This is the second of a series of papers dealing with an analog in Arakelov geometry of the holomorphic Lefschetz fixed point formula. We use the main result of the first paper to prove a residue formula "à la Bott" for arithmetic characteristic classes living on arithmetic varieties acted upon by a diagonalisable torus; recent results of Bismut- Goette on the equivariant (Ray-Singer) analytic torsion play a key role in the proof.

Let $(𝒪,\sum ,F_{\infty })$ be an arithmetic ring of Krull dimension at most $1,S=\text{Spec}\left(𝒪\right)$ and $(𝒳\to S;{\sigma }_1,...,{\sigma }_n)$ a pointed stable curve. Write $𝒰=𝒳\setminus {\cup }_j{\sigma }_j\left(S\right)$. For every integer $k>0$, the invertible sheaf ${\omega }_{𝒳/S}^{k+1}(k{\sigma }_1+...+k{\sigma }_n)$ inherits a singular hermitian structure from the hyperbolic metric on the Riemann surface ${𝒰}_{\infty }$. In this article we define a Quillen type metric ${∥·∥}_Q$ on the determinant line ${\lambda }_{k+1}=\lambda {\omega }_{𝒳/S}^{k+1}$$(k...$

We prove an analog in Arakelov geometry of the Grothendieck-Riemann-Roch theorem.

We propose a definition for analytic torsion of the contact complex on contact manifolds. We show it coincides with Ray–Singer torsion on any $3$-dimensional CR Seifert manifold equipped with a unitary representation. In this particular case we compute it and relate it to dynamical properties of the Reeb flow. In fact the whole spectral torsion function we consider may be interpreted on CR Seifert manifolds as a purely dynamical function through Selberg-like trace formulae, that hold also in variable...

The refined analytic torsion associated to a flat vector bundle over a closed odd-dimensional manifold canonically defines a quadratic form $\tau$ on the determinant line of the cohomology. Both $\tau$ and the Burghelea-Haller torsion are refinements of the Ray-Singer torsion. We show that whenever the Burghelea-Haller torsion is defined it is equal to $\pm \tau$. As an application we obtain new results about the Burghelea-Haller torsion. In particular, we prove a weak version of the Burghelea-Haller conjecture relating...

Nous donnons ici deux résultats sur le déterminant $\zeta$-régularisé ${det}_{\zeta }A$ d’un opérateur de Schrödinger $A={\Delta }_g+V$ sur une variété compacte $ℳ$. Nous construisons, pour $ℳ=S^1\times S^1$, une suite $(G_n,{\rho }_n,{\Delta }_n)$ où $G_n$ est un graphe fini qui se plonge dans $ℳ$ via ${\rho }_n$ de telle manière que ${\rho }_n\left(G_n\right)$ soit une triangulation de $ℳ$ et où ${\Delta }_n$ est un laplacien discret sur $G_n$ tel que pour tout potentiel $V$ sur $ℳ$, la suite de réels $det({\Delta }_n+V)$ converge après renormalisation vers ${det}_{\zeta }({\Delta }_g+V)$. Enfin, nous donnons sur toute variété riemannienne compacte $(ℳ,g)$ de dimension inférieure ou égale à $3$...

In this paper we extend the holomorphic analytic torsion classes of Bismut and Köhler to arbitrary projective morphisms between smooth algebraic complex varieties. To this end, we propose an axiomatic definition and give a classification of the theories of generalized holomorphic analytic torsion classes for projective morphisms. The extension of the holomorphic analytic torsion classes of Bismut and Köhler is obtained as the theory of generalized analytic torsion classes associated to $–R=2$, $R$ being...