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The Cosmological Constant [PDF]

String Phenomenology, 2002
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.Comment: Lecture given at
Ellwanger, U.
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The Cosmological Constant [PDF]

Annual Review of Astronomy and Astrophysics, 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
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Hiding the cosmological constant [PDF]

Physical Review Letters, 2019
Perhaps standard effective field theory arguments are right, and vacuum fluctuations really do generate a huge cosmological constant. I show that if one does not assume homogeneity and an arrow of time at the Planck scale, a very large class of general ...
Carlip, S.
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Mirror QCD and Cosmological Constant

Universe, 2017
An analog of Quantum Chromo Dynamics (QCD) sector known as mirror QCD (mQCD) can affect the cosmological evolution due to a non-trivial contribution to the Cosmological Constant analogous to that induced by the ground state in non-perturbative QCD.
Roman Pasechnik, George Prokhorov, Oleg Teryaev   +2 more
doaj   +4 more sources

Cosmological constant: Relaxation vs multiverse

Physics Letters B, 2019
We consider a scalar field with a bottom-less potential, such as g3ϕ, finding that cosmologies unavoidably end up with a crunch, late enough to be compatible with observations if g≲1.2H02/3MPl1/3. If rebounces avoid singularities, the multiverse acquires
Alessandro Strumia, Daniele Teresi
doaj   +3 more sources

Proposal for a Constant Cosmological Constant [PDF]

Physics Letters B, 2000
It is proposed that the apparent positive acceleration of the cosmological scale factor is due to the vacuum energy of an incomplete chiral phase transition in a hidden SU(2) sector.
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
Jejjala, Vishnu, Leigh, Robert G., Minic, Djordje   +2 more
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MeV Dark Energy Emission from a De Sitter Universe

Universe, 2023
The evolution of a de Sitter Universe is the basis for both the accelerated Universe and the late-stationary Universe. So, how do we differentiate between both universes?
Yasmín B. Alcántara-Pérez, Miguel. A. García-Aspeitia, Humberto Martínez-Huerta, Alberto Hernández-Almada   +3 more
doaj   +1 more source

Solar System-scale Interferometry on Fast Radio Bursts Could Measure Cosmic Distances with Subpercent Precision

The Astrophysical Journal Letters, 2023
The light from an extragalactic source at a distance d will arrive at detectors separated by 100 au at times that differ by as much as 120( d /100 Mpc) ^−1 nanoseconds because of the curvature of the wave front. At gigahertz frequencies, the arrival time
Kyle Boone, Matthew McQuinn
doaj   +1 more source

Vacuum energy with mass generation and Higgs bosons

Physics Letters B, 2020
We discuss the Higgs mass and cosmological constant hierarchy puzzles with emphasis on the interplay of Poincaré invariance, mass generation and renormalization group invariance.
Steven D. Bass, Janina Krzysiak
doaj   +1 more source