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Three Advanced Lectures on Inflation
Martin S. Sloth
Lecture notes on inflation. The lectures are three double lectures, held for the first time at the Nordita Winter School 2024 - Particle Physics and Cosmology, covering an advanced…
Soft gravitons as Goldstone modes of spontaneously broken asymptotic symmetries in de Sitter spacetimes
Martin S. Sloth
I demonstrate that soft graviton modes in de Sitter spacetimes are the Goldstone modes of the spontaneously broken asymptotic symmetry group of de Sitter space. I then show that an…
On the primordial correlation of gravitons with gauge fields
Rajeev Kumar Jain, P. Jishnu Sai, Martin S. Sloth
We calculate the primordial correlation of gravitons with an abelian gauge field non-minimally coupled through a dynamical dilaton field or a volume moduli during inflation in the…
Gravitational Absorption Lines
Andrea Palessandro, Martin S. Sloth
We consider the gravitational analogue of Lyman-alpha absorption lines in astronomical spectroscopy. If Einstein gravity with minimally coupled matter is valid up to the Planck sca…
Is Patience a Virtue? Cosmic Censorship of Infrared Effects in de Sitter
Ricardo Z. Ferreira, McCullen Sandora, Martin S. Sloth
While the accumulation of long wavelength modes during inflation wreaks havoc on the large scale structure of spacetime, the question of even observability of their presence by any…
Patient Observers and Non-perturbative Infrared Dynamics in Inflation
Ricardo Z. Ferreira, McCullen Sandora, Martin S. Sloth
We have previously derived the effect of soft graviton modes on the quantum state of de Sitter using spontaneously broken asymptotic symmetries. In the present paper we reinterpret…