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Cosmology Beyond the Analytic Lamppost (CoBALt)

16 juin 2025 à 4 juillet 2025
Institut Pascal
Fuseau horaire Europe/Paris

Responsable de programme

Liste des Contributions

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  1. 25. Presentation of the Institut Pascal, Yves Balkanski
    16/06/2025 10:00
  2. 26. Presentation of the program
    16/06/2025 10:15
  3. 27. Flah presentation of participants
    16/06/2025 10:30
  4. 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,...

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  5. 50. Presentation of the Institut Pascal, Yves Balkanski
    23/06/2025 10:00
  6. 28. Presentation of the week
    23/06/2025 10:15
  7. 29. Flash presentation of new participants
    23/06/2025 10:30
  8. 1. Zhong-Zhi Xianyu
    23/06/2025 11:00
  9. 2. Bowei Zhang
    23/06/2025 14:00
  10. 3. Shuntaro Aoki
    23/06/2025 14:30
  11. 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...

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  12. 43. Arthur Poisson
    23/06/2025 16:00
  13. 5. Fabian Schmidt, Connecting field-level inference with n-point functions
    24/06/2025 09:30
  14. 6. Thomas Flöss
    24/06/2025 10:30
  15. 7. Massimo Pietroni
    24/06/2025 11:30
  16. 60. Antonis Kalogirou
    24/06/2025 12:00
  17. 55. Zachary Slepian
    24/06/2025 14:00
  18. 56. Koki Tokeshi
    24/06/2025 15:00
  19. 9. Guillermo Ballesteros
    25/06/2025 09:30
  20. 10. Jesus Gambin Egea
    25/06/2025 10:30
  21. 11. Jinn-Ouk Gong, Classicality of cosmological perturbations
    25/06/2025 11:30
  22. 30. Alejandro Perez Rodriguez
    25/06/2025 12:00
  23. 41. Sebastian Cespedes
    25/06/2025 14:00
  24. 53. Perseas Christodoulidis
    25/06/2025 14:30
  25. 13. Giovanni Tambalo, Inflation Beyond Perturbation Theory
    26/06/2025 09:30
  26. 14. Siméon Vareilles, Cosmological Perturbations: A Wheeler–DeWitt Quantum-Gravity Perspective
    26/06/2025 10:30
  27. 34. Shi Pi
    26/06/2025 11:30
  28. 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...

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  29. 12. Colloquium, Ben Wandelt
    26/06/2025 14:00
  30. 15. Diederik Roest
    27/06/2025 09:30
  31. 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...

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  32. 17. Yurino Mizuguchi
    27/06/2025 11:30
  33. 18. Olli Väisänen
    27/06/2025 12:00
  34. 31. Presentation of the week and flash presentation of new participants
    30/06/2025 10:00
  35. 22. Jens Jasche
    30/06/2025 10:30
  36. 59. Emanuele Fondi
    30/06/2025 11:30
  37. 36. Hugo Simon
    30/06/2025 12:00
  38. 35. Francis Bernardeau, Large Deviation Principle in Large-scale structure cosmology
    30/06/2025 14:00
  39. 24. Denis Karateev
    01/07/2025 09:30
  40. 40. Harry Goodhew, Geometry of kinematic flow
    01/07/2025 10:30
  41. 42. Zhehan Qin
    01/07/2025 11:30
  42. 54. Dong-Gang Wang
    01/07/2025 12:00
  43. 44. Gonzalo Palma
    01/07/2025 14:00
  44. 45. Lucas Pinol
    01/07/2025 15:00
  45. 19. Enrico Pajer
    02/07/2025 09:30
  46. 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...

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  47. 51. Ana Achúcarro
    02/07/2025 11:30
  48. 52. Luca Santoni, Dissipative Inflation via Scalar Production
    02/07/2025 12:00
  49. 46. Chiara Animali
    03/07/2025 09:30
  50. 47. Pierre Auclair
    03/07/2025 10:00
  51. 49. Eemeli Tomberg
    03/07/2025 10:30
  52. 23. Coffee
  53. 58. Conference dinner
  54. 8. Emanuele Fondi
  55. 37. Emanuele Fondi
  56. 32. Flash presentation of new participants
  57. 21. Harry Goodhew, Geometry of kinematic flow
  58. 48. Koki Tokeshi
  59. 33. Vincent Vennin
  60. 20. Zhehan Qin