Work

Holographic spacetime model of inflation and its predictions for the CMB primordial spectra

Year: 2025

Type: article

Abstract: In 1998 Carlip [] and Solodukhin [] independently conjectured the equality between fluctuations in the modular Hamiltonian of black holes and its expectation value. Banks and Zurek’s 2021 work [T. Banks and K. M. Zurek, ] generalized this observation to any causal diamonds. We use this observation to calculate the precise normalization of primordial scalar and tensor power spectra in the holographic space-time model of inflation. In previous work [T. Banks and W. Fischler, .] Banks and Fischler outlined the general calculation of inflationary power spectra in this model, which we review here. Its conceptual basis is radically different from field theoretic inflation and it has no trans-Planckian problem, but its predictions for power spectra will be shown to fit extant data equally well, and the tensor-to-scalar ratio agrees with experimental observations.

Source: Physical review. D/Physical review. D.

DOI: 10.1103/xts8-ggmg

Authors: Sidan A, Tom Banks

Institution: Rutgers, The State University of New Jersey

Language: English

Topic: Cosmology and Gravitation Theories

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Funder: U.S. Department of Energy

Award: RESEARCH IN THEORETICAL HIGH ENERGY PHYSICS