Results 11 to 20 of about 202,532 (277)

THE COSMOLOGICAL CONSTANT [PDF]

String Phenomenology, 2003
Various contributions to the cosmological constant are discussed and confronted with its recent measurement. We briefly review different scenarious -- and their difficulties -- for a solution of the cosmological constant problem.
Ellwanger, U.
openaire   +4 more sources

Hiding the Cosmological Constant [PDF]

Physical Review Letters, 2019
9+1 pages; v2: better discussion of evolution,m new references, some rewriting for clarity; v3: even better discussion of evolution, added references, minor ...
Carlip, S.
openaire   +5 more sources

The Cosmological Constant [PDF]

Annual Review of Astronomy and Astrophysics, 1992
50 pages.
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
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Proposal for a constant cosmological constant [PDF]

Physics Letters B, 2000
12 pages, LaTeX, 1 figure; minor rewriting, references corrected, results ...
Abbott, Albrecht, Alcock, Appelquist, Berezhiani, Burles, Caldwell, Campbell, Carroll, Chan, Chen, Chodos, Coble, Coleman, Coleman, Cormier, Dodelson, Dolan, Frieman, Frieman, Frieman, Fuller, Guth, Haim Goldberg, Hill, Hill, Iacobson, Iwasaki, Kajantie, Kofman, Kogut, Kogut, Kolda, Linde, Lisi, Mawhinney, Olive, Olive, Paterson, Peebles, Perlmutter, Perlmutter, Perlmutter, Peskin, Pisarski, Pokrovskii, Riess, Sannino, Shiu, Shtanov, Singh, Vafa, Wirstam, Witten, Yamagishi, Zlatev   +55 more
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Deconstructing the Cosmological Constant

, 2003
Deconstruction provides a novel way of dealing with the notoriously difficult ultraviolet problems of four-dimensional gravity. This approach also naturally leads to a new perspective on the holographic principle, tying it to the fundamental requirements of unitarity and diffeomorphism invariance, as well as to a new viewpoint on the cosmological ...
Jejjala, Vishnu, Leigh, Robert G., Minic, Djordje   +2 more
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Homogeneous cosmologies with a cosmological constant [PDF]

Physical Review D, 1999
Spatially homogeneous cosmological models with a positive cosmological constant are investigated, using dynamical systems methods. We focus on the future evolution of these models. In particular, we address the question whether there are models within this class that are de Sitter-like in the future, but are tilted.
Goliath, Martin, Ellis, George F. R.
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Gauge-dependent cosmological  constant  [PDF]

Classical and Quantum Gravity, 2004
When the cosmological constant of spacetime is derived from the 5D induced-matter theory of gravity, we show that a simple gauge transformation changes it to a variable measure of the vacuum which is infinite at the big bang and decays to an astrophysically-acceptable value at late epochs.
Mashhoon, Bahram, Wesson, Paul S.
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Cosmological constant from decoherence [PDF]

Classical and Quantum Gravity, 2011
We address the issue why a cosmological constant (dark energy) possesses a small positive value instead of being zero. Motivated by the cosmic landscape picture, we mimic the dark energy by a scalar field with potential wells and show that other degrees of freedom interacting with it can localize this field by decoherence in one of the wells.
Kiefer, Claus, Queisser, Friedemann, Starobinsky, Alexei A.   +2 more
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Inflation and cosmological constant [PDF]

Physica Scripta, 2021
Abstract In construction of an inflationary model, one usually assumes that the matter sector of the gravitational action is minimally coupled to the background. It means that the matter (inflaton) part of the action is coupled with the same metric of the gravitational part.
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Cosmological constant and time delay [PDF]

, 2008
The effect of the cosmological constant on the time delay caused by an isolated spherical mass is calculated without using the lens equation and compared to a recent observational bound on the time delay of the lensed quasar SDSS J1004+4112.Comment: 8 ...
Einstein, Inada, Kagramanova, Kawano, Kerr, N. Zaimen, Oguri, Ota, Rindler, Schücking, Sharon, T. Schücker   +11 more
core   +3 more sources