Bers isomorphism on the universal Teichmüller curve |
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Authors: | Lee-Peng Teo |
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Institution: | (1) Faculty of Information Technology, Multimedia University, Jalan Multimedia, 63100 Cyberjaya, Selangor, Malaysia |
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Abstract: | We study the Bers isomorphism between the Teichmüller space of the parabolic cyclic group and the universal Teichmüller curve.
We prove that this is a group isomorphism and its derivative map gives a remarkable relation between Fourier coefficients
of cusp forms and Fourier coefficients of vector fields on the unit circle. We generalize the Takhtajan–Zograf metric to the
Teichmüller space of the parabolic cyclic group, and prove that up to a constant, it coincides with the pull back of the Velling–Kirillov
metric defined on the universal Teichmüller curve via the Bers isomorphism.
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Keywords: | Universal Teichmüller curve Teichmüller space Bers isomorphism Velling– Kirillov metric Takhtajan– Zograf metric |
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