2024-11-05 13:54 |
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Renormalization of the primordial inflationary power spectra
/ Pla Garcia, Silvia (speaker) (King's College London)
In this talk, I will explore the effects of renormalization on the amplitude of the inflationary spectra at scales measurable in the cosmic microwave background.
Via a gauge-invariant analysis, I will explain why the standard prediction for the spectra on superhorizon scales is a late-time attractor while they are UV finite at all times. [...]
2024 - 4041.
TH institutes; Looping in the Primordial Universe
External links: Talk details; Event details
In : Looping in the Primordial Universe
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Notice détaillée - Notices similaires
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2024-11-05 13:18 |
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The Born regime of gravitational amplitudes
/ Isabella, Giulia (speaker) (UCLA)
I will discuss 2 -> 2 scattering in the regime where the wavelength of the scattered objects is comparable to the impact parameter but much larger than any Compton wavelength in the QFT. In this regime - which differs from the eikonal - the Feynman diagram expansion organizes itself naturally in terms of a geometric (or Born) series that iterates an effective “quantum mechanical” potential [...]
2024 - 4387.
TH String Theory Seminar
External link: Event details
In : The Born regime of gravitational amplitudes
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Notice détaillée - Notices similaires
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2024-11-05 13:18 |
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Physics of and from the large-scale structure of the Universe
/ Lewandowski, Matthew (speaker)
It is expected that measurements of the large-scale structure of the Universe will soon become our leading sources of fundamental cosmological information. In this talk, I will review some of the major progress, both theoretical and data-oriented, that we have made in understanding the physics of galaxy clustering, as well as what we might hope to learn about new physics (including primordial non-Gaussianities) from these measurements. [...]
2024 - 4457.
TH institutes; Looping in the Primordial Universe
External links: Talk details; Event details
In : Looping in the Primordial Universe
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Notice détaillée - Notices similaires
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2024-11-05 11:54 |
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Stochastic inflation: key insights, latest advances and future directions
/ Animali, Chiara (speaker)
During inflation, quantum vacuum fluctuations are stretched beyond the Hubble radius, modifying the large-scale dynamics of the universe. Although typically negligible in the perturbative regime, this backreaction can become significant in regimes leading to primordial black hole (PBH) formation, where large density fluctuations arise, and which are the standard framework for addressing loop corrections. [...]
2024 - 2974.
TH institutes; Looping in the Primordial Universe
External links: Talk details; Event details
In : Looping in the Primordial Universe
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Notice détaillée - Notices similaires
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2024-11-05 11:53 |
Notice détaillée - Notices similaires
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2024-11-05 11:53 |
Notice détaillée - Notices similaires
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2024-11-05 11:51 |
Notice détaillée - Notices similaires
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2024-11-05 10:05 |
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Physics of and from the large-scale structure of the Universe
/ Lewandowski, Matthew (speaker)
It is expected that measurements of the large-scale structure of the Universe will soon become our leading sources of fundamental cosmological information. In this talk, I will review some of the major progress, both theoretical and data-oriented, that we have made in understanding the physics of galaxy clustering, as well as what we might hope to learn about new physics (including primordial non-Gaussianities) from these measurements. [...]
2024 - 4457.
Theory Colloquia
External link: Event details
In : Physics of and from the large-scale structure of the Universe
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Notice détaillée - Notices similaires
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2024-11-04 13:55 |
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Video Messages
2024 - 433.
Commemorations; Symposium to celebrate Carlo Rubbia's 90th birthday
External links: Talk details; Event details
In : Symposium to celebrate Carlo Rubbia's 90th birthday
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Notice détaillée - Notices similaires
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2024-11-04 13:55 |
Notice détaillée - Notices similaires
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