Virasoro constraints and the Chern classes of the Hodge bundle

May 25, 1998
14 pages
Published in:
  • Nucl.Phys.B 530 (1998) 701-714
  • Published: 1998
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Abstract: (Elsevier)
We analyse the consequences of the Virasoro conjecture of Eguchi, Hori and Xiong for Gromov-Witten invariants, in the case of zero degree maps to the manifolds P 1 and P 2 (or more generally, smooth projective curves and smooth simply connected projective surfaces). We obtain predictions involving intersections of psi and lambda classes on M g,n . In particular, we show that the Virasoro conjecture for P 2 implies the numerical part of Faber's conjecture on the tautological Chow ring of M g .
Note:
  • 12 pages, latex2e
  • Gromov-Witten invariants
  • Virasoro conjecture
  • Topological gravity