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@article{49243, author = {Engliš, Miroslav and Zhang, Genkai}, article_location = {Berlin (Germany)}, article_number = {February}, doi = {http://dx.doi.org/10.25537/dm.2020v25.189-217}, keywords = {Bergman space; bundle of Bergman spaces; Fock space; Fock bundle; Siegel domain; Chern connection and curvature; Toeplitz operator}, language = {eng}, issn = {1431-0643}, journal = {Documenta Mathematica}, title = {Connection and curvature on bundles on Bergman and Hardy spaces}, url = {https://www.elibm.org/article/10012026}, volume = {25}, year = {2020} }
TY - JOUR ID - 49243 AU - Engliš, Miroslav - Zhang, Genkai PY - 2020 TI - Connection and curvature on bundles on Bergman and Hardy spaces JF - Documenta Mathematica VL - 25 IS - February SP - 189-217 EP - 189-217 PB - Deutsche Mathematiker-Vereinigung e.V. SN - 14310643 KW - Bergman space KW - bundle of Bergman spaces KW - Fock space KW - Fock bundle KW - Siegel domain KW - Chern connection and curvature KW - Toeplitz operator UR - https://www.elibm.org/article/10012026 N2 - We consider a complex domain D x V in the space C-m x C-n and a family of weighted Bergman spaces on V defined by a weight e(-k phi(z , w)) for a pluri-subharmonic function phi(z, w) with a quantization parameter k. The weighted Bergman spaces define an infinite dimensional Hermitian vector bundle over the domain D. We consider the natural covariant differentiation del(z) on the sections, namely the unitary Chern connections preserving the Bergman norm. We prove a Dixmier trace formula for the curvature of the unitary connection and we find the asymptotic expansion for the curvatures R-(k)(Z,Z) for large k and for the induced connection [del((k))(Z), T-f((k))] on Toeplitz operators T-f. In the special case when the domain D is the Siegel domain and the weighted Bergman spaces are the Fock spaces we find the exact formula for [del((k))(Z), T-f((k))] as Toeplitz operators. This generalizes earlier work of J.E. Andersen in Comm. Math. Phys. 255 (2005), 727-745. Finally, we also determine the formulas for the curvature and for the induced connection in the general case of D x V replaced by a general strictly pseudoconvex domain V subset of C-m x C-n fibered over a domain D subset of C-m. The case when the Bergman space is replaced by the Hardy space on the boundary of the domain is likewise discussed. ER -
ENGLIŠ, Miroslav a Genkai ZHANG. Connection and curvature on bundles on Bergman and Hardy spaces. \textit{Documenta Mathematica}. Berlin (Germany): Deutsche Mathematiker-Vereinigung e.V., 2020, roč.~25, February, s.~189-217. ISSN~1431-0643. doi:10.25537/dm.2020v25.189-217.
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