Journal ArticleDOI
Dynamics of dark energy
TLDR
In this article, the authors review the observational evidence for the current accelerated expansion of the universe and present a number of dark energy models in addition to the conventional cosmological constant, paying particular attention to scalar field models such as quintessence, K-essence and tachyon.Abstract:
We review in detail a number of approaches that have been adopted to try and explain the remarkable observation of our accelerating universe. In particular we discuss the arguments for and recent progress made towards understanding the nature of dark energy. We review the observational evidence for the current accelerated expansion of the universe and present a number of dark energy models in addition to the conventional cosmological constant, paying particular attention to scalar field models such as quintessence, K-essence, tachyon, phantom and dilatonic models. The importance of cosmological scaling solutions is emphasized when studying the dynamical system of scalar fields including coupled dark energy. We study the evolution of cosmological perturbations allowing us to confront them with the observation of the Cosmic Microwave Background and Large Scale Structure and demonstrate how it is possible in principle to reconstruct the equation of state of dark energy by also using Supernovae Ia observational data. We also discuss in detail the nature of tracking solutions in cosmology, particle physics and braneworld models of dark energy, the nature of possible future singularities, the effect of higher order curvature terms to avoid a Big Rip singularity, and approaches to modifying gravity which leads to a late-time accelerated expansion without recourse to a new form of dark energy.read more
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Journal ArticleDOI
Dark energy perturbations and cosmic coincidence
TL;DR: In this paper, the authors examined some general properties of the simultaneous set of matter and DE perturbations for a multicomponent DE fluid, and put these properties to the test within the context of a nontrivial model of dynamical DE (the lambda XCDM model).
Journal ArticleDOI
Prospects for Fundamental Physics with LISA
Enrico Barausse,Enrico Barausse,Emanuele Berti,Thomas Hertog,Scott A. Hughes,Philippe Jetzer,Paolo Pani,Thomas P. Sotiriou,Nicola Tamanini,Helvi Witek,Helvi Witek,Kent Yagi,Nicolás Yunes,Nicolás Yunes,Tiziano Abdelsalhin,Ana Achúcarro,K. van Aelst,Niayesh Afshordi,Sarp Akcay,L. Annulli,K. G. Arun,Ismael Ayuso,Vishal Baibhav,Tessa Baker,H. Bantilan,Tiago Barreiro,Cristian Barrera-Hinojosa,Nicola Bartolo,Daniel Baumann,Enis Belgacem,Emilio Bellini,Nicola Bellomo,Ido Ben-Dayan,Iosif Bena,Robert Benkel,E. Bergshoefs,Laura Bernard,Sebastiano Bernuzzi,Daniele Bertacca,M. Besancon,Florian Beutler,F. Beyer,Swetha Bhagwat,Jiri Bicak,Simone Biondini,Sébastien Bize,Diego Blas,Christian G. Boehmer,Klaus J. Boller,Béatrice Bonga,Camille Bonvin,Pasquale Bosso,G. Bozzola,Philippe Brax,Moritz Breitbach,Richard Brito,Marco Bruni,Bernd Brügmann,H. J. Bulten,A. Buonanno,Lior M. Burko,Clare Burrage,Francisco Cabral,Gianluca Calcagni,Chiara Caprini,Alejandro Cárdenas-Avendaño,Marco Celoria,K. Chatziioannou,David F. Chernoff,Katy Clough,Andrew J. Coates,D. Comelli,Geoffrey Compère,Djuna Croon,Djuna Croon,D. Cruces,Giulia Cusin,Charles Dalang,U. Danielsson,Saurya Das,Sayak Datta,J. de Boer,V. De Luca,C. De Rham,Vincent Desjacques,Kyriakos Destounis,F. Di Filippo,A. Dima,Emanuela Dimastrogiovanni,Sam R. Dolan,Daniela D. Doneva,F. Duque,Ruth Durrer,William E. East,Richard Easther,Matthew Elley,John Ellis,Roberto Emparan,Jose María Ezquiaga,Malcolm Fairbairn,Stephen Fairhurst,Hontas Farmer,Matteo Fasiello,Valeria Ferrari,Pedro G. Ferreira,G. Ficarra,Pau Figueras,S. Fisenko,Stefano Foffa,Nicola Franchini,Gabriele Franciolini,Kwinten Fransen,Jörg Frauendiener,Noemi Frusciante,R. Fujita,Jonathan R. Gair,Alexander Ganz,Pedro García,Juan Garcia-Bellido,Jaume Garriga,Remi Geiger,C. Geng,László Á. Gergely,Cristiano Germani,Davide Gerosa,Steven B. Giddings,Eric Gourgoulhon,P. Grandclément,L. Graziani,Leonardo Gualtieri,Daryl Haggard,Sadakazu Haino,R. G. Halburd,Wen-Biao Han,Adam J. Hawken,Aurélien Hees,Ik Siong Heng,Jörg Hennig,Carlos A. R. Herdeiro,Carlos A. R. Herdeiro,Sigbjørn Hervik,J. v. Holten,C. D. Hoyle,Y. Hu,Mark A. Hull,T. Ikeda,Maximiliano Isi,Alexander C. Jenkins,Félix-Louis Julié,E. Kajfasz,C. V. Kalaghatgi,Nemanja Kaloper,Marc Kamionkowski,Vladimir Karas,Shilpa Kastha,Zoltán Keresztes,Lawrence E. Kidder,T. Kimpson,Antoine Klein,Sergei A. Klioner,Kostas D. Kokkotas,H. Kolesova,Shimon Kolkowitz,Joachim Kopp,Kazuya Koyama,N. V. Krishnendu,Juan A. Valiente Kroon,Martin Kunz,Ofer Lahav,Arnaud Landragin,R. N. Lang,C. Le Poncin-Lafitte,José P. S. Lemos,B. Li,Stefano Liberati,Michele Liguori,F. Lin,G. Liu,Francisco S. N. Lobo,Renate Loll,Lucas Lombriser,Geoffrey Lovelace,Rodrigo Panosso Macedo,Eric Madge,Elisa Maggio,Michele Maggiore,Stefania Marassi,Paolo Marcoccia,Charalampos Markakis,W. Martens,K. Martinovic,Carlos Martins,Andrea Maselli,S. Mastrogiovanni,Sabino Matarrese,Andrew Matas,Nick E. Mavromatos,Anupam Mazumdar,P. D. Meerburg,Eugenio Megias,Jack J. Miller,José P. Mimoso,L. Mittnacht,M. M. Montero,Blake Moore,Prado Martín-Moruno,Ilia Musco,Ilia Musco,Hiroyuki Nakano,S. Nampalliwar,Germano Nardini,Alex B. Nielsen,J. Novák,Nelson J. Nunes,Maria Okounkova,Roberto Oliveri,F. Oppizzi,G. Orlando,Naritaka Oshita,George Pappas,Vasileios Paschalidis,Hiranya V. Peiris,Marco Peloso,Scott Perkins,Valeria Pettorino,Igor Pikovski,Luigi Pilo,J. Podolsky,Andrew Pontzen,S. Prabhat,Geraint Pratten,Tomislav Prokopec,M. Prouza,H. Qi,Alvise Raccanelli,Alvise Raccanelli,Arttu Rajantie,Lisa Randall,Guilherme Raposo,Vivien Raymond,S. Renaux-Petel,Angelo Ricciardone,Antonio Riotto,Travis Robson,Diederik Roest,R. Rollo,Shawn Rosofsky,J. J. Ruan,Diego Rubiera-Garcia,Milton Ruiz,Mirabela Rusu,F. Sabatie,Norichika Sago,Mairi Sakellariadou,Ippocratis D. Saltas,Laura Sberna,Bangalore Suryanarayana Sathyaprakash,Mark A. Scheel,Patricia Schmidt,B. Schutz,Pedro Schwaller,Lijing Shao,Stuart L. Shapiro,D. M. Shoemaker,António Alves da Silva,C. Simpson,Carlos F. Sopuerta,Alessandro D. A. M. Spallicci,B. A. Stefanek,Leo C. Stein,Nikolaos Stergioulas,Matthew J. Stott,P. J. Sutton,R. Svarc,Hideyuki Tagoshi,T. Tahamtan,Hiroki Takeda,T. Tanaka,G. Tantilian,Gianmassimo Tasinato,Oliver J. Tattersall,Saul A. Teukolsky,Alexandre Le Tiec,G. Theureau,Mark Trodden,Andrew J. Tolley,A. Toubiana,Dina Traykova,Antonios Tsokaros,Caner Unal,C. S. Unnikrishnan,Elias C. Vagenas,Patrick Valageas,Michele Vallisneri,J. F. J. van den Brand,C. Van Den Broeck,M. van de Meent,Pierre Vanhove,Vijay Varma,John Veitch,Bert Vercnocke,Licia Verde,Daniele Vernieri,Filippo Vernizzi,Rodrigo Vicente,Francesca Vidotto,Matt Visser,Zvonimir Vlah,S. Vretinaris,Sebastian H. Völkel,Q. Wang,Yu-Tong Wang,M. C. Werner,J. Westernacher,Rien van de Weygaert,David L. Wiltshire,Toby Wiseman,Patrick D. Wolf,K. Wu,K. Yamada,Huan Yang,L. Yi,X. Yue,D. Yvon,Miguel Zilhão,Aaron Zimmerman,Miguel Zumalacárregui +326 more
TL;DR: In this article, the future potential of the LISA mission in the area of fundamental physics was further delineated and sharpen the potential of LISA data in a broad range of topics.
Posted ContentDOI
Gravitational waves from inflation
Maria Chiara Guzzetti,Nicola Bartolo,Nicola Bartolo,Michele Liguori,Michele Liguori,Sabino Matarrese +5 more
TL;DR: In this paper, the authors review the main mechanisms of gravitational-wave production, ranging from quantum fluctuations of the gravitational field to other mechanisms that can take place during or after inflation, and discuss the discriminating power among different models, associated with the validity/violation of the standard consistency relation between tensor-to-scalar ratio and tensor spectral index.
Journal ArticleDOI
Observational constraints on generalized Proca theories
TL;DR: In this paper, a model of the late-time cosmic acceleration within the framework of generalized Proca theories is presented, where there exists a de Sitter attractor preceded by the dark energy equation of state, and the authors run the Markov-chain Monte Carlo code to confront the model with the observational data of the cosmic microwave background (CMB), baryon acoustic oscillations, supernovae type Ia, and local measurements of the Hubble expansion rate for the background cosmological solutions.
Journal ArticleDOI
Hubble expansion and structure formation in the "running FLRW model" of the cosmic evolution
TL;DR: In this article, a new class of FLRW cosmological models with time-evolving fundamental parameters was proposed, based on a description of the expansion of the universe based on the first principles of quantum field theory and string theory.
References
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Journal ArticleDOI
Measurements of Omega and Lambda from 42 High-Redshift Supernovae
Saul Perlmutter,Saul Perlmutter,Greg Aldering,Gerson Goldhaber,Gerson Goldhaber,R. A. Knop,Peter Nugent,P. G. Castro,P. G. Castro,Susana E. Deustua,Sebastien Fabbro,Sebastien Fabbro,A. Goobar,A. Goobar,Donald E. Groom,I. M. Hook,I. M. Hook,A. G. Kim,A. G. Kim,A. G. Kim,M. Y. Kim,Julia C. Lee,Julia C. Lee,Nelson J. Nunes,Nelson J. Nunes,Reynald Pain,Reynald Pain,C. R. Pennypacker,C. R. Pennypacker,Robert Quimby,Christopher Lidman,Richard S. Ellis,Mike Irwin,Richard G. McMahon,Pilar Ruiz-Lapuente,Nicholas A. Walton,Bradley E. Schaefer,B. J. Boyle,Alexei V. Filippenko,Thomas Matheson,A. S. Fruchter,Nino Panagia,Nino Panagia,Heidi Jo Newberg,Warrick J. Couch +44 more
TL;DR: In this paper, the mass density, Omega_M, and cosmological-constant energy density of the universe were measured using the analysis of 42 Type Ia supernovae discovered by the Supernova Cosmology project.
Journal ArticleDOI
Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
Adam G. Riess,Alexei V. Filippenko,Peter Challis,Alejandro Clocchiatti,Alan H. Diercks,Peter M. Garnavich,R. L. Gilliland,Craig J. Hogan,Saurabh Jha,Robert P. Kirshner,Bruno Leibundgut,Mark M. Phillips,David J Reiss,Brian P. Schmidt,R. A. Schommer,R. Chris Smith,R. Chris Smith,Jason Spyromilio,Christopher W. Stubbs,Nicholas B. Suntzeff,John L. Tonry +20 more
TL;DR: In this article, the authors used spectral and photometric observations of 10 Type Ia supernovae (SNe Ia) in the redshift range 0.16 " z " 0.62.
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