# Snowmass White Paper: Cosmology at the Theory Frontier

@inproceedings{Flauger2022SnowmassWP, title={Snowmass White Paper: Cosmology at the Theory Frontier}, author={Raphael Flauger and Victor Gorbenko and Austin Joyce and Liam McAllister and Gary Shiu and E. Silverstein}, year={2022} }

The precision cosmological model describing the origin and expansion history of the universe, with observed structure seeded at the inflationary cosmic horizon, demands completion in the ultraviolet and in the infrared. The dynamics of the cosmic horizon also suggests an associated entropy, again requiring a microphysical theory. Recent years have seen enormous progress in understanding the structure of de Sitter space and inflation in string theory, and of cosmological observables captured by…

## 13 Citations

### Effective field theories of gravity and compact binary dynamics: A Snowmass 2021 whitepaper

- Physics
- 2022

In this whitepaper, I describe modern applications of eﬀective ﬁeld theory (EFT) techniques to classical and quantum gravity, with relevance to problems in astrophysics and cosmology. As in…

### TASI Lectures on Cosmic Signals of Fundamental Physics

- Physics
- 2022

The history of the Universe and the forces that shaped it are encoded in maps of the cosmos. From understanding these maps, we gain insights into nature that are inaccessible by other means.…

### Snowmass White Paper: The Cosmological Bootstrap

- Physics
- 2022

This white paper summarizes recent progress in the cosmological bootstrap, an approach to the study of the statistics of primordial ﬂuctuations from consistency with unitarity, locality and symmetry…

### Probing the initial state of inflation: analytical structure of cosmological correlators

- Physics
- 2022

: We study the analytic structure of in-in correlation functions in a deSitter background. The aim of this study is to probe the initial conditions for inﬂation through the features of correlation…

### Black hole to cosmic horizon microstates in string/M theory: timelike boundaries and internal averaging

- Physics
- 2022

: In this note, we resolve an apparent obstacle to string/M theory realizations of dS observer patch holography, ﬁnding a new role for averaging in quantum gravity. The solvable T ¯ T (+Λ 2 )…

### Snowmass White Paper: String Theory and Particle Physics

- Physics
- 2022

: We review recent developments and outstanding questions regarding connecting the top-down UV complete physical framework of string theory with the observed physics of the Standard Model and beyond…

### Report of the Topical Group on Cosmic Frontier 5 Dark Energy and Cosmic Acceleration: Cosmic Dawn and Before for Snowmass 2021

- Physics
- 2022

This report summarizes the envisioned research activities as gathered from the Snowmass 2021 CF5 working group concerning Dark Energy and Cosmic Acceleration: Cosmic Dawn and Before. The scientific…

### Detection of early-universe gravitational-wave signatures and fundamental physics

- PhysicsGeneral Relativity and Gravitation
- 2022

Detection of a gravitational-wave signal of non-astrophysical origin would be a landmark discovery, potentially providing a significant clue to some of our most basic, big-picture scientific…

### The inheritance of energy conditions: Revisiting no-go theorems in string compactifications

- Computer Science, Physics
- 2022

This work focuses on energy conditions as covariant and background independent consistency requirements in order to classify possible backgrounds coming from low-energy string theory in two steps, and shows how supergravity actions typically obey many relevant energy conditions, under some reasonable assumptions.

### The role of dRGT mass terms in cutoff holography and the Randall--Sundrum II scenario

- Physics
- 2022

We show how the T 2 deformation of large N , holographic conformal field theories arise from coupling them to the quadratic mass term of ghost-free massive gravity. We then show that in a certain…

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