Phys. Rev. B , 59 : 1024
- Yamamoto , S and Sakai , T . 1999 . J. Phys.: Condens. Matter , 11 : 5175
- Pati , SK , Ramasesha , S and Sen , D . 1997 . Phys. Rev. B , 55 : 8894
- Sakai , T and Okamoto , K . 2002 . Phys. Rev. B , 65 : 214403
- Zheng , W and Oitmaa , J . 2003 . Phys. Rev. B , 67 : 224421
- Hagiwara , M , Minami , K , Narumi , Y , Tatani , K and Kindo , K . 1998 . J. Phys. Soc. Japan, , 67 : 2209
- Nersesyan , AA and Tsvelik , AM . 1997 . Phys. Rev. Lett. , 78 : 3939
- Wang , Y . 1999 . Phys. Rev. B , 60 : 9236
- Kolezhuk , AK and Mikeska , H.-J . 1998 . Phys. Rev. Lett. , 80 : 2709
- Wang , Y and Schlottmann , P . 2000 . Phys. Rev. B , 62 : 3845
- Cai , S , Dai , J and Wang , Y . 2002 . Phys. Rev. B , 66 : 134403
- Batchelor , MT and Maslen , M . 1999 . J. Phys. A , 32 : L377
- de Gier , J and Batchelor , MT . 2000 . Phys. Rev. B , 62 : R3584
- Batchelor , MT , de Gier , J and Maslen , M . 2001 . J Stat. Phys. , 102 : 559
- Maslen , M , Batchelor , MT and de Gier , J . 2003 . Phys. Rev. B , 68 : 024418
- Zvyagin , AA . 1995 . Phys. Rev. B , 51 : 12579
- Park , S and Lee , K . 1998 . J. Phys. A , 31 : 6569
- Muramoto , N and Takahashi , M . 1999 . J. Phys. Soc. Japan , 68 : 2098
- Frahm , H and Kundu , A . 1999 . J. Phys. C: Cond. Mat. , 11 : L557
- Batchelor , MT and Maslen , M . 2000 . J. Phys. A , 33 : 443
- Batchelor , MT , de Gier , J , Links , J and Maslen , M . 2000 . J. Phys. A , 33 : L97
- Links , J and Foerster , A . 2000 . Phys. Rev. B , 62 : 65
- Foerster , A , Hibberd , KE , Links , JR and Roditi , I . 2001 . J. Phys. A , 34 : L25
- Ambjorn , J , Arnaudon , D , Sedrakyan , A , Sedrakyan , T and Sorba , P . 2001 . J. Phys. A , 34 : 5887
- Albeverio , S and Fei , S-M . 2001 . J. Phys. A , 34 : 6545
- Zvyagin , AA . 2001 . J. Phys. A , 34 : R21
- Tonel , AP , Foerster , A , Links , J and Malvezzi , AL . 2001 . Phys. Rev. B , 64 : 054420
- Tonel , AP , Foerster , A , Guan , X-W and Links , J . 2003 . J. Phys. A , 36 : 359
- Gritsev , V and Baeriswyl , D . 2003 . J. Phys. A , 36 : 12129
- Arnaudon , D , Sedrakyan , A and Sedrakyan , T . 2004 . Int. J. Mod. Phys. A , 19 : 16
- Arnaudon , D , Sedrakyan , A and Sedrakyan , T . 2004 . Nucl. Phys. B , 676 : 615
- Batchelor , MT , Guan , X-W , Foerster , A and Zhou , H-Q . 2003 . New J. Phys. , 5 : 107
- Batchelor , MT , Guan , X-W , Foerster , A , Tonel , AP and Zhou , H-Q . 2003 . Nucl. Phys. B , 669 : 385
- Mila , F and Zhang , FC . 2000 . Eur. Phys. J. B , 16 : 7
- Yang , CN and Yang , CP . 1969 . J. Math. Phys. , 10 : 1115
- Takahashi , M . 1971 . Prog. Theor. Phys. , 46 : 401
- Destri , C and de Vega , HJ . 1995 . Nucl. Phys. B , 438 : 413
- Takahashi , M . 1972 . Prog. Theor. Phys. , 47 : 69
- Essler , FHL , Frahm , H , Gömann , F , Klümper , A and Korepin , VE . 2005 . The One-Dimensional Hubbard Model , Cambridge : Cambridge University Press .
- Schlottmann , P . 1986 . Phys. Rev. B , 33 : 4880
- Schlottmann , P . 1997 . Int. J. Mod. Phys. B , 11 : 355
- Essler , FHL and Korepin , VE . 1992 . Phys. Rev. B , 46 : 9147
- Foerster , A and Karowski , M . 1993 . Nucl. Phys. B , 396 : 611
- Tsvelik , AM and Wiegmann , PB . 1983 . Adv. Phys. , 32 : 453
- Shiroishi , M and Takahashi , M . 2002 . Phys. Rev. Lett. , 89 : 117201
- Tsuboi , Z . 2002 . Phys. Lett. B , 544 : 222
- Tsuboi , Z . 2003 . J. Phys. A , 36 : 1493
- Rojas , O , de and , SM and Thomaz , MT . 2002 . J. Math. Phys. , 43 : 1390
- Bühler , A , Elstner , N and Uhrig , GS . 2000 . Eur. Phys. J B , 16 : 475
- Suzuki , M . 1985 . Phys. Rev. B , 31 : 2957
- Klümper , A . 1992 . Ann. Physik , 1 : 540
- Jüttner , G , Klümper , A and Suzuki , J . 1997 . Nucl. Phys. B , 487 : 650
- Klümper , A. Z . 1993 . Phys. B , 91 : 507
- Suzuki , M and Inoue , M . 1987 . Prog. Theor. Phys. , 78 : 787
- Koma , T . 1987 . Prog. Theor. Phys. , 78 : 1213
- Suzuki , J , Akutsu , Y and Wadati , M . 1990 . J. Phys. Soc. Jpn. , 59 : 2667
- Jüttner , G , Klümper , A and Suzuki , J . 1998 . Nucl. Phys. B , 522 : 471
- Fujii , A and Klümper , A . 1999 . Nucl. Phys. B , 546 : 751
- Klümper , A . 2004 . Lect. Notes Phys. , 645 : 349
- Kuniba , A , Nakanishi , T and Suzuki , J . 1994 . Int. J. Mod. Phys. A , 9 : 5215
- Kuniba , A , Nakanishi , T and Suzuki , J . 1994 . Int. J. Mod. Phys. A , 9 : 5267
- Kirillov , AN and Reshetikhin , N.Yu. 1987 . J. Phys. A , 20 : 1565
- Tsuboi , Z . 2004 . J. Phys. A , 37 : 1747
- Tsuboi , Z and Takahashi , M . 2005 . J. Phys. Soc. Japan , 74 : 898
- Tsuboi , Z . 2006 . Nucl. Phys. B , 737 : 261
- Batchelor , MT , Guan , X-W , Oelkers , N and Ying , Z-J . 2004 . J. Stat. Phys. , 116 : 571
- Ying , Z-J , Roditi , I , Foerster , A and Chen , B . 2004 . Eur. Phys. J. B , 41 : 67
- Ying , Z-J , Roditi , I and Zhou , H-Q . 2004 . arXiv:cond-mat/0405274 ,
- Batchelor , MT , Guan , X-W and Oelkers , N . 2004 . Phys. Rev. B , 70 : 184408
- Batchelor , MT , Guan , X-W , Oelkers , N and Foerster , A . 2004 . J. Stat. Mech. P10017 ,
- Feher , A , Orendáč , M , Orendáčová , A and Čižmár , E . 2002 . Low Temp. Phys. , 28 : 551
- Orendáč , M , Orendáčová , A , Cernák , J , Feher , A , Signore , PJC , Meisel , MW , Merah , S and Verdaguer , M . 1995 . Phys. Rev. B , 52 : 3435
- Ying , Z-J , Foerster , A , Guan , X-W , Chen , B and Roditi , I . 2004 . Eur. Phys. J. B , 38 : 535
- Ying , Z-J , Guan , X-W , Foerster , A , Roditi , I and Chen , B . 2003 . arXiv:cond-mat/0309718 ,
- Katoh , K , Hosokoshi , Y and Inoue , K . 2000 . J. Phys. Soc. Japan , 69 : 1008
- Hosokoshi , Y , Katoh , K , Markosyan , AS and Inoue , K . 2001 . Synthetic Metals , 121 : 1838
- Honda , Z , Nonomura , Y and Katsumata , K . 1997 . J. Phys. Soc. Japan , 66 : 3689
- Zheng , W , Singh , RRP and Oitmaa , J . 1997 . Phys. Rev. B , 55 : 8052
- Wang , X and Yu , L . 2000 . Phys. Rev. Lett. , 84 : 5399
- Hagiwara , M , Katori , HA , Schollwöck , U and Mikeska , H-J . 2000 . Phys. Rev. B , 62 : 1051
- Bhaseen , MJ and Tsvelik , AM . 2003 . Phys. Rev. B , 68 : 094405
- Senechal , D . 1995 . Phys. Rev. B , 52 : 15319
- Sierra , G . 1996 . J. Math. Phys. , 29 : 3299
- Sierra , G . 1997 . Lecture Notes in Physics , 478 : 137
- Affleck , I . 1989 . J. Phys. Condens. Matter. , 1 : 3047
- Li , YQ , Ma , M , Shi , DN and Zhang , FC . 1998 . Phys. Rev. Lett. , 81 : 3527
- Gu , SJ and Li , YQ . 2002 . Phys. Rev. B , 66 : 092404
- Gu , SJ , Li , YQ and Zhou , H.-Q . 2004 . Phys. Rev. B , 69 : 144405
- Babujian , HM . 1983 . Nucl. Phys. B , 215 : 317
- Kirillov , AN . 1987 . J. Sov. Math. , 36 : 115
- Roos , BW . 1969 . Analytic Functions and Distributions in Physics and Engineering , London : John Wiley & Sons .
- Klümper , A , Wehner , T and Zittartz , J . 1997 . J. Phys. A , 30 : 1897
- Kulish , PP , Reshetikhin , N.Yu. and Sklyanin , EK . 1981 . Lett. Math. Phys. , 5 : 393
- Bazhanov , VV and Reshetikhin , N . 1990 . J. Phys. A , 23 : 1477
- Takahashi , M . 2001 . Physics and Combinatorics , Edited by: Kirillov , AN and Liskova , N . 299 Singapore : World Scientific .
- Takahashi , M , Shiroishi , M and Klümper , A . 2001 . J. Phys. A , 34 : L187
- Kato , G and Wadati , M . 2002 . J. Math. Phys. , 43 : 5060
- Kirillov , AN . 1989 . J. Sov. Math. , 47 : 2450
- Kirillov , AN and Reshetikhin , N.Yu. 1990 . J. Sov. Math. , 52 : 3156
- Elstner , N and Singh , RRP . 1998 . Phys. Rev. B , 58 : 11484
- Miyahara , S and Ueda , K . 2003 . J. Phys. Condens. Matter , 15 : R327
- Capponi , S and Poilblanc , D . 2006 . Cond-mat/0612162 ,
- Chiari , B , Piovesana , O , Tarantelli , T and Zanazzi , PF . 1990 . Inorg. Chem. , 29 : 1172
- Mayaffre , H , Hovatiá , M , Berthier , C , Julien , M-H , Ségransan , P , Lévy , L and Piovesana , O . 2000 . Phys. Rev. Lett. , 85 : 4795
- Stone , MB , Chen , Y , Rittner , J , Yardimci , H , Reich , DH , Broholm , C , Ferraris , DV and Lectka , T . 2002 . Phys. Rev. B , 65 : 064423
- Aristov , DN and Kiselev , MN . 2004 . Phys. Rev. B , 70 : 224402
- Chen , S , Wang , L and Wang , Y . 2006 . arXiv:cond-mat/0609269 ,
- Miyahara , S , Becca , F and Mila , F . 2003 . Phys. Rev. B , 68 : 024401
- Sakai , T , Okazaki , N , Okamoto , K , Kindo , K , Narumi , Y , Hosokoshi , Y , Kato , K , Inoue , K and Goto , T . 2003 . Phys. Stat. Sol. b , 236 : 429
- Hagiwara , M , Narumi , Y , Kindo , K , Kohno , M , Nakano , H , Sato , R and Takahashi , M . 2002 . RIKEN Review , 46 : 14
- Sakai , T , Okamoto , K , Okunishi , K , Kindo , K , Narumi , Y , Hosokoshi , Y , Katoh , K , Inoue , K and Goto , T . 2004 . Physica B , 346–347 : 34
- Bao , W , Broholm , C , Aeppli , G , Dai , P , Honig , JM and Metcalf , P . 1997 . Phys. Rev. Lett. , 78 : 507
- Tokura , Y and Nagaosa , N . 2000 . Science , 288 : 462
- Khaliullin , G and Maekawa , S . 2000 . Phys. Rev. Lett. , 85 : 3950
- Mochizuki , M and Imada , M . 2003 . Phys. Rev. Lett. , 91 : 167203
- Khaliullin , G , Horsch , P and Oleś , AM . 2001 . Phys. Rev. Lett. , 86 : 3879
- Yamashita , Y , Shibata , N and Ueda , K . 2000 . Phys. Rev. B , 61 : 4012
- Yamashita , Y , Shibata , N and Ueda , K . 1998 . Phys. Rev. B , 58 : 9114
- Penc , K , Mambrini , M , Fazekas , P and Mila , F . 2003 . Phys. Rev. B , 68 : 012408
- van den Bossche , M , Azaria , P , Lecheminant , P and Mila , F . 2001 . Phys. Rev. Lett. , 86 : 4124
- Itoi , C , Qin , S and Affleck , I . 2000 . Phys. Rev. B , 61 : 6747
- Sirker , J . 2004 . Phys. Rev. B , 69 : 104428
- Frischmuth , B , Mila , F and Troyer , M . 1999 . Phys. Rev. Lett. , 82 : 835
- Kawaguchi , A and Kawakami , N . 2002 . J. Phys. Soc. Jpn. , 71 : 3096
- Oshikawa , M , Yamanaka , M and Affleck , I . 1997 . Phys. Rev. Lett. , 78 : 1984
- Sutherland , B . 2000 . Phys. Rev. B , 62 : 11499
- Sato , M . 2005 . Phys. Rev. B , 71 : 024402
- Hosokoshi , Y , Katoh , K , Markosyan , AS and Inoue , K . 2001 . Sythetic Matals , 121 : 1838
- Sakai , T , Okazaki , N , Okamoto , K , Kindo , K , Narumi , Y , Hosokoshi , Y , Kato , K , Inoue , K and Goto , T . 2003 . Phys. Stat. Sol. b , 236 : 429
- Ohta , H , Kirita , K , Kunimoto , T , Okubo , S , Hosokoshi , Y , Katoh , K , Inoue , K , Ogasahara , A and Miyashita , S . 2002 . J. Phys. Soc. Jpn. , 71 : 2640
- Sakai , T , Okamoto , K , Okunishi , K , Kindo , K , Narumi , Y , Hosokoshi , Y , Katoh , K , Inoue , K and Goto , T . 2004 . Physica B , 346–347 : 34
- Damerau , J and Klümper , A . 2006 . J. Stat. Mech. , P014
- Göhmann , F , Klümper , A and Seel , A . 2005 . J. Phys. A , 38 : 1833
- Göhmann , F , Klümper , A and Seel , A . 2004 . J. Phys. A , 37 : 7625
- Göhmann , F , Klümper , A and Seel , A . 2005 . Physica B , 359 : 807
- Göhmann , F and Seel , A . 2006 . Theor. Math. Phys. , 146 : 119
- Göhmann , F , Hasenclever , NP and Seel , A . 2005 . J. Stat. Mech. P015 ,
- Boos , HE , Göhmann , F , Klümper , A and Suzuki , J . 2006 . J. Stat. Mech. P001 ,
- Tsuboi , Z and Shiroishi , M . 2005 . J. Phys. A , 38 : L363
- Tsuboi , Z . 2007 . Physica A , 377 : 95
- Fukushima , N and Kuramoto , Y . 2002 . J. Phys. Soc. Jpn. , 71 : 1238
- Fukushima , N . 2003 . J. Stat. Phys. , 111 : 1049
- Bloch , I . 2005 . Nature Physics , 1 : 23
- Micheli , A , Brennen , GK and Zoller , P . 2006 . Nature Physics , 2 : 341
- Lewenstein , M , Sanpera , A , Ahufinger , V , Damski , B , Sen De , A and Sen , U . 2007 . Ultracold atomic gases in optical lattices: Mimicking condensed matter physics and beyond . Adv. Phys. , 56 : 243
- Fujimoto , S and Eggert , S . 2004 . Phys. Rev. Lett. , 92 : 037206