NAmeba

NaMeBa is a joint seminar among the universities of Napoli, Messina and Bari.

The goal of the seminar is to study the Feynman integrals from an algebro-geometric point of view.

The meetings will be held online, on Microsoft Teams. Everybody is welcome to join. If you wish to join, please contact one of the organizers to receive instructions.

program

17/10/2025, 14:00--15:30.
Dino Festi: Introducing Feynman Integrals.
[W] Sections 2.1--2.3
24/10/2025, 14:00--15:30.
Simone Noja: Wick rotation and dimension regularization.
[W] Section 2.4
31/10/2025. 14:00--15:30.
Riccardo Pengo: The Feynman parameter representation.
[W] Sections. 2.5.1--2.5.3
07/11/2025. 14:00--15:30.
Riccardo Pengo et al.: Examples of Symanzik polynomials, and their combinatorics,
[W] Chapter 3, [P] Section 2.1
14/11/2025, 14:00-15:30,
Enrico Russo: Amplitudes and Feynman integrals in physics,
[W] Chapter 4
21/11/2025, 14:00-15:30,
Enrico Russo: Poincaré representation and Feynman rules
[W] Chapter 4
28/11/2025
No seminar
05/12/2025, 14:00-15:30,
Dino Festi: One-loop Feynman integrals.
[W] Chapter 5, [BK]
12/12/2025, 14:00-15:30,
Simone Noja: Singularities of Feynman Integrals.
[W] Section 6.6, [KS], [ACM]
19/12/2025
No seminar
09/01/2026, 14:00-15:30,
Anthony Massidda: Master integrals. (Preview)
16/01/2026, 14:00-15:30,
Anthony Massidda: Master integrals. (Main act)
[W] Section 6.1.
23/01/2026, 14:00-15:30,
Roberta Angius: Intersection Theory for Master Integral decomposition. (Part I)
30/01/2026, 14:00-15:30,
Roberta Angius: Intersection Theory for Master Integral decomposition. (Part II)
06/02/2026
No seminar
13/02/2026
No seminar
20/02/2026, 10:30-12:00 (different time!!!),
Discussion session about the last talks.
27/02/2026
No seminar
06/03/2026, 14:00-15:30,
Riccardo Pengo: Sector decompositions and blow-ups.
[W] Chapter 10, [B] Sections 5-6
13/03/2026, 14:00-15:30,
Riccardo Pengo: Examples of sector decompositions and blow-ups of linear spaces.
[W] Chapter 10, [B] Sections 5-6
20/03/2026.
No seminar
27/03/2026.
TBD: Elliptic Feynman integrals.
[W] Chapter 13, [BV], [BKV]

references

[ACM] Angius, R., Cacciatori, S. L., & Massidda, A. (2025). Wall crossing structure
from quantum phenomena to Feynman Integrals, arXiv preprint

[B] Brown, F. (2017). Feynman amplitudes, coaction principle, and cosmic Galois group.
Communications in Number Theory and Physics, 11(3), 453–556

[BK] Bloch, S., & Kreimer, D. (2010). Feynman amplitudes and Landau singularities for one-loop graphs.
Communications in Number Theory and Physics, 4(4), 709–753.

[BKV] Bloch, S., Kerr, M., & Vanhove, P. (2017). Local mirror symmetry and the sunset Feynman integral.
Advances in Theoretical and Mathematical Physics, 21(6), 1373–1453.

[BV] Bloch, S., & Vanhove, P. (2015). The elliptic dilogarithm for the sunset graph.
Journal of Number Theory, 148, 328–364.

[KS] Kontsevich, M., & Soibelman, Y. (2024). Holomorphic Floer theory I: Exponential integrals
in finite and infinite dimensions, arXiv preprint

[P] Panzer, E. (2015). Feynman integrals and hyperlogarithms. PhD Thesis, Humboldt Universität zu Berlin

[W] Weinzierl, S. (2022). Feynman Integrals: A Comprehensive Treatment for Students and Researchers
First edition, UNITEXT for Physics, Springer International Publishing.

Organizers

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