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Cosmology Beyond the Analytic Lamppost (CoBALt)

June 16, 2025 to July 4, 2025
Institut Pascal
Europe/Paris timezone

Responsable de programme

Contribution List

60 out of 60 displayed
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  1. 25. Presentation of the Institut Pascal, Yves Balkanski
    6/16/25, 10:00 AM
  2. 26. Presentation of the program
    6/16/25, 10:15 AM
  3. 27. Flah presentation of participants
    6/16/25, 10:30 AM
  4. 57. "Le big-bang, un siècle de cosmologie", Public talk in French, Jean-Philippe Uzan,
    6/17/25, 6:00 PM

    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
    6/23/25, 10:00 AM
  6. 28. Presentation of the week
    6/23/25, 10:15 AM
  7. 29. Flash presentation of new participants
    6/23/25, 10:30 AM
  8. 1. Zhong-Zhi Xianyu
    6/23/25, 11:00 AM
  9. 2. Bowei Zhang
    6/23/25, 2:00 PM
  10. 3. Shuntaro Aoki
    6/23/25, 2:30 PM
  11. 4. Flavio Riccardi, Probing de Sitter from the horizon
    6/23/25, 3:00 PM

    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
    6/23/25, 4:00 PM
  13. 5. Fabian Schmidt, Connecting field-level inference with n-point functions
    6/24/25, 9:30 AM
  14. 6. Thomas Flöss
    6/24/25, 10:30 AM
  15. 7. Massimo Pietroni
    6/24/25, 11:30 AM
  16. 60. Antonis Kalogirou
    6/24/25, 12:00 PM
  17. 55. Zachary Slepian
    6/24/25, 2:00 PM
  18. 56. Koki Tokeshi
    6/24/25, 3:00 PM
  19. 9. Guillermo Ballesteros
    6/25/25, 9:30 AM
  20. 10. Jesus Gambin Egea
    6/25/25, 10:30 AM
  21. 11. Jinn-Ouk Gong, Classicality of cosmological perturbations
    6/25/25, 11:30 AM
  22. 30. Alejandro Perez Rodriguez
    6/25/25, 12:00 PM
  23. 41. Sebastian Cespedes
    6/25/25, 2:00 PM
  24. 53. Perseas Christodoulidis
    6/25/25, 2:30 PM
  25. 13. Giovanni Tambalo, Inflation Beyond Perturbation Theory
    6/26/25, 9:30 AM
  26. 14. Siméon Vareilles, Cosmological Perturbations: A Wheeler–DeWitt Quantum-Gravity Perspective
    6/26/25, 10:30 AM
  27. 34. Shi Pi
    6/26/25, 11:30 AM
  28. 38. Laura Iacconi, Mapping inflationary loop corrections to boundary terms
    6/26/25, 12:00 PM

    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
    6/26/25, 2:00 PM
  30. 15. Diederik Roest
    6/27/25, 9:30 AM
  31. 16. Yoann Launay, Stochastic inflation beyond the lamppost with general and numerical relativity
    6/27/25, 10:30 AM

    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
    6/27/25, 11:30 AM
  33. 18. Olli Väisänen
    6/27/25, 12:00 PM
  34. 31. Presentation of the week and flash presentation of new participants
    6/30/25, 10:00 AM
  35. 22. Jens Jasche
    6/30/25, 10:30 AM
  36. 59. Emanuele Fondi
    6/30/25, 11:30 AM
  37. 36. Hugo Simon
    6/30/25, 12:00 PM
  38. 35. Francis Bernardeau, Large Deviation Principle in Large-scale structure cosmology
    6/30/25, 2:00 PM
  39. 24. Denis Karateev
    7/1/25, 9:30 AM
  40. 40. Harry Goodhew, Geometry of kinematic flow
    7/1/25, 10:30 AM
  41. 42. Zhehan Qin
    7/1/25, 11:30 AM
  42. 54. Dong-Gang Wang
    7/1/25, 12:00 PM
  43. 44. Gonzalo Palma
    7/1/25, 2:00 PM
  44. 45. Lucas Pinol
    7/1/25, 3:00 PM
  45. 19. Enrico Pajer
    7/2/25, 9:30 AM
  46. 39. Thomas Colas, The Open Effective Field Theory of Single-Clock Cosmology
    7/2/25, 10:30 AM

    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
    7/2/25, 11:30 AM
  48. 52. Luca Santoni, Dissipative Inflation via Scalar Production
    7/2/25, 12:00 PM
  49. 46. Chiara Animali
    7/3/25, 9:30 AM
  50. 47. Pierre Auclair
    7/3/25, 10:00 AM
  51. 49. Eemeli Tomberg
    7/3/25, 10:30 AM
  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