L2-torsion invariants of a surface bundle over S1

Teruaki Kitano, Takayuki Morifuji, Mitsuhiko Takasawa

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


In the present paper, we introduce L2-torsion invariants τk(k ≥ 1) for surface bundles over the circle and investigate them from the view point of the mapping class group of a surface. It is conjectured that they converge to the L2-torsion for the regular representation of the fundamental group. Further we give an explicit and computable formula of the first two invariants by using the Mahler measure.

Original languageEnglish
Pages (from-to)503-518
Number of pages16
JournalJournal of the Mathematical Society of Japan
Issue number2
Publication statusPublished - 2004
Externally publishedYes


  • Hyperbolic volume
  • L-torsion
  • Nilpotent quotient
  • Surface bundle

ASJC Scopus subject areas

  • General Mathematics


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