English

The Hodge Laplacian operator on 1-forms on $\mathbb{H}$ and 1-form $E_\mathfrak{a}^1$

Number Theory 2023-07-25 v1

Abstract

As is well known, we can average the eigenfunction ysy^s of the hyperbolic Laplacian on the hyperbolic plane by Γ\Gamma a lattice in SL(2,R)\mathbf{SL}(2,\mathbb{R}) to obtain an automorphic form, the non-holomorphic Eisenstein series Ea(z,s)E_\mathfrak{a} (z,s). In this note, we choose a particular eigenfunction ysdxy^s dx of the Hodge-Laplace operator for 1-forms on the hyperbolic plane. Then, we average by Γ\Gamma to define a 1-form Ea1((z,v),s)E_\mathfrak{a}^1 \big( (z,v), s \big). We see that Ea1E_\mathfrak{a}^1 admits a Fourier expansion and calculates the corresponding coefficients. Also, we evaluate the integral γEa1\int_{\gamma} E_\mathfrak{a}^1 for when γ\gamma is a lifting of horocycles and closed geodesics in the unit tangent bundle. Finally, we will obtain an analog to the Rankin-Selberg method for Ea1E_\mathfrak{a}^1.

Keywords

Cite

@article{arxiv.2307.12209,
  title  = {The Hodge Laplacian operator on 1-forms on $\mathbb{H}$ and 1-form $E_\mathfrak{a}^1$},
  author = {Otto Romero},
  journal= {arXiv preprint arXiv:2307.12209},
  year   = {2023}
}

Comments

14 pages

R2 v1 2026-06-28T11:37:50.881Z