n . The weights defining these Hilbert spaces are radial and subject to a mild smoothness condition. In addition, it is assumed that the weights decay at least as fast as the classical Gaussian weight. The main result of the paper says that a Hankel operator on such a Fock space is bounded if and only if the symbol belongs to a certain BMOA space, defined via the Berezin transform. The latter space coincides with a corresponding Bloch space which is defined by means of the Bergman metric. This characterization of boundedness relies on certain precise estimates for the Bergman kernel and the Bergman metric. Characterizations of compact Hankel operators and Schatten class Hankel operators are also given. In the latter case, results on Carleson measures and Toeplitz operators along with H?rmander’s L 2 estimates for the $\bar{\partial}$ operator are key ingredients in the proof." />
Hankel Operators on Fock Spaces and Related Bergman Kernel Estimates
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  • 作者:Kristian Seip (1)
    El Hassan Youssfi (2)
  • 关键词:Bergman kernel ; Hankel operator ; Fock space ; 47B35 ; 32A36 ; 32A37
  • 刊名:Journal of Geometric Analysis
  • 出版年:2013
  • 出版时间:January 2013
  • 年:2013
  • 卷:23
  • 期:1
  • 页码:170-201
  • 全文大小:431KB
  • 参考文献:1. Bauer, W.: Mean oscillation and Hankel operators on the Segal–Bargmann space. Integral Equ. Oper. Theory 52, 1-5 (2005) 10.1007/s00020-003-1272-6">CrossRef
    2. Bauer, W.: Hilbert-Schmidt Hankel operators on the Segal–Bargmann space. Proc. Am. Math. Soc. 132, 2989-996 (2005) 10.1090/S0002-9939-04-07264-8">CrossRef
    3. Beatrous, F., Li, S.-Y.: Trace ideal criteria for operators of Hankel type. Ill. J. Math. 39, 723-54 (1995)
    4. Békollé, D., Berger, C.A., Coburn, L., Zhu, K.: BMO-in the Bergman metric on bounded symmetric domains. J. Funct. Anal. 93, 310-50 (1990) 10.1016/0022-1236(90)90131-4">CrossRef
    5. Berger, C.A., Coburn, L.: Toeplitz operators on the Segal–Bargmann space. Trans. Am. Math. Soc. 301, 813-29 (1987) 10.1090/S0002-9947-1987-0882716-4">CrossRef
    6. Berger, C.A., Coburn, L., Zhu, K.: Toeplitz Operators and Function Theory in / n-Dimensions. Lecture Notes in Math., vol.?1256. Springer, Berlin (1987)
    7. Berndtsson, B., Charpentier, P.: A Sobolev mapping property of the Bergman kernel. Math. Z. 235, 1-0 (2000) 10.1007/s002090000099">CrossRef
    8. Bommier-Hato, H., Youssfi, E.H.: Hankel operators on weighted Fock spaces. Integral Equ. Oper. Theory 59, 1-7 (2007) 10.1007/s00020-007-1513-1">CrossRef
    9. Bommier-Hato, H., Youssfi, E.H.: Hankel operators and the Stieltjes moment problem. J. Funct. Anal. 258, 978-98 (2010) 10.1016/j.jfa.2009.08.004">CrossRef
    10. Demailly, J.-P.: Estimations / L 2 pour l’opérateur $\bar{\partial }$ d’un fibré vectoriel holomorphe semi-positif au-dessus d’une variété k?hlérienne complète. Ann. Sci. école Norm. Super. 15, 457-11 (1982)
    11. Holland, F., Rochberg, R.: Bergman kernel asymptotics for generalized Fock spaces. J. Anal. Math. 83, 207-42 (2001) 10.1007/BF02790262">CrossRef
    12. Isralowitz, J., Zhu, K.: Toeplitz operators on the Fock space. Integral Equ. Oper. Theory 66, 593-11 (2010) 10.1007/s00020-010-1768-9">CrossRef
    13. Janson, S., Peetre, J., Rochberg, R.: Hankel forms and the Fock space. Rev. Mat. Iberoam. 3, 61-38 (1987) 10.4171/RMI/46">CrossRef
    14. Kriete, T.L., III: Kernel functions and composition operators in weighted Bergman spaces. In: Studies on Composition Operators, Laramie, WY, 1996. Contemp. Math., vol. 213, pp. 73-1. Amer. Math. Soc., Providence (1998) 10.1090/conm/213/02851">CrossRef
    15. Marzo, J., Ortega-Cerdà, J.: Pointwise estimates for the Bergman kernel of the weighted Fock space. J. Geom. Anal. 19, 890-10 (2009) 10.1007/s12220-009-9083-x">CrossRef
    16. Stroethoff, K.: Hankel operators in the Fock space. Mich. Math. J. 39, 3-6 (1992) 10.1307/mmj/1029004449">CrossRef
    17. Xia, J., Zheng, D.: Standard deviation and Schatten class Hankel operators on the Segal–Bargmann space. Indiana Univ. Math. J. 53, 1381-399 (2004) 10.1512/iumj.2004.53.2434">CrossRef
    18. Zhu, K.: Operator Theory in Function Spaces. Marcel Dekker, New York (1990)
    19. Zhu, K.: Schatten class Hankel operators on the Bergman space of the unit ball. Am. J. Math. 113, 147-67 (1991) 10.2307/2374825">CrossRef
  • 作者单位:Kristian Seip (1)
    El Hassan Youssfi (2)

    1. Department of Mathematical Sciences, Norwegian University of Science and Technology (NTNU), 7491, Trondheim, Norway
    2. LATP, U.M.R. C.N.R.S. 6632, CMI, Université de Provence, 39 Rue F-Joliot-Curie, 13453, Marseille Cedex 13, France
  • ISSN:1559-002X
文摘
Hankel operators with anti-holomorphic symbols are studied for a large class of weighted Fock spaces on ?sup class="a-plus-plus"> n . The weights defining these Hilbert spaces are radial and subject to a mild smoothness condition. In addition, it is assumed that the weights decay at least as fast as the classical Gaussian weight. The main result of the paper says that a Hankel operator on such a Fock space is bounded if and only if the symbol belongs to a certain BMOA space, defined via the Berezin transform. The latter space coincides with a corresponding Bloch space which is defined by means of the Bergman metric. This characterization of boundedness relies on certain precise estimates for the Bergman kernel and the Bergman metric. Characterizations of compact Hankel operators and Schatten class Hankel operators are also given. In the latter case, results on Carleson measures and Toeplitz operators along with H?rmander’s L 2 estimates for the $\bar{\partial}$ operator are key ingredients in the proof.

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