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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

Cosmology with non-minimal derivative couplings:perturbation analysis and observational constraints [PDF]

, 2013
We perform a combined perturbation and observational investigation of the scenario of non-minimal derivative coupling between a scalar field and curvature.
J. Dent, S. Dutta, E. Saridakis, J. Xia
semanticscholar   +1 more source

Fast likelihood-free cosmology with neural density estimators and active learning [PDF]

Monthly notices of the Royal Astronomical Society, 2019
Likelihood-free inference provides a framework for performing rigorous Bayesian inference using only forward simulations, properly accounting for all physical and observational effects that can be successfully included in the simulations.
Justin Alsing, T. Charnock, S. Feeney, Benjamin Dan Wandelt   +3 more
semanticscholar   +1 more source

Hubble distancing: focusing on distance measurements in cosmology [PDF]

Journal of Cosmology and Astroparticle Physics, 2021
The Hubble-Lemaître tension is currently one of the most important questions in cosmology. Most of the focus so far has been on reconciling the Hubble constant value inferred from detailed cosmic microwave background measurement with that from the local ...
K. L. Greene, F. Cyr-Racine
semanticscholar   +1 more source

Time and Dirac Observables in Friedmann Cosmologies [PDF]

Int.J.Theor.Phys.47:1479-1489,2008, 2008
A cosmological time variable is emerged from the Hamiltonian formulation of Friedmann model to measure the evolution of dynamical observables in the theory. A set of observables has been identified for the theory on the null hypersurfaces that its evolution is with respect to the volume clock introduced by the cosmological time variable.
arxiv   +1 more source

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

Energy Storage and Environmental Justice: A Critical Examination of a Proposed Pumped Hydropower Facility in Goldendale, Washington

Antipode, EarlyView., 2023
Abstract Renewable energy sources such as solar and wind produce electricity intermittently, creating challenges in balancing electricity supply and demand for increasingly renewable‐dominated grids. This is driving efforts to increase energy storage infrastructure, such as pumped hydroelectric power storage (pumped storage).
Alida Cantor, Bethani Turley, Katie Maxfield   +2 more
wiley   +1 more source

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

Observational constraints on self-accelerating cosmology [PDF]

, 2006
The DGP brane-world model provides a simple alternative to the standard LCDM cosmology, with the same number of parameters. There is no dark energy - the late universe self-accelerates due to an infrared modification of gravity.
Maartens, Roy, Majerotto, Elisabetta
core   +2 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