Results 31 to 40 of about 89,722 (300)

“Observables” in causal set cosmology [PDF]

Physical Review D, 2003
LaTeX, 1+19 pages, 2 ...
R. S. Garcia, Rafael D. Sorkin, Joe Henson, Graham Brightwell, H. Fay Dowker   +4 more
openaire   +3 more sources

Testing loop quantum cosmology [PDF]

, 2017
Loop quantum cosmology predicts that quantum gravity effects resolve the big-bang singularity and replace it by a cosmic bounce. Furthermore, loop quantum cosmology can also modify the form of primordial cosmological perturbations, for example by ...
Wilson-Ewing, Edward
core   +2 more sources

Limitations of Observational Cosmology [PDF]

International Astronomical Union Colloquium, 1990
AbstractUnlike the usual situation with theoretical physics which is testable in the laboratory, in cosmological theories of the universe one faces the following problems: The observer is part of the system, the universe, and this system cannot be altered to test physical theory.
openaire   +2 more sources

The Cosmological Constant [PDF]

, 2000
This is a review of the physics and cosmology of the cosmological constant. Focusing on recent developments, I present a pedagogical overview of cosmology in the presence of a cosmological constant, observational constraints on its magnitude, and the ...
A Albrecht, A Albrecht, A Dekel, A Dekel, A Einstein, A Goobar, A Kusenko, A Lue, A Masiero, A Melchiorri, A Sandage, A Vilenkin, A Vilenkin, A Vilenkin, A Vilenkin, AA Starobinsky, AD Dolgov, AD Dolgov, AD Lewis, AD Linde, AD Linde, AD Linde, AD Linde, AD Linde, AD Miller, AG Cohen, AG Riess, AG Riess, AG Riess, AH Guth, AN Aguirre, AN Aguirre, AN Aguirre, AR Cooray, AR Cooray, AR Liddle, AR Liddle, AR Liddle, B Ratra, B Ratra, B Ratra, B Zumino, BP Schmidt, C Alcock, C Kolda, C Schmidhuber, C Wetterich, CH Lineweaver, CJ Hogan, CP Burgess, CS Kochanek, CT Hill, D Branch, D Huterer, D Scott, DE Holz, DJ Eisenstein, DJ Eisenstein, DJ Fixsen, DJ Heath, DN Schramm, DN Spergel, E Cremmer, E Witten, E Witten, E Witten, EE Falco, EI Guendelman, EJ Copeland, EJ Guerra, EL Turner, EP Hubble, ET Tomboulis, EW Kolb, F Perrotta, F Perrotta, F Wilczek, G Efstathiou, G Efstathiou, G Efstathiou, G Efstathiou, G Hooft ’t, G Huey, G Jungman, G Jungman, G Moore, GA Tammann, GF Smoot, GN Felder, GW Anderson, H Martel, HB Casimir, HP Nilles, HU Nørgaard-Nielsen, I Antoniadis, I Antoniadis, I Antoniadis, I Hachisu, I Smail, I Waga, I Zlatev, I Zlatev, J García-Bellido, J García-Bellido, J Garriga, J Garriga, J-P Uzan, JA Frieman, JA Frieman, JA Frieman, JA Harvey, JA Newman, JA Peacock, JC Charlton, JD Barrow, JD Cohn, JD Lykken, JD Lykken, JE Carlstrom, JE Felten, JG Bartlett, JG Polchinski, JJ Mohr, JM Overduin, JP Ostriker, JR Bond, JR Bond, JR Gott, JR Mould, JR Primack, JR Primack, JT Simonsen, K Benakli, K Choi, K Coble, K Freese, KR Dienes, KR Dienes, L Amendola, L Hui, L Hui, L Parker, L Parker, L Randall, L Susskind, L Wang, LA Kofman, LA Kofman, LM Krauss, LR Abramo, M Bucher, M Chiba, M Dine, M Dine, M Fukugita, M Fukugita, M Giovannini, M Gogberashvili, M Hamuy, M Kamionkowski, M Tegmark, M Tegmark, M Tegmark, M Visser, M White, M Zaldarriaga, M Özer, M Özer, MB Green, MC Bento, MM Phillips, MS Turner, MS Turner, MS Turner, MS Turner, MS Turner, MS Turner, MT Ressell, N Arkani-Hamed, N Bahcall, N Turok, N Weiss, NA Bahcall, NA Bahcall, NA Bahcall, NA Bahcall, NC Tsamis, NC Tsamis, O Bertolami, O Lahav, P Binetruy, P Binétruy, P Brax, P Hoflich, P Horava, P Kanti, PA Popowski, PG Ferreira, PJ Steinhardt, PJ Steinhardt, PJE Peebles, PJE Peebles, PJE Peebles, PJE Peebles, PM Garnavich, PM Garnavich, PS Drell, R Gambini, R Horvat, R Kantowski, R Ritis de, RA Battye, RA Frewin, RG Carlberg, RG Carlberg, RR Caldwell, RR Caldwell, S Burles, S Coleman, S Dodelson, S Dodelson, S Kachru, S Perlmutter, S Perlmutter, S Perlmutter, S Perlmutter, S Phillips, S Podariu, S Weinberg, S Weinberg, S Weinberg, SA Bludman, SDM White, SE Woosley, SL Bridle, SM Carroll, SM Carroll, SP Martin, SW Hawking, SW Hawking, T Banks, T Banks, T Banks, T Barreiro, T Chiba, T Chiba, T Totani, TD Saini, U-L Pen, V Sahni, V Sahni, V Sahni, VA Rubakov, W Hu, W Hu, W Hu, W Hu, W Hu, W Unruh, WD Garretson, WE Ballinger, WL Freedman, X Wu, Y Fujii, Y Fujii, Y Nomura, Y Wang, YB Zel’dovich, YJ Ng, YN Cheng, Z Kakushadze   +270 more
core   +4 more sources

Towards an Observational Appraisal of String Cosmology

, 2011
We review the current observational status of string cosmology when confronted with experimental datasets. We begin by defining common observational parameters and discuss how they are determined for a given model.
Alabidi L, Arefeva I Y Belov D M Giryavets A A Koshelev A S Medvedev P B, Ashoorioon A Krause A, Babak S Gair J R Petiteau A Sesana A, Barnaby N, Barnaby N, Barnaby N, Baumann D, Berg M, Blanco-Pillado J J, Blanco-Pillado J J, Brandenberger R H, Brandenberger R H, Buchbinder E I, Buchbinder E I, Burgess C P, Burgess C P, Burgess C P, Burgess C P, Chen X, Chen X, Chen X, Cicoli M, Cicoli M, Cicoli M Mazumdar A, Cline J M, Conlon J P, Conlon J P, Conlon J P, Copeland E J, Cremades D, Danielsson U H, Das S, David J Mulryne, Denef F, Dietz A (LIGO Scientific Collaboration, Dimopoulos S, Dutta B, Easson D A, Easther R, Elliston J Mulryne D J Seery D Tavakol R, Firouzjahi H, Firouzjahi H, Flauger R, Fraisse A A, Guy J, Hannestad S, Huston I, John Ward, Kachru S, Khatri R Wandelt B D, Kobayashi T, Kofman L, Komatsu E, Koyama K, Koyama K, Krause A, Lehners J-L, Lidsey J E, Lyth D H, Lyth D H Liddle A R, Maldacena J M, Moniz P V, Palti E, Perlmutter S, Phinney E S, Planck Collaboration, Polchinski J, Polchinski J, Quevedo F, Raeymaekers J, Riess A G, Riess A G, Rigopoulos G I, Seery D, Sen A, Spergel D N, Spergel D N (WMAP Collaboration), Starobinsky A A, Thomas S, Vincent A C   +80 more
core   +1 more source

Cosmology with Peculiar Velocities: Observational Effects [PDF]

, 2016
In this paper we investigate how observational effects could possibly bias cosmological inferences from peculiar velocity measurements. Specifically, we look at how bulk flow measurements are compared with theoretical predictions.
Andersen, Per, Davis, Tamara M., Howlett, Cullan   +2 more
core   +2 more sources

Generalized holographic cosmology: low-redshift observational constraint

Journal of High Energy Physics, 2021
Four-dimensional cosmological models are studied on a boundary of a five-dimensional Anti-de Sitter (AdS 5) black hole with AdS Reissner-Nordström and scalar charged Reissner-Nordström black hole solutions, where we call the former a “Hairless” black ...
Sunly Khimphun, Bum-Hoon Lee, Gansukh Tumurtushaa   +2 more
doaj   +1 more source

The Target-selection Pipeline for the Dark Energy Spectroscopic Instrument

The Astronomical Journal, 2023
In 2021 May, the Dark Energy Spectroscopic Instrument (DESI) began a 5 yr survey of approximately 50 million total extragalactic and Galactic targets. The primary DESI dark-time targets are emission line galaxies, luminous red galaxies, and quasars.
Adam D. Myers, John Moustakas, Stephen Bailey, Benjamin A. Weaver, Andrew P. Cooper, Jaime E. Forero-Romero, Bela Abolfathi, David M. Alexander, David Brooks, Edmond Chaussidon, Chia-Hsun Chuang, Kyle Dawson, Arjun Dey, Biprateep Dey, Govinda Dhungana, Peter Doel, Kevin Fanning, Enrique Gaztañaga, Satya Gontcho A Gontcho, Alma X. Gonzalez-Morales, ChangHoon Hahn, Hiram K. Herrera-Alcantar, Klaus Honscheid, Mustapha Ishak, Tanveer Karim, David Kirkby, Theodore Kisner, Sergey E. Koposov, Anthony Kremin, Ting-Wen Lan, Martin Landriau, Dustin Lang, Michael E. Levi, Christophe Magneville, Lucas Napolitano, Paul Martini, Aaron Meisner, Jeffrey A. Newman, Nathalie Palanque-Delabrouille, Will Percival, Claire Poppett, Francisco Prada, Anand Raichoor, Ashley J. Ross, Edward F. Schlafly, David Schlegel, Michael Schubnell, Ting Tan, Gregory Tarle, Michael J. Wilson, Christophe Yèche, Rongpu Zhou, Zhimin Zhou, Hu Zou   +53 more
doaj   +1 more source

Cross-correlating Dark Sirens and Galaxies: Constraints on H 0 from GWTC-3 of LIGO–Virgo–KAGRA

The Astrophysical Journal
We apply the cross-correlation technique to infer the Hubble constant ( H _0 ) of the Universe using gravitational-wave (GW) sources without electromagnetic counterparts (dark sirens) from the third GW Transient Catalog (GWTC-3) and the photometric ...
Suvodip Mukherjee, Alex Krolewski, Benjamin D. Wandelt, Joseph Silk   +3 more
doaj   +1 more source

‘Turkeys Cannot Vote for Christmas’: Why Epistemic Disobedience in an Anti‐Black World Matters

Australian Journal of Social Issues, EarlyView.
ABSTRACT Never in the history of global coloniality has the idea of epistemic disobedience been as important as in the 21st century. This is not only because the struggle for decolonisation has shifted from physical confrontation between the coloniser and the colonised into a battle of ideas but also because the former has deployed the idea of ...
Morgan Ndlovu
wiley   +1 more source