Cosmology Beyond the Analytic Lamppost (CoBALt)

Liste des Contributions

25. Presentation of the Institut Pascal, Yves Balkanski

16/06/2025 10:00

26. Presentation of the program

16/06/2025 10:15

27. Flah presentation of participants

16/06/2025 10:30

57. "Le big-bang, un siècle de cosmologie", Public talk in French, Jean-Philippe Uzan,

17/06/2025 18:00

Le modèle du Big-bang, cette théorie qui se fixe pour objectif de
décrire l’Univers et son histoire, est un extraordinaire échafaudage qui a
bouleversé notre représentation du cosmos, de l’espace et du temps. Selon
les mots de Georges Lemaître, « une cosmogonie vraiment complète devrait
expliquer les atomes comme les soleils ». Trouvant ses racines dans la
relativité générale d'Einstein,...

50. Presentation of the Institut Pascal, Yves Balkanski

23/06/2025 10:00

28. Presentation of the week

23/06/2025 10:15

29. Flash presentation of new participants

23/06/2025 10:30

1. Zhong-Zhi Xianyu

23/06/2025 11:00

2. Bowei Zhang

23/06/2025 14:00

3. Shuntaro Aoki

23/06/2025 14:30

4. Flavio Riccardi, Probing de Sitter from the horizon

23/06/2025 15:00

In a QFT on de Sitter background, one can study correlators between fields pushed to the future and past horizons of a comoving observer. This is a neat probe of the physics in the observer’s causal diamond (known as the static patch). This setup highlights how the analytic structure of de Sitter correlators encodes a generalized quasinormal spectrum, even in interacting theories, using the...

43. Arthur Poisson

23/06/2025 16:00

5. Fabian Schmidt, Connecting field-level inference with n-point functions

24/06/2025 09:30

6. Thomas Flöss

24/06/2025 10:30

7. Massimo Pietroni

24/06/2025 11:30

60. Antonis Kalogirou

24/06/2025 12:00

55. Zachary Slepian

24/06/2025 14:00

56. Koki Tokeshi

24/06/2025 15:00

9. Guillermo Ballesteros

25/06/2025 09:30

10. Jesus Gambin Egea

25/06/2025 10:30

11. Jinn-Ouk Gong, Classicality of cosmological perturbations

25/06/2025 11:30

30. Alejandro Perez Rodriguez

25/06/2025 12:00

41. Sebastian Cespedes

25/06/2025 14:00

53. Perseas Christodoulidis

25/06/2025 14:30

13. Giovanni Tambalo, Inflation Beyond Perturbation Theory

26/06/2025 09:30

14. Siméon Vareilles, Cosmological Perturbations: A Wheeler–DeWitt Quantum-Gravity Perspective

26/06/2025 10:30

34. Shi Pi

26/06/2025 11:30

38. Laura Iacconi, Mapping inflationary loop corrections to boundary terms

26/06/2025 12:00

Both single- and multi-field models of inflation might lead to enhanced scalar fluctuations on scales much smaller than those seeding the large-scale structure formation. In these scenarios, it is possible that the spike of power at high wavenumber might induce large corrections to the scalar power spectrum, e.g. in the form of loop corrections, potentially endangering the perturbativity of...

12. Colloquium, Ben Wandelt

26/06/2025 14:00

15. Diederik Roest

27/06/2025 09:30

16. Yoann Launay, Stochastic inflation beyond the lamppost with general and numerical relativity

27/06/2025 10:30

The absence of general non-perturbative methods in quantum field theory on curved spacetimes has highlighted the importance of numerical studies in classical regimes. This work presents an overview of our recent advances in solving the equations of general relativity (GR) for inhomogeneous inflation, driven by vacuum quantum fluctuations.
A key contribution of this work is the transition from...

17. Yurino Mizuguchi

27/06/2025 11:30

18. Olli Väisänen

27/06/2025 12:00

31. Presentation of the week and flash presentation of new participants

30/06/2025 10:00

22. Jens Jasche

30/06/2025 10:30

59. Emanuele Fondi

30/06/2025 11:30

36. Hugo Simon

30/06/2025 12:00

35. Francis Bernardeau, Large Deviation Principle in Large-scale structure cosmology

30/06/2025 14:00

24. Denis Karateev

01/07/2025 09:30

40. Harry Goodhew, Geometry of kinematic flow

01/07/2025 10:30

42. Zhehan Qin

01/07/2025 11:30

54. Dong-Gang Wang

01/07/2025 12:00

44. Gonzalo Palma

01/07/2025 14:00

45. Lucas Pinol

01/07/2025 15:00

19. Enrico Pajer

02/07/2025 09:30

39. Thomas Colas, The Open Effective Field Theory of Single-Clock Cosmology

02/07/2025 10:30

Friction and noise naturally emerge when light and gravitational waves propagate through unknown environments. In this talk, I will present recent developments in a systematic effective field theory framework that captures dissipation and noise in a controlled, model-independent way. Building on fundamental principles such as symmetries, locality, and unitarity, I will show how these...

51. Ana Achúcarro

02/07/2025 11:30

52. Luca Santoni, Dissipative Inflation via Scalar Production

02/07/2025 12:00

46. Chiara Animali

03/07/2025 09:30

47. Pierre Auclair

03/07/2025 10:00

49. Eemeli Tomberg

03/07/2025 10:30

23. Coffee

58. Conference dinner

8. Emanuele Fondi

37. Emanuele Fondi

32. Flash presentation of new participants

21. Harry Goodhew, Geometry of kinematic flow

48. Koki Tokeshi

33. Vincent Vennin

20. Zhehan Qin