scholarly journals Effective field theory during inflation. II. Stochastic dynamics and power spectrum suppression

2016 ◽  
Vol 93 (4) ◽  
Author(s):  
D. Boyanovsky
Keyword(s):  
Field Theory ◽  
Power Spectrum ◽  
Effective Field Theory ◽  
Stochastic Dynamics ◽  
Effective Field

scholarly journals Role of trans-Planckian modes in cosmology

2020 ◽  
Vol 2020 (8) ◽  
Author(s):  
Arjun Berera ◽  
Suddhasattwa Brahma ◽  
Jaime R. Calderón
Keyword(s):  
Field Theory ◽  
Power Spectrum ◽  
Effective Field Theory ◽  
Effective Field ◽  
Inflationary Cosmology ◽  
De Sitter ◽  
Warm Inflation ◽  
Primordial Power Spectrum ◽  
Hubble Horizon

Abstract Motivated by the old trans-Planckian (TP) problem of inflationary cosmology, it has been conjectured that any consistent effective field theory should keep TP modes ‘hidden’ behind the Hubble horizon, so as to prevent them from turning classical and thereby affecting macroscopic observations. In this paper we present two arguments against the Hubble horizon being a scale of singular significance as has been put forward in the TP Censorship Conjecture (TCC). First, refinements of TCC are presented that allow for the TP modes to grow beyond the horizon while still keeping the de-Sitter conjecture valid. Second, we show that TP modes can turn classical even well within the Hubble horizon, which, as such, negates this rationale behind keeping them from crossing it. The role of TP modes is known to be less of a problem in warm inflation, because fluctuations start out usually as classical. This allows warm inflation to be more resilient to the TP problem compared to cold inflation. To understand how robust this is, we identity limits where quantum modes can affect the primordial power spectrum in one specific case.

scholarly journals Blinded challenge for precision cosmology with large-scale structure: Results from effective field theory for the redshift-space galaxy power spectrum

2020 ◽  
Vol 102 (12) ◽  
Author(s):  
Takahiro Nishimichi ◽  
Guido D’Amico ◽  
Mikhail M. Ivanov ◽  
Leonardo Senatore ◽  
Marko Simonović ◽  
...  
Keyword(s):  
Field Theory ◽  
Power Spectrum ◽  
Effective Field Theory ◽  
Large Scale ◽  
Large Scale Structure ◽  
Effective Field ◽  
Scale Structure ◽  
Precision Cosmology

scholarly journals The matter power spectrum in redshift space using effective field theory

2017 ◽  
Vol 2017 (11) ◽  
pp. 039-039 ◽  
Author(s):  
Lucía Fonseca de la Bella ◽  
Donough Regan ◽  
David Seery ◽  
Shaun Hotchkiss
Keyword(s):  
Field Theory ◽  
Power Spectrum ◽  
Effective Field Theory ◽  
Effective Field ◽  
Matter Power Spectrum
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