212 citations · 801 across the 14 of their papers we have counts for
14 papers
Tensor Catalyzed Decoherence of Primordial Scalar Fluctuations
C. P. Burgess, D. Dineen, R. Holman +1
We provide the first complete calculation of the leading contribution to the decoherence of primordial fluctuations in the scalar part of the metric fluctuations within simplest, s…
Inflationary Decoherence from the Gravitational Floor
C. P. Burgess, R. Holman, Greg Kaplanek
We re-examine the decoherence rate of primordial fluctuations within minimal inflationary models, using only the gravitational interactions required for the underlying fluctuation-…
Does decoherence violate decoupling?
C. P. Burgess, Thomas Colas, R. Holman +1
Recent calculations in both flat and de Sitter spacetimes have highlighted a tension between the decoupling of high-energy physics from low-energy degrees of freedom and the expect…
Cosmic Purity Lost: Perturbative and Resummed Late-Time Inflationary Decoherence
C. P. Burgess, Thomas Colas, R. Holman +2
We compute the rate with which unobserved fields decohere other fields to which they couple, both in flat space and in de Sitter space, for spectator scalar fields prepared in thei…
Duality between the quantum inverted harmonic oscillator and inverse square potentials
Sriram Sundaram, C. P. Burgess, D. H. J. O'Dell
In this paper we show how the quantum mechanics of the inverted harmonic oscillator can be mapped to the quantum mechanics of a particle in a super-critical inverse square potentia…
Minimal decoherence from inflation
C. P. Burgess, R. Holman, Greg Kaplanek +2
We compute the rate with which super-Hubble cosmological fluctuations are decohered during inflation, by their gravitational interactions with unobserved shorter-wavelength scalar…
Quantum Hotspots: Mean Fields, Open EFTs, Nonlocality and Decoherence Near Black Holes
C. P. Burgess, R. Holman, G. Kaplanek
Effective theories describing black hole exteriors resemble open quantum systems inasmuch as many unmeasurable degrees of freedom beyond the horizon interact with those we can see.…
Power-counting during single-field slow-roll inflation
Peter Adshead, C. P. Burgess, R. Holman +1
We elucidate the counting of the relevant small parameters in inflationary perturbation theory. Doing this allows for an explicit delineation of the domain of validity of the semi-…
Open EFTs, IR Effects and Late-Time Resummations: Systematic Corrections in Stochastic Inflation
C. P. Burgess, R. Holman, G. Tasinato
Though simple inflationary models describe the CMB well, their corrections are often plagued by infrared effects that obstruct a reliable calculation of late-time behaviour. We ada…
EFT Beyond the Horizon: Stochastic Inflation and How Primordial Quantum Fluctuations Go Classical
C. P. Burgess, R. Holman, G. Tasinato +1
We identify the effective theory describing inflationary super-Hubble scales and show it to be a special case of effective field theories appropriate to open systems. Open systems…
Who You Gonna Call? Runaway Ghosts, Higher Derivatives and Time-Dependence in EFTs
C. P. Burgess, M. Williams
We briefly review the formulation of effective field theories (EFTs) in time-dependent situations, with particular attention paid to their domain of validity. Our main interest is…
Breakdown of Semiclassical Methods in de Sitter Space
C. P. Burgess, R. Holman, L. Leblond +1
Massless interacting scalar fields in de Sitter space have long been known to experience large fluctuations over length scales larger than Hubble distances. A similar situation ari…
Super-Hubble de Sitter Fluctuations and the Dynamical RG
C. P. Burgess, L. Leblond, R. Holman +1
Perturbative corrections to correlation functions for interacting theories in de Sitter spacetime often grow secularly with time, due to the properties of fluctuations on super-Hub…
Lectures on Cosmic Inflation and its Potential Stringy Realizations
C. P. Burgess
These notes present a brief introduction to Hot Big Bang cosmology and Cosmic Inflation, together with a selection of some recent attempts to embed inflation into string theory. Th…