Motivic Integration and the Cohomology of Non-Archimedean Analytic Spaces

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Autores principales: Revista, Zen, MFC, 10
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Publicado: Zenodo 2026
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author Revista, Zen
MFC, 10
author_facet Revista, Zen
MFC, 10
contents We construct a canonical motivic measure on the category of smooth rigid analytic varieties over a discretely valued field K, taking values in a completion of the Grothendieck ring of varieties extended by rational powers of the Lefschetz motive. By bridging the model-theoretic integration of Hrushovski-Kazhdan with the geometric formalism of Berkovich spaces, we establish a comparison isomorphism between the motivic volume of a bounded semi-algebraic set and the weight-graded pieces of its compactly supported étale cohomology. Furthermore, we analyze the behavior of the motivic zeta function under the tropicalization map, proving a non-archimedean analogue of the Monodromy Conjecture for the analytic Milnor fiber. Our results provide a cohomological interpretation of the motivic volume in terms of the weight filtration on the vanishing cycles sheaf, generalizing the work of Denef and Loeser to the analytic setting.
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spellingShingle Motivic Integration and the Cohomology of Non-Archimedean Analytic Spaces
Revista, Zen
MFC, 10
Motivic Integration
Berkovich Spaces
Non-Archimedean Geometry
Etale Cohomology
Grothendieck Ring of Varieties
We construct a canonical motivic measure on the category of smooth rigid analytic varieties over a discretely valued field K, taking values in a completion of the Grothendieck ring of varieties extended by rational powers of the Lefschetz motive. By bridging the model-theoretic integration of Hrushovski-Kazhdan with the geometric formalism of Berkovich spaces, we establish a comparison isomorphism between the motivic volume of a bounded semi-algebraic set and the weight-graded pieces of its compactly supported étale cohomology. Furthermore, we analyze the behavior of the motivic zeta function under the tropicalization map, proving a non-archimedean analogue of the Monodromy Conjecture for the analytic Milnor fiber. Our results provide a cohomological interpretation of the motivic volume in terms of the weight filtration on the vanishing cycles sheaf, generalizing the work of Denef and Loeser to the analytic setting.
title Motivic Integration and the Cohomology of Non-Archimedean Analytic Spaces
topic Motivic Integration
Berkovich Spaces
Non-Archimedean Geometry
Etale Cohomology
Grothendieck Ring of Varieties
url https://doi.org/10.5281/zenodo.18763366