Results 101 to 110 of about 416,864 (290)

Cosmological constraints on Higgs-dilaton inflation [PDF]

Physical Review D, 2016
21 pages, 7 figures, changes match published ...
Trashorras, Manuel, Nesseris, Savvas, Garcia-Bellido, Juan   +2 more
openaire   +2 more sources

Observational Exclusion of a Consistent Quantum Cosmology Scenario

, 2015
It is often argued that inflation erases all the information about what took place before it started. Quantum gravity, relevant in the Planck era, seems therefore mostly impossible to probe with cosmological observations.
Barrau, Aurelien, Bolliet, Boris, Grain, Julien, Schander, Susanne   +3 more
core   +3 more sources

Inflationary Cosmology: Theory and Phenomenology [PDF]

, 2001
This article gives a brief overview of some of the theory behind the inflationary cosmology, and discusses prospects for constraining inflation using observations.
, Albrecht A, Andrew R Liddle, Brandenberger R, Bunn E F, Efstathiou G, Frieman J, Gott J R, Kallosh R, Khoury J, Lahav O, Lasenby A, Liddle A R, Netterfield C B, Schmidt B P, Turok N, Vilenkin A, Wands D, Wang X   +18 more
core   +2 more sources

When Rituals Fail: Rationalization, Bayesianism, and Predictive Processing

Evolutionary Anthropology: Issues, News, and Reviews, Volume 34, Issue 4, December 2025.
ABSTRACT Why do rituals persist in human societies despite their frequent and observable failures to produce intended outcomes? This paper advances a two‐part argument to explain this resilience. First, at the individual level, I argue that belief in ritual efficacy is maintained through Bayesian‐rational processes, where the invocation of auxiliary ...
Ze Hong
wiley   +1 more source

Duration of inflation and conditions at the bounce as a prediction of effective isotropic loop quantum cosmology [PDF]

, 2013
Loop quantum cosmology with a scalar field is known to be closely linked with an inflationary phase. In this article, we study probabilistic predictions for the duration of slow-roll inflation, by assuming a minimalist massive scalar field as the main ...
L. Linsefors, A. Barrau
semanticscholar   +1 more source

Trans-Planckian censorship and inflationary cosmology [PDF]

Physical Review D, 2019
We study the implications of the recently proposed Trans-Planckian Censorship Conjecture (TCC) for early universe cosmology and in particular inflationary cosmology.
Alek Bedroya, R. Brandenberger, M. Loverde, C. Vafa   +3 more
semanticscholar   +1 more source

Is a loopy and noncommutative early Universe viable?

Physics Letters B, 2023
We conduct a (pre-)inflationary dynamics study of the chaotic quadratic potential within the framework of a simple noncommutative extension of effective loop quantum cosmology put forward recently.
Luis Rey Díaz-Barrón, Abraham Espinoza-García, S. Pérez-Payán, J. Socorro   +3 more
doaj   +1 more source

Lectures on Cosmic Inflation and its Potential Stringy Realizations

, 2007
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.
Acharya B S, Achucarro A, Alabidi L Lyth D H, Allahverdi R, Avgoustidis A Cremades D Quevedo F, Balasubramanian V, Barnaby N, Barnaby N Cline J M, Baumann D Dymarsky A Klebanov I McAllister L Steinhardt P, Baumann D Dymarsky A Klebanov I R Maldacena J McAllister L Murugan A, Baumann D Dymarsky A Klebanov I R McAllister L, Becker K, Berg M, Berg M Haack M Pajer E, Blanco-Pillado J J, Blanco-Pillado J J, Blanco-Pillado J J, Brandenberger R H Nayeri A Patil S P Vafa C, Brax Ph van de Bruck C Davis A C Davis S C Jeannerot R Postma M, Burgess C P, Burgess C P, Burgess C P, Burgess C P, Burgess C P, Burgess C P, Burgess C P, Burgess C P, Burgess C P, Burgess C P, Burgess C P, Burgess C P, Burgess C P Holman R Hoover D, C P Burgess, Chen C M, Chen P, Chen X G, Chen X G, Chen X Tye S H, Chialva D, Cline J M, Conlon J P, Conlon J P, Conlon J P, Conlon J P Quevedo F, Copeland E J, Cremades D, Cremades D, Cremades D, Dasgupta K, Dasgupta K, Dasgupta K Hsu J P Kallosh R Linde A Zagermann M, de Carlos B, Denef F, Denef F Douglas M R Florea B Grassi A Kachru S, Denef F Douglas M R Florea B Grassi A Kachru S, DeWolfe O, Dimopoulos S Kachru S McGreevy J Wacker J G, Dodelson S, Dudas E, Dvali G, Dvali G, Dvali G R Shafi Q Solganik S, Enqvist K Mether L Nurmi S, Firouzjahi H, Freivogel B, Garcia-Bellido J, Gomez-Reino M, Green M B, Greene B Weltman A, Grishchuk L P, Herdeiro C, Hsu J P, Hsu J P, Iizuka N Trivedi S P, Jones N, Kachru S, Kachru S, Kallosh R, Kallosh R, Kallosh R, Kallosh R, Kaloper N, Kaloper N, Kinney W H, Kofman L, Kolb E W, Koyama F Tachikawa Y Watari T, Krause A Pajer E, Lalak Z, Lalak Z Langlois D Pokorski S Turzynski K, Lalak Z Ross G G Sarkar S, Langfelder P, Leblond L, Liddle A R, Linde A, Linde A, Linde A, Linde A, Linde A D, Linde A D, Lyth D H, McAllister L, Mukhanov V, Peebles P J E, Peiris H V Baumann D Friedman B Cooray A, Pilo L, Polarski D, Polchinski J, Polchinski J Efthimiou C Greene B, Postma M, Quevedo F, Ryden B, Saltman A, Shandera S E Tye S H, Simon J Jimenez R Verde L Berglund P Balasubramanian V, Spergel D N, Steinhardt P J, Tasinato G, Terning J, Tye S H H, Villadoro G, Weinberg S, Weinberg S, Westphal A, Westphal A, Zweibach B   +125 more
core   +1 more source

de Sitter Excited State in Heterotic E8×E8${\rm E}_8 \times {\rm E}_8$ Theory

Fortschritte der Physik, Volume 73, Issue 12, December 2025.
Abstract A novel duality sequence is devised to study late‐time cosmology in the heterotic E8×E8${\rm E}_8 \times {\rm E}_8$ setup of Horava and Witten with dynamical walls that are moving towards each other. Remarkably, the dimensionally reduced 4‐dimensional theory does not violate NEC and no bouncing or ekpyrotic phase is observed.
Suddhasattwa Brahma, Keshav Dasgupta, Bohdan Kulinich, Archana Maji, Pichai Ramadevi, Radu Tatar   +5 more
wiley   +1 more source

Effect of inflation on anisotropic cosmologies [PDF]

Physical Review D, 1986
We study the effects of anisotropic cosmologies on inflation. By properly formulating the field equations it is possible to show that any model that undergoes sufficient inflation will become isotropic on scales greater than the horizon today. Furthermore, we shall show that it takes a very long time for anisotropies to become visible in the observable
, Jensen, , Stein-Schabes
openaire   +2 more sources